KR20030035867A - Device for Switching Sector in Mobile Communication System and Method thereof - Google Patents

Abstract

PURPOSE: An apparatus for changing a variable sector in a mobile communication system and a method thereof are provided to change automatically a sector path of a region that a base station services a mobile terminal such as a cellular phone, a PCS(Personal Communication Assistant) terminal and a GSM(Global System for Mobile Communications) terminal etc. according to a key input of a manager. CONSTITUTION: An alpha sector unit(230), a beta sector unit(240) and a gamma sector unit(250) of a base station device are connected to a variable sector change device(310) through an RF(Radio Frequency) cable(252), respectively. A donor type device(260) is connected to an output terminal of the variable sector change device(310) through the RF cable(252). A key input unit(320) and a state processing unit(330) are connected to the variable sector change device(310). The variable sector change device(310) has a plurality of switches and performs a switch-on or a switch-off according to a key input selection.

Description

Variable sector conversion apparatus for mobile communication system and method thereof {Device for Switching Sector in Mobile Communication System and Method}

The present invention relates to an apparatus and method for converting a variable sector in a mobile communication system. More particularly, the present invention relates to a sector sector of an area serviced by a base station to a mobile terminal such as a cellular phone, a PCS terminal, and a GSM terminal. The present invention relates to a variable sector converting apparatus of a mobile communication system which automatically converts according to key input, and a method thereof.

Hand-off is generally performed in a mobile communication system to switch the call path between the mobile terminal and the base station so that the call can be continuously maintained even if the mobile terminal leaves the service area of the base station or sector currently receiving the service. Say technology Such handoffs include soft handoff, softer handoff, and hard handoff. Soft handoff is when a mobile terminal connects to a new base station and communicates with both base stations at the same time before disconnecting from the current base station. As the signal from the new base station becomes larger than the signal from the current base station, Disconnect. Therefore, since the new base station and channel need to be set up, it takes a lot of time for handoff processing, and since the channel resources of the two base stations are used at the same time, the waste of resources is also severe. Three kinds of handoffs will be described in more detail with reference to FIG. 1.

1 is a cell arrangement diagram when a base station employing three sectors is arranged in a conventional code division multiple access (CDMA) based macrocell system.

In FIG. 1, the three sector base stations 110, 120, and 130 that provide telephone call-related services to the respective mobile terminals may include cell regions 111, 121, and 131 that each base station 110, 120, and 130 are in charge of. Each sector of each of the base stations 110, 120, 130 ( , , ) Has a beam width. Each mobile terminal is located in an area 140, 150, 160, 170 that the base stations 110, 120, 130 are in charge of.

Assuming that the service area is divided into hexagonal cells as shown, each cell is adjacent to up to six other cells. Each mobile terminal is located in one of these cell areas. For example, the mobile terminal 1 located at 150 is a base station 1 (110) Sector and base station 3 (130) The mobile terminal 2 located at 160 at the same time and communicating with the sector is the base station 1 (110) Sector, base station 2 (120) Sector, base station 3 (130) It can communicate with the sector at the same time. Therefore, when the mobile terminal crosses the position of 150, a soft handoff is performed between the base station 1 110 and the base station 3 130, in which case two channel elements are required. In addition, when the mobile terminal crosses the position 160, a soft handoff is made between the base stations 110, 120, and 130, which takes three channel elements. However, in the case of the mobile terminal crossing the position 170, the base station 1 (110) Sector and Talk simultaneously with the sector. In this way, the handoff when the mobile terminal crosses the sectors of the same base station is referred to as "soft handoff". That is, since the change of the channel element is unnecessary at the time of softer handoff, the time required for handoff processing can be reduced, and the waste of channel resources can be reduced. On the other hand, "hard hand off" is a method of instantaneous disconnection when moving between base stations during a call, but reconnects the call to the next base station when the caller is not disturbed. This type of handoff is less successful than soft handoff because it involves instantaneous disconnection of the call.

2 is a block diagram showing the configuration of a base station apparatus 200 employing three sectors in a conventional mobile communication system.

The conventional base station apparatus 200 includes a channel card 210, a sector interface module 220, an alpha sector portion 230, a beta sector portion 240, and a gamma sector portion 250, and the base station apparatus 200. Is connected to donor device 260 with an RF cable 222.

The channel card 210 switches the sector signals by sector signals, analog-to-digital converts them, digitally synthesizes them, and delivers them to the sector interface module 220.

The sector interface module 220 converts the digitally synthesized sector data into an intermediate frequency allocated to each sector through digital-to-analog conversion, quadrature phase shift keying (QPSK) modulation, and frequency up-conversion. Transfer to each sector.

