KR100360009B1 - Apparatus for hybrid distributing a multi beam in a mobile system - Google Patents

Abstract

The present invention relates to a multi-beam composite dispersion / compositing apparatus of a mobile communication system.

The present invention provides a multi-beam complex distributed / composite apparatus for a mobile communication system that classifies and outputs multiple beams output through a base station into n (where n is a multiple of 3) sectors. m is a multi-beam forming machine module composed of n multi-beam shaping means for generating multi-beams provided through multiple antennas of multiples of 4 into m / 2 fixed beams and adaptive beams each having a different direction; A switch module connected to m / 2 adaptive beam output stages of the multi-beam shaping means and having m switching means including m / 2 output stages and m / 4 ground stages; a 180 ° coupler module connected to the m / 2 fixed beam outputs or the m / 2 outputs of the switch means; And comprises a synthesizer module for forming the beam paths of the fixed and adaptive beams into n sectors through a 180 ° coupler module. Therefore, the present invention implements the balance of call volume in each sector of the base station, which not only efficiently utilizes frequency resources, but also has an effect of being very convenient in terms of maintenance, and reduces the number of switches required to switch beams, thereby ensuring high stability. There is an effect that can be realized.

Description

Multi-beam Complex Dispersion / Synthesis Device for Mobile Communication System {APPARATUS FOR HYBRID DISTRIBUTING A MULTI BEAM IN A MOBILE SYSTEM}

The present invention relates to a beam dispersion / synthesis technique of a mobile communication system, and more particularly, to a multi-beam complex dispersion / composite apparatus of a mobile communication system that adjusts a service area of a sector variably according to the distribution of call volume of each sector.

Currently, mobile communication base stations in mobile communication systems can be classified into omni base stations and sector base stations, and most mobile communication systems take the form of sector base stations. In the case of such a sector base station, it is composed of three sectors or six sectors. Currently, a CDMA base station takes the form of a three sector base station.

However, the three-sector base station uses an antenna having a fixed beam width to serve an area in which each sector is fixed. As a result, an unbalanced distribution of the call volume in the area controlled by each sector results in maximum call volume. Frequency resources are allocated based on sectors having. Therefore, a sector with a small amount of call may have a low efficiency of using frequency resources, and a sector having a concentrated call amount may reduce a wireless channel use efficiency and reduce coverage. This raises the problem that the service efficiency is lowered and the frequency resource management / maintenance cost is excessive.

In addition, in the conventional mobile communication system employing a fixed three-sector base station, if the call volume distribution of the base station is changed, a countermeasure should be made manually, that is, the direction of the antenna installed on the tower in order to change the sector direction. The need for operators to make changes directly raises the question of not only being cumbersome and dangerous in terms of management, but also very inefficient in their working hours.

Accordingly, the present invention has been made to solve the above-described problem, using a fixed beam having a constant size direction, which is a method used in the existing sector base station, and an adaptive beam that can vary the size and direction of the sector beam Accordingly, an object of the present invention is to provide a multi-beam spreading / compositing device of a mobile communication system that provides a variable amount of call volume balance and efficient use of frequency resources by implementing a variable sector.

In order to achieve the above object, the present invention provides a multi-beam composite distributed / composite apparatus of a mobile communication system that classifies and services multiple beams output through a base station into n (where n is a multiple of 3) sectors. Multi-beam shaping machine consisting of n multi-beam shaping means for generating multi-beams provided by m (where m is a multiple of 4) antennas in the communication system, respectively, with m / 2 fixed and adaptive beams in different directions A module; A switch module connected to m / 2 adaptive beam output stages of the multi-beam shaping means and having m switching means including m / 2 output stages and m / 4 ground stages; a 180 ° coupler module connected to the m / 2 fixed beam outputs or the m / 2 outputs of the switch means; A synthesizer module for forming a beam path of fixed and adaptive beams into n sectors through a 180 ° coupler module is provided.

1 is a fixed beam / adaptive beam distribution diagram for explaining a switching technique of a multi-beam complex dispersion / compositing device of a mobile communication system according to the present invention;

Figure 2 is a detailed block diagram of a multi-beam composite dispersion / synthesis apparatus according to a preferred embodiment of the present invention.

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

102: multibeam former module

104: switch module

106: 180 ° Coupler Module

108: synthesizer module

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

Prior to the description, the multi-beam dispersion / compositing apparatus according to the preferred embodiment of the present invention is composed of three sector structures, and it is assumed that four (12 total) multiplexed beams are generated per sector. In addition, in the present invention, it is assumed that the four multiplexed beams per sector are regenerated into two fixed beams and two adaptive beams to be adaptively synthesized / distributed according to the call distribution.

That is, as shown in FIG. 1, the multiplexed beams applied to the present invention are distributed into a total of 12 beams, and the 12 multiplexed beams are divided into six fixed beams A2, A3, B2, B3, C2, and C3. By reclassifying into six adaptive beams (A1, A4, B1, B4, C1, C4), the direction and beam width of the sector can be changed.

FIG. 2 is a block diagram of a multi-beam composite dispersion / compositing device according to a preferred embodiment of the present invention, and includes a multi-beam shaper module 102, a switch module 104, a 180 ° coupler module 106, and a synthesizer module 108. ).

As shown in FIG. 2, the multi-beam shaper module 102 generates and outputs beams provided from antennas, not shown, as 12 beams having different directions. In other words, the multi-beam shaping module 102 is provided with multi-beam shaping means corresponding to the number of sectors. The multi-beam shaping module 102 generates four beams having different directions from four antennas by one multi-beam shaping means.