The alpha sector unit 230, the beta sector unit 240, and the gamma sector unit 250 raise the intermediate frequency signal transmitted from the sector interface module 220 to a predetermined level, convert the radio frequency band into a radio frequency band, and transmit the radio frequency or donor type. Transmit to device 260, receive over-the-air radio signals, or receive mobile communication signals from donor-like device 260, reduce them to a predetermined level, and transmit them to the sector interface module 220 as intermediate frequency signals.

The RF (Remote Frequency) cable 252 is a radio frequency cable for connecting the base station apparatus 200 and the donor-type apparatus 260, and is made of a coaxial cable or an optical cable.

Donor type device 260 represents the equipment of a system with a donor. Such equipment includes an optical repeater, a frequency conversion repeater or a microwave repeater in which a donor is directly connected to the base station apparatus 200, an in-building distributed antenna system, an array antenna system, and an optical antenna system.

However, in the base station apparatus 200 of the conventional mobile communication system configured as described above, in the RF front-end, the conversion of the sector serviced when the communication is serviced to each mobile terminal is initially performed. This was possible by changing the track of the sector paths installed in it. That is, when the manager wants to switch the path serviced by the alpha sector unit 230 to the beta sector unit 240, the manager disconnects the RF cable 252 connected from the donor type device 260 to the alpha sector unit 230. A manual method of directly connecting to the beta sector unit 250 and changing it was taken. Here, the term "initially installed" means that when the base station apparatus 200 is installed for the mobile communication service, the connection with the repeater of the donor-type apparatus 260 for each sector to provide communication service for each sector under the control of the base station is provided for each sector. It refers to the form physically constructed by separate tracks.

In addition, if any sector in the same base station is saturated in the call channel, the sector path is already set up so that the call path cannot be easily converted to another sector. Therefore, there is a heavy load on the call channel, and when it is necessary to change the sector path, it is cumbersome for the administrator to directly reset the system function of the base station. In addition, since the sector area is limited, the processing time is delayed when the traffic of the handoff related signal increases.

In order to solve the above problems, the present invention provides a mobile communication system for automatically converting a sector path of an area served by a base station to a mobile terminal such as a cellular phone, a PCS terminal, or a GSM terminal according to a key input of an administrator. An object of the present invention is to provide a variable sector conversion apparatus and a method thereof.

1 is a cell arrangement diagram when a base station employing three sectors is arranged in a conventional CDMA-based macrocell system;

2 is a block diagram showing the configuration of a base station apparatus 200 employing three sectors in a conventional mobile communication system.

3 is a block diagram schematically illustrating a configuration of a mobile communication system to which a variable sector conversion apparatus is applied according to the present invention;

FIG. 4 is a block diagram showing in more detail the configuration of each sector portion, the variable sector conversion device, and the donor type device of FIG.

5 is a block diagram showing an internal configuration of the variable sector conversion apparatus 310 according to the first embodiment of the present invention.

6 is a block diagram showing a simplified structure of a variable attenuation type sector converter;

7 is a block diagram showing a different configuration of the internal structure of the variable attenuation-type sector converter according to the first embodiment;

8 is a block diagram showing an internal configuration of a variable sector conversion apparatus according to a second embodiment of the present invention;

9 is a flowchart illustrating the operation of the variable sector conversion apparatus according to the present invention;

10 is a block diagram illustrating an apparatus for converting an extended variable sector according to a third embodiment of the present invention;

11 is a block diagram illustrating a variable sector conversion apparatus according to a fourth embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

110, 120, 130: base station 111, 121, 131: cell area

150, 160, 170: base station area 200: base station apparatus

210: channel card 220: sector interface module

230: alpha sector portion 240: beta sector portion

250: gamma sector portion 252: RF cable

260: donor type device 310: variable sector conversion device

320: key input unit 330: state processing unit

340: monitor 411: up-converter

412 directional coupler 413 low power amplifier

414: band pass filter 415: antenna

416: Down Converter 417: Low Noise Amplifier

422: optical repeater 424: variable repeater

426: microwave repeater 428: in-building distributed antenna system

510 ~ 514: Splitter 520 ~ 524: First switch

530 ~ 534: Second switch 540 ~ 544: Combiner

1010 ~ 1014: 12 distributor 1020 ~ 1040: switching part

1110 ~ 1114: 6 Splitter 1120 ~ 1130: 2 Splitter

SW61 ~ SW66: Attenuated Switch SW81 ~ SW92: Variable Switch

In order to achieve the above object, the present invention is connected to a wireless communication base station having a plurality of sectors for sector path setting by a radio frequency (RF) cable, and other wireless to a donor type device comprising a plurality of repeaters. A variable sector converter of a mobile communication system connected by a frequency cable to automatically convert a sector path, the variable switch comprising: a first switch module for firstly selecting a sector path among sector paths connected to the sector; A combiner module for synthesizing the path selected by the module into one sector path, a divider module for distributing one sector path synthesized by the combiner module to a plurality of sector paths, and a sector path distributed by the distributor module A second switch module for secondly selecting a sector path, the first switch module and the second switch module On or off by a switching operation, and sets the path sector, to provide a variable sector converter of the mobile communication system characterized in that it comprises a status control processing unit for storing the set state of the sector path.

In addition, the present invention is a first switch module connected to the base station having a plurality of sector devices for judging a sector by a radio frequency (RF) cable, the first switch module for selecting a sector path of the sector path connected to the sector portion; A combiner module for synthesizing the path selected by the first switch module into one sector path, a divider module for distributing one sector path synthesized by the combiner module to a plurality of sector paths, and a plurality of divider modules for distributing a plurality of sector paths. A second switch module that selects a sector path as a secondary one of the sector paths, a sector path is set by turning on or off switching operations of the first switch module and the second switch module according to a sector path setting command, In a variable sector conversion method of a mobile communication system including a state control unit for controlling the storing of the set state. For example, (a) detecting a switch on or off state of the first switch module and the second switch module, (b) selecting a sector path of one of the first switch modules connected to the sector unit, (c) distributing a plurality of sector paths from the first switch module to the combiner module; (d) selecting one sector path among the sector paths connected from the combiner module to the divider module, (e) the Distributing a plurality of sector paths from the distributor module to the second switch module; and (f) selecting one sector path from the second switch module. To provide.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

The present invention is applicable to all base station systems such as cellular, PCS, IMT-2000 system and GSM, and utilizes the existing system more effectively, and provides a function that can simultaneously support the optimized operation and redundancy function of the cell. . The present invention is not only applied to the base station system, but also to any system, and provides a system that can be applied to any manner that can distinguish the sector or cell, such as CDMA or GSM.

The present invention is applicable to all systems that are directly connected to the RF front-end (RF front-end) operating, repeater system, such as variable repeater, microwave (Micro-Wave) repeater, optical repeater, In building (In Applied to the building-building system and the antenna system as a multi-sector or multi-drop extension type, and to an array antenna system and a smart antenna system. to provide. This will be described in detail with reference to the accompanying drawings.

3 is a block diagram schematically illustrating a configuration of a mobile communication system to which a variable sector conversion apparatus is applied according to an embodiment of the present invention.

The mobile communication system shown in FIG. 3 uses alpha ( ) Sector portion 230 and beta ( ) Sector portion 240 and gamma ( ) Is a basic three sector structure of the sector unit 250, but can be applied to a multi-sector base station (for example, a six-sector base station), etc., and can also be applied to a case where a plurality of base stations of a single sector are collected and located in one region. .

The variable sector converter 310 is connected to the alpha sector unit 230, the beta sector unit 240, and the gamma sector unit 250 of the base station apparatus 200 through an RF cable 252, respectively. The donor device 260 is connected to the output terminal of the device 310 via an RF cable 252. The key sector 320, the state processor 330, and the monitor 340 are connected to the variable sector converter 310.

The RF cable 252 is composed of a coaxial cable or an optical cable and connects the variable sector conversion device 310 and the donor device 260. The connection of the RF cable 252 depends on the number of sectors and the paths it supports. That is, the number of cables to be connected is determined according to the number of paths such as a transmission path, a reception path, a reception diversity path, and a transmission diversity path. This connection is made during initial installation and is not normally modified afterwards. Here, diversity refers to a method in which two or more antennas are physically installed and used to enable transmission or reception of two or more radio waves. In a telecommunications environment, a multipath phenomenon occurs due to reflected waves caused by buildings or terrain on a path, resulting in a fading state in which the amplitude of a received signal varies. Since the magnitude of the received power generated by the fading phenomenon is often lowered to the thermal noise level of the receiver, it is difficult to maintain the transmission quality above a satisfactory level. In addition, when fading occurs, the phase also changes irregularly, which is like having an irregular phase modulation, which seriously affects the transmission quality. In particular, the digital modulation method using the phase modulation method has a very serious effect. In order to prevent transmission quality deterioration due to fading, a diversity scheme is used.