The switch module 104 according to the present invention adaptively switches the multiple beams provided through the multi-beam shaper module 102 and provides them to each sector. That is, the switch module 104 is composed of six switching means, each of which switching means beam output ports A4, B1, B4, C1 to be used as adaptive beams among the multiple beams provided from the multiple beam former module 102. , C4, A1).

The switching means in the switch module 104 is composed of two output terminals and one ground terminal, and is switched to the ground terminal under the control of the switch module 104 to correspond to one output terminal of the two output terminals, that is, the magnetic sector. A beam path is formed at an output end, or switched to an output end of the multi-beam shaper module 102 to selectively form a beam path at both output ends. That is, when the switching means connected to the port to be used as the adaptive beam in the switch module 104 is on, it is used as a 2-way splitter, and when it is off, the beam is connected to only one output port. .

The switching means corresponding to A4 and B2, B4 and C1, and C4 and A1 output ports are all turned off or interlocked in opposite directions. For example, when both the switching means corresponding to port A4 and the switching means corresponding to port B1 are off, or when the switching means corresponding to port A4 is on, the switching means corresponding to port B1 is turned off and corresponds to port A4. When the switching means is turned off, the switching means corresponding to the B1 port is turned on. That is, the switching means according to the present invention cancels the beam input to the synthesizer corresponding to the magnetic sector according to the on / off control signal of the switch module 104 described above, and the beam input to the synthesizer corresponding to the other sector is 180 It is switched so as to delay the phase.

The 180 ° coupler module 106 is connected to one of the six fixed beam outputs or one of the two outputs of the switching means, and the six fixed beams connect to the magnetic sectors and the six adaptive beams to the other sectors. do.

The synthesizer module 108 performs the function of adjusting the amplitude and phase characteristics of the beam to match. This synthesizer module 108 may, for example, be configured as a 4-way synthesizer, and performs the function of adjusting the amplitude and phase characteristics of all paths from the multi-beam shaper module 102 to the synthesizer module 108 to match. do.

Hereinafter, in order to more easily understand the object of the present invention, a detailed operation principle in which the variable sector is implemented by the above-described switching operation of the switch module 104 will be described in more detail.

First, when both the switching means corresponding to the A4 port and the switching means corresponding to the B1 port are turned off, it is the same as that of a general sector base station, i.e., a conventional mobile communication system using six fixed beams.

However, when the A4 switching means is turned on and the B1 switching means is turned off, the beam A4 enters into two 180 ° couplers through a switch used as a two-way distributor. Accordingly, it can be seen that the beams A4 input to the sector 1 synthesizer cancel each other because they have 180 ° and 0 ° phase delays, respectively.

On the other hand, since the beam A4 input to the sector 2 synthesizer is 180 ° phase delayed, and the beam B1 is also synthesized to sector 2 with a 180 ° phase delayed state, the beam A4 is synthesized to the beams B1 and sector 2 so that the size of the sector can be changed. will be.

On the other hand, when the A4 switching means is turned off and the B1 switching means is turned on, it operates on the same principle as the above-described procedure except that the beam A4 and the beam B1 are combined in sector 1, which fact is the technical field of the present invention. Those skilled in the art will readily appreciate, and a detailed description thereof will be omitted.

As described above, the multi-beam complex dispersion / sum growth value of the mobile communication system according to the present invention uses six fixed beams and six adaptive beams to vary the size and direction of the sector beams according to the call volume distribution of each sector. It is characterized by maximizing channel utilization efficiency.

As mentioned above, although preferred embodiments of the present invention have been described and described, it should be understood by those skilled in the art that various modifications are possible within the scope of the following claims.

Therefore, the present invention implements the balance of call volume in each sector of the base station, which not only efficiently utilizes frequency resources, but also increases stability and convenience in terms of maintenance. In addition, the present invention has the effect of achieving a high stability by reducing the number of switches required to switch the beam.

Claims (5)

In the multi-beam composite distributed / synthesized device of a mobile communication system for classifying the multiple beams output through the base station into n (where n is a multiple of 3) sectors, A multi-beam shaping means composed of n multi-beam shaping means for generating multi-beams provided by m antennas (where m is a multiple of 4) in the mobile communication system, respectively, with m / 2 fixed beams and adaptive beams having different directions. A beam shaper module; A switch module connected to m / 2 adaptive beam output stages of the multi-beam shaping means and having m switching means including m / 2 output stages and m / 4 ground stages; A 180 ° coupler module connected to the m / 2 fixed beam outputs or the m / 2 outputs of the switch means; And a synthesizer module for forming the beam paths of the fixed beam and the adaptive beam with n sectors through the 180 [deg.] Coupler module. The method of claim 1, And wherein the 180 ° coupler module connects the m / 2 fixed beams to magnetic sectors and the m / 2 adaptive beams to other sectors. The method of claim 1, The switching means cancels the beam input to the synthesizer corresponding to the magnetic sector according to the on / off control signal of the switch module, and the beam input to the synthesizer corresponding to the other sector is switched to be delayed by 180 °. A multi-beam composite dispersion / synthesis device of a mobile communication system. The method according to claim 1 or 3, The switching means is switched to form an adaptive beam path to the m / 2 output stages in accordance with an on control signal of the switch module, and to the m / 4 ground terminals in accordance with an off control signal of the switch module to thereby switch. And to switch an adaptive beam path to an output end corresponding to the magnetic sector among the m / 2 output ends of the means. The method of claim 1, And the synthesizer module adjusts the amplitude and phase characteristics of the beam paths from the multi-beam shaper module to the synthesizer module to coincide with each other.