The variable sector converter 310 includes a plurality of switches therein, and sets a sector path by turning on or off a plurality of switches according to a key input selection from the key input unit 320. An internal configuration of the variable sector converter 310 having such a function will be described in detail with reference to FIG. 5.

The key input unit 320 may input a command for turning on or off a plurality of switches provided in the variable sector conversion apparatus 310 or input a command for setting a sector path.

The state processor 330 includes a microprocessor to control a plurality of switches provided in the variable sector converter 310 to be turned on or off or displayed in an on / off state according to a key input of an administrator. Of course, although not shown, the state processor 330 may include a memory that stores a state of a switch inside the variable sector converter 310. The monitor 340 displays the state of the variable sector converter 310 according to a signal applied from the state processor 330.

FIG. 4 is a block diagram illustrating in more detail the configuration of each of the sectors 230 to 250, the variable sector converter 310, and the donor type device 260 of FIG.

Since the internal structure of the alpha sector unit 230, the beta sector unit 240, and the gamma sector unit 250 of the base station apparatus 200 is the same, the internal structure of the alpha sector unit 230 will be described.

The alpha sector unit 230 includes an up-converter 411, three directional couplers 412, a low power amplifier 413, three band pass filters 414, and three. Antennas 415, a down converter (416), a low noise amplifier (LNA) 417, and the like.

The up-converter 411 converts the signal transmitted from the sector interface module 220 to a radio frequency band and raises it to a predetermined level. The directional coupler 412 separates the high frequency signal applied from the up-converter 411 into two paths, and transmits one to the antenna 415 and the other to the variable sector converter 310. Of course, all the directional couplers 412 are connected to the variable sector conversion device 310.

The low power amplifier 413 amplifies the antenna 415 with an appropriate power so that the radio signal is transmitted, and the band pass filter 414 filters the radio frequency signal into a signal of a predetermined band. The low noise amplifier 417 removes and amplifies noise from the radio frequency signal filtered in a predetermined band. The down converter 416 downgrades the radio frequency signal in the microwave band applied from the low noise amplifier 417 via the directional coupler 412 to the intermediate frequency signal.

The donor type device 260 is a system equipment having a donor, and includes an optical repeater 422, a variable repeater 424, a microwave repeater 426, an in-building distributed antenna system 428, and an array antenna. Systems, optical antenna systems, and the like. The in-building distributed antenna system 428 is applicable to the form with donor equipment, and the light scattering antenna system belongs here. Cable distribution antennas are also within the scope of the present invention when distributed through donor equipment.

The optical repeater 422 converts the RF signal of the base station into an optical signal, transmits the optical signal to a desired remote area along the optical path, and then converts the RF signal to an antenna via a high power amplifier. The variable frequency repeater 424 converts an empty FA (Frequency Assignment) signal, which does not use the base station's RF signal, transmits the signal to an antenna, and then receives the signal from a remote location and converts it back to the original frequency signal. Therefore, in principle, it is a way to prevent the rash. The microwave repeater 426 converts an RF signal of a base station into a microwave frequency such as 8 GHz, 18 GHz, and then transmits the signal.

Next, an inbuilding distributed antenna system 428 is described. High-rise buildings in urban centers with dense base stations become vulnerable. In the case of the upper part of a high-rise building, since it is exposed from many base station antennas in a surrounding position, a signal arrives in sufficient intensity from many base stations, and the magnitude of actual radio wave becomes very large. However, signals other than three signals that can arrive at too many base stations and can be demodulated at the same time by the mobile terminal receiver act as noises, resulting in a substantial decrease in the quality of propagation resulting in poor communication. In order to solve this problem, a signal of a specific base station is amplified and re-radiated to a level higher than that of other base stations by a distributed antenna installed in each floor, thereby improving the signal-to-noise ratio for noise caused by other base station signals. In order to pull the signal of a specific base station, in case of a large building, a dedicated base station controller is installed in the basement floor. Otherwise, the building uses a directional antenna in the lower part of the building to receive signals from a specific base station, or to use a microwave repeater or an optical repeater. Also used. This specific base station signal is converted back to an optical signal and radiated again by a small optical repeater installed in each floor, or converted into a low frequency signal and transmitted to an antenna module by a TV coaxial cable, and the antenna module installed in each floor is converted back into an RF signal. It is restored and re-radiated.

Array antenna systems, on the other hand, have several antennas (usually half-wavelength dipoles) spaced at reasonable intervals to achieve directivity and gain that cannot be achieved with one antenna. According to the antenna array method, there are a vertical array method and a horizontal array method, and the uses are different for transmission and reception, respectively, and there are a parallel feeding method and a serial feeding method depending on the feeding type. The optical antenna system can be installed by connecting optical cables up to 20 km away from the base station, and as many as 12 per base station. As a result of the field test, the service coverage of one base station and one optical antenna is the same, and by using the optical antenna, the service area can be expanded up to 12 times (average 7 times). The installation period is also about 20 days for the base station, but it takes about 2-3 hours at most to install one. Not only is the network construction time shortened to a few tenths, but it is also easier and faster to establish a network.

5 is a block diagram showing an internal configuration of the variable sector conversion apparatus 310 according to the first embodiment of the present invention.

The variable sector converter 310 of the first embodiment will be described with a simple structure in which three input sector signals are output in three paths for convenience of description. This structure is capable of outputting by any path of the output signal irrespective of the path of the input sector signal, thereby enabling the variable to other sectors. Methods for selecting a path in the variable sector conversion apparatus 310 may be divided into a variable attenuation type structure and a variable switch type structure. Of course, if the variable attenuation-type structure and the variable switch-type structure are applied in the same way, it is also possible to apply both functions together to employ both the variable attenuator and the variable switch.

The variable sector converter 310 shown in FIG. 5 shows the configuration of a variable attenuation sector converter. These are splitters 510-514 for selecting the sector paths by distributing the input sector signals, first switches 520-524 for selecting the divided sector signals, and second switches for selecting the sector signals. 530 to 534, and combiners 540 to 544 for synthesizing each switched sector signal as one sector signal.

In the case of FIG. 5, by installing switches 520 to 534 for converting sectors in the variable sector converting apparatus 310, the signals are switched by soft hand off or soft hand off without disconnection of the signal when the signals are switched. . To this end, a method of attenuating a signal of a service sector while gradually increasing a signal of a sector to be switched over is used. The simplified structure of this function is described in FIG.

6 is a block diagram illustrating a simplified structure of the variable attenuation sector converter 310. This shows a simple structure that generates one sector output for one sector input, in which the alpha sector signal input from the alpha sector unit 230 is one divider. 510, one first switch 520, one second switch 530, one combiner A configuration of outputting an alpha sector signal via 540 is shown.

Divider 510 distributes three paths of an alpha sector, a beta sector, and a gamma sector to one alpha sector signal input, and includes a first switch. The distributor 520 operates the switch 1 (SW61), the switch 2 (SW62), and the switch 3 (SW63) according to the switching control signal applied from the state processor 330, respectively. 510 and the first switch 522 and the first switch A switching variable is performed to attenuate the signal of the sector in service while gradually increasing the signal of the sector to be transferred to the signal input from 524. Second switch 530 degrees first switch Like the 520, the first switch Each of the combiners by executing switching variable on the sector signal applied from 520. 540, and the second switch 532 and second switch In 534, alpha, beta, and gamma sector signals are output. Combiner 540 may be output as one sector signal selected for an alpha sector, beta sector, or gamma sector signal input from the second switches 530 to 534.

Meanwhile, the internal block structure of the variable attenuation-type sector converter of FIG. 5 may be switched as shown in FIG. 7. 7 shows a first switch for alpha, beta, and gamma sector signals, respectively. 520 and the first switch 522 and the first switch 524 switches to select and apply to couplers 540, 542, 544, each coupler 540, 542, 544 passes to distributors 510, 512, 514, and distributors 510, 512, 514. The second switch 530, 532, and 534 transmits the received signal to the second switch 530, 532, and 534 so as to output an alpha sector, a beta sector, and a gamma sector signal, respectively. This is only the difference of the block configuration order in the internal configuration of Figure 5 and the overall function is applied equally. In other words, even if the internal order of the same functional block is changed to implement the sector conversion device, the structure does not depart from the scope of the present invention, and the structure of using the path compensation amplifier or attenuator according to the attenuation of the signal in these blocks does not depart from the scope of the present invention. can not do it. In other words, changing their module location to perform the same function does not affect performance.

8 is a block diagram showing the internal configuration of the variable sector converter 310 according to the second embodiment of the present invention, which shows the configuration of the variable switch sector converter.

The variable switch sector converter shown in FIG. 8 is similar to that of FIG. 7, but makes a difference only in using the variable switch instead of the variable attenuator in the internal configuration of the switch modules 520 and 530.

First switch In the 810 module, a sector path is selected by turning on or off each switch according to a switching signal applied from the state controller 330, and the selected signal is a combiner. 820 Synthesized from module for splitter to final path selection 830 second switch distributed in the module The final path is selected in the 840 module so that the sector path is set. That is, all sector signals input from the alpha sector unit 230, the beta sector unit 240, and the gamma sector unit 250 may be sent to the donor-type device 260 in the alpha sector path, and the alpha sector unit 230 may be used. The sector signal input from the channel may be sent to both the alpha sector path, the beta sector path, and the gamma sector path.

First switch 810 module and second switch The module 840 represents a structure of a switch for selecting three paths for one input, and may be implemented by using two switch quantities. In this case, the required per port isolation should be achieved. Here, "isolated per port" refers to a spaced distance from an adjacent port, so that the isolation is ensured so as not to be affected by signal interference from an adjacent port. First switch if isolation cannot be achieved per port 810 module and second switch It is preferred to use it with the 840 module. In addition, other methods that support per port isolation and signal switching may be supported using both a variable switch and a variable attenuator. This can be a useful means if the attenuator alone does not provide sufficient isolation.

Next, operations of the variable sector conversion apparatus according to the first and second embodiments configured as described above will be described in detail with reference to the flowchart shown in FIG. 9.

First, in describing the operation of the apparatus, description will be made based on the transmission path, and in the case of the reception path, the transmission of the signal in the reverse direction with respect to the transmission path is omitted.

Once, a plurality of mobile terminals are located in an alpha sector under the control of base station 3 130 and occupy a communication channel, so that base station 3 130 can no longer allocate a communication channel of the alpha sector, A case where 140 is located in an alpha sector under control of base station 3 130 and requests a call for a call connection will be described as an example.

In the base station 3 130, the state processing unit 330 monitors the on or off states of the first switches 520, 522, and 524 and the second switches 530, 532, and 534 of the variable sector converter 310. The current state is output to the monitor unit 340 (S902).

At this time, the manager determines that the sector usage of the base station 3 130 is saturated by checking the sector usage status of the base station 3 130 displayed by the monitor unit 340.

In this state, when there is a call request for the call connection from the mobile terminal 140 located in the alpha sector to the base station 3 130 (S904), the state processing unit 330 switches from the key input unit 320 to the sector conversion. It is determined whether there is a signal input (S906). That is, the control regarding on or off of the first switches 520 to 524 and the second switches 530 to 534 from the key input unit 320 by an administrator who grasps the state of the sector usage displayed by the monitor 340. It is to judge whether a signal is input.

When the manager determines the sector usage of the base station by the monitor unit 340 and recognizes that all sectors of the base station 3 130 are in use, the manager artificially operates the key input unit 320 to input a key for sector conversion. Run For example, when the current alpha sector is saturated, a command for switching to a beta sector or a gamma sector is input by operating the key input unit 320. That is, the first switch 520 and the second switch Input the command to turn off 530, and the first switch 522 and the second switch Enter the command to turn on (532).

When the switching signal is input from the key input unit 320 (S908), the state processing unit 330 transmits the switching signal to the first switch 520 to 524 and the second switch 530 to 534 of the variable sector converter 310. By applying the corresponding switch on or off to change the sector path (S910). That is, in the variable attenuation type of FIG. 6, the first switch 520 switch SW61 and the second switch As the switch SW64 of 530 is gradually turned off, the switch SW62 and the switch SW65 are gradually turned on. At this time, the switch SW63 and the switch SW66 are off. In the variable switch type of FIG. 8, the switches SW81, SW82, and SW83 are turned off and the switches SW84 and SW85 are turned on.

Subsequently, the state processing unit 330 stores the on or off states of the first switches 520 to 524 and the second switches 530 to 534, and displays the setting state with the monitor unit 340 (S912). In operation S914, a call process relating to a call connection of the mobile terminal 140 is performed on the newly set sector path.

On the other hand, in step S908, if there is no command for changing a sector from the key input unit 320, that is, no input of a switching signal, the call channel of the sector in which the mobile terminal 140 is currently located is saturated, so that the base station 3 (130) A message informing that the call is impossible is transmitted to the mobile terminal 140 requesting the call connection (S916).

In the first and second embodiments of the present invention, a variable sector converting apparatus 310 is provided to connect the base station apparatus 200 to convert sectors, and a sector path is provided within the variable sector converting apparatus 310. By providing the first switch (520 ~ 524) and the second switch (530 ~ 534) that can be set can be used to convert the sector path.

FIG. 10 is a block diagram illustrating an apparatus for converting an extended variable sector according to a third embodiment of the present invention, which shows a case in which a maximum of 12 sector paths are output for three sector inputs. In FIG. 10, the same parts as in FIGS. 5 and 7 are denoted by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 10, the first switches 520 to 524 and the couplers 540 to 544 are provided as they are, but instead of the three dividers 510 to 514, 12 dividers 1010 to 1014 are provided, and a second switch 530 is provided. Instead of 534, three switching units 1020, 1030, and 1040 are provided. Each of the switching units 1020, 1030, and 1040 includes four second switches 530 to 434, respectively.

In the first and second embodiments, three second switches are configured to set three paths, but in the third embodiment of the present invention, twelve second switches are configured to set 12 paths. will be.

The variable sector conversion apparatus according to the third embodiment is also described with reference to a transmission path, and in the case of the reception path, three sector paths are selected from signals input from 12 paths. That is, in the case of transmission and reception, only the direction of the path is changed, and all other functions are equally applied.

In the third embodiment, when the number of service sectors is increased, the first switches 530 to 534 are changed from three-way switches to multi-way switches and the number is N. In the case of the combiners 540-544, the quantity is increased to N and is changed to a multi-directional combiner. In the case of 12 distributors 1010 to 1014, the maximum number of connected paths (M) is used, so 12-way is used to support up to 12 and N is used.

The switching units 1020 to 1040 select from N signals, and the three switching unit 1 1010, the switching unit 2 1030, and the switching unit 3 1040 include three 3-way switch modules. have. The quantity thereof changes according to the number of paths (M) connected, and the number of paths of the switch also changes according to the number of service sectors (N).

FIG. 11 is a block diagram illustrating a configuration of a variable sector switching apparatus according to a fourth embodiment, which is configured according to the maximum path connected to a service sector and the minimum number of groups to be operated at the maximum path connection. In Fig. 11, the same parts as those in Figs. 5 and 7 are given the same reference numerals, and detailed description thereof will be omitted.

The variable sector converter of FIG. 11 indicates that 12 paths may be output according to input of 3 sectors and may be operated in at least two groups. "Minimumly connected group" refers to the minimum number of paths operating in the same sector (cell) even if variable. In other words, two outputs of the same sector are configured in one group. In the case of operating in at least four groups, the variable attenuation-type sector switching device of FIGS. 5 and 7 is applied in the same manner as a structure in which a four-way divider is connected to the last stage.

In FIG. 11, the first switches 520 to 524 and the couplers 540 to 544 are provided as they are, but instead of the three splitters 510 to 514, the six splitters 1110 to 1114 are provided in three, and the second switch is provided. Six (530-434) are provided. Each of the six second switches 530 ˜ 534 is connected to one of the two frequency divider 1120 ˜ 1130. The sector paths set by the second switches 530 to 534 are set to two same sector paths by the two dividers 1120 to 1130. That is, the second switch 2 dividers connected to the alpha sector set to 530 By 1120, two alpha sector paths are established. Similarly second switch 2 divider connected to beta sector set to 532 1 212 sets up two beta sector paths. The remaining second switches 534, 530, 532, and 534 are also configured to have two same sector paths to the respective second dividers 1124, 1126, 1128, and 1130.

In the first embodiment and the second embodiment, three second switches are configured to set three paths, and in the third embodiment, twelve second switches are configured to set twelve paths. In the example, six second switches can be configured and grouped into the same sector path by two distributors connected thereto.

The structure applied to the present invention is applicable to both the existing base station system and the system to be developed in the future, and the variable of the sector during the operation to use the system connected through the RF front end more efficiently Alternatively, it can be applied to any system using this structure or an extension of this structure to change the path. That is, the present invention is applied to a structure and a method of changing a sector or a cell by changing a signal path of a donor-type device connected using multiple sectors (Omni cell, 3 sectors, 6 sectors, etc.). It does not go out of category. Operation of selectable structural schemes and final outputs for all routes in group form does not depart from the scope of the present invention.

In addition, it is applied to all structures using a variable attenuator or a switch as a method for path selection or sector (cell) variable, and even if the combination of the two functions does not deviate from the scope of the present invention. Anyone with knowledge of the world can understand.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

According to the present invention, it is possible to effectively operate a system such as a repeater connected to the base station to bring the effect of cell optimization and traffic distribution. In addition, it is possible to implement cell optimization, cell variability, traffic distribution, centralization of resource management, and the like, which can be obtained in a microcell or an array antenna system. In addition, the service failure time of the service area may be minimized by the conversion of the sector (cell) according to the failure of the base station equipment.

Claims (14)

It is connected by a radio frequency (RF) cable to a wireless communication base station having a plurality of sectors for sector path setting, and is connected by a different radio frequency cable to a donor-type device composed of a plurality of repeaters. In the variable sector conversion apparatus of the mobile communication system to automatically convert, A first switch module for first selecting a sector path among the sector paths connected to the sector unit; A combiner module for synthesizing the path selected by the first switch module into one sector path, A divider module for distributing one sector path synthesized by the combiner module into a plurality of sector paths, A second switch module configured to select sector paths secondarily among the sector paths distributed in plural by the distributor module, A state processor configured to set a sector path by turning on or off switching operations of the first switch module and the second switch module, and to store a set state of the sector path. Variable sector conversion apparatus of a mobile communication system comprising a. The method of claim 1, And a key input unit for inputting a command for setting the sector path, and a monitor unit for displaying the sector path setting state. The method of claim 1, The first switch module is connected to each of the sector parts one by one, and each of the first switch modules is connected to the combiner module by distributing a plurality of sector paths, and the combiner module is connected to one sector path. And connected to the distributor module, wherein the distributor module is divided into a plurality of sector paths and connected to the second switch module, respectively, and the second switch module is connected to the donor device each with one sector path. Variable sector conversion apparatus of a mobile communication system. The method of claim 1, And the first switch module and the second switch module include a plurality of variable attenuated switches according to the number of sector paths therein. The method of claim 1, And the first switch module and the second switch module have a plurality of variable switches according to the number of sector paths therein. The method of claim 1, The distributor module includes 12 divider distributors and is provided with the number of sectors, and 12 second switch modules are connected to each of the 12 divider distributors. 12 output paths are connected to the donor type device by means of two switch modules, respectively. The method of claim 1, The distributor module includes six division distributors and is provided with the number of sector devices, and six second switch modules are divided into six divisions and connected to the six division distributors, respectively. And two division dividers connected one by one, so that the same sector paths are grouped in pairs by the two division dividers connected to the second switch module and connected to the donor type device, respectively. It is connected by a radio frequency (RF) cable to a wireless communication base station having a plurality of sectors for sector path setting, and is connected by a different radio frequency cable to a donor-type device composed of a plurality of repeaters. In the variable sector conversion apparatus of the mobile communication system to automatically convert, A distributor module for distributing sector paths applied in each of the sector parts to a plurality of sector paths, A first switch module for synthesizing a plurality of sector paths distributed by the distributor module into one sector path, A second switch module for distributing one sector path synthesized by the first switch module into a plurality of sector paths; A combiner module for selecting one sector path among a plurality of sector paths distributed by the second switch module; A state processor configured to set a sector path by turning on or off switching operations of the first switch module and the second switch module, and to store a set state of the sector path. Variable sector conversion apparatus of a mobile communication system comprising a. The method of claim 8, And the first switch module and the second switch module include a plurality of variable attenuated switches according to the number of sector paths therein. The method of claim 8, The first switch module and the second switch module has a plurality of variable switches in the mobile communication system according to the number of sector paths therein. A first switch module and a first switch module for firstly selecting a sector path among sector paths connected to the sector by a radio frequency (RF) cable connected to a base station having a plurality of sector devices that manage a sector. A combiner module for synthesizing the path selected by the single sector path, a divider module for distributing one sector path synthesized by the combiner module to a plurality of sector paths, and two of the sector paths distributed by the distributor module A second switch module for selecting a sector path by a vehicle, and setting a sector path by turning on or off switching operations of the first switch module and the second switch module according to a sector path setting command, and storing a set state of the sector path; In the variable sector conversion method of the mobile communication system comprising a state control unit for controlling the thing, (a) detecting a switch on or off state of the first switch module and the second switch module; (b) selecting a sector path of one of the first switch modules connected to the sector unit; (c) distributing to the combiner module a plurality of sector paths in the first switch module; (d) selecting one sector path among the sector paths connected to the distributor module in the combiner module, (e) distributing to the second switch module by a plurality of sector paths in the distributor module, (f) selecting one sector path in the second switch module Variable sector conversion method of a mobile communication system comprising a. The method of claim 11, And storing the switched on or off states of the first switch module and the second switch module after the step (f), and displaying the sector routing state thereof. The method of claim 11, And gradually turning on the variable attenuation type switch of the sector to be changed while gradually turning off the variable attenuation type switch of the sector currently set in the first switch module and the second switch module. The method of claim 11, And turning off the variable switch of the sector currently set in the first switch module and the second switch module, and turning on the variable switch of the sector to be changed.