KR20020056982A - Apparatus for providing power to base station system - Google Patents

Abstract

PURPOSE: An apparatus for supplying power in a base station transceiver subsystem is provided to prevent waste of installation space in a power distribution rack or a rectifier since each rack requires at least two power supply branches, and reduce the cost since a plurality of racks share one or more branches. CONSTITUTION: A power distribution rack(510) distributes direct current provided from a rectifier into a plurality of branches by using a plurality of fuses(511) and a plurality of diodes(513). A plurality of base station controller racks(520-540) are directly connected to the power distribution rack(510), forming a daisy chain form with each other, and receive power from at least one branch. At least, one power terminal(527) of the first base station controller rack(520) directly connected to the power distribution rack(510), distributes power supplied from at least one branch, so that one part of distributed power is provided to the first base station controller rack(520) and the other part of distributed power is provided to the next base station controller rack. At least, one power terminal of at least one second base station controller rack connected to a front end base station controller rack, distributes power supplied from a power terminal of the front end base station controller rack, so that one part of distributed power is provided to the second base station controller rack and the other part of distributed power is provided to the next base station controller rack.

Description

Power supply unit of base station system {APPARATUS FOR PROVIDING POWER TO BASE STATION SYSTEM}

The present invention relates to a cellular mobile communication base station system, and more particularly, to an apparatus for supplying power to a base station system.

A typical cellular mobile communication system includes a base station transceiver subsystem (BTS) for providing mobile communication services to mobile terminals in a predetermined service area (cell), and a plurality of base station controllers (BSCs) for controlling a plurality of base stations. ) And a Mobile Switching Center (MSC) that connects multiple base station controllers to other subscriber systems.

In the cellular mobile communication system configured as described above, the base station and the base station controller are composed of one or a plurality of racks including a plurality of function boards, and each rack must be supplied with DC power to operate. The power supply apparatus of the base station and the base station controller according to the prior art supplies power to the racks by a point to point method or a two step high ohmic distribution (TSHOD) method.

1 is a block diagram showing a power supply apparatus of a base station controller using a point-to-point method according to the prior art.

Referring to FIG. 1, a power distribution rack (PDR) 110 distributes power from a rectifier to a plurality of branches using a plurality of fuses 111 and a plurality of diodes 113. The branches supply power to the base station controller racks 120-140, where each base station controller rack is connected to two of the plurality of branches, one of which is supplied with main power and from the other. Receive reserve power. In the first base station controller rack 120, the first line filter 121 filters the main power supplied from the branch to be delivered to the power distribution panel (PDP) 125, and the second line filter 123 is different from the other. The preliminary power supplied from one branch is filtered and transferred to the power distribution panel 125. The power distribution panel 125 provides the main power supply and the reserve power to each of the plurality of functional boards through the bus. The same is true of the operation of other base station controller racks 130 and 140.

2 is a block diagram illustrating a power supply apparatus of a base station using a point-to-point method according to the prior art.

Referring to FIG. 2, the rectifier 210 rectifies power from an AC distribution unit into a DC power source using the rectifier 211 and then uses a plurality of branches using a DC distribution unit 213 composed of a plurality of switches. To distribute. Each of the base station racks 220-240 receives main power from one branch of the plurality of branches and reserve power from the other branch. In the first base station rack 220, the first line filter 221 filters the main power supplied from the branch to be delivered to the power distribution panel 225, and the second line filter 223 is the preliminary power supplied from the other branch. The filter is delivered to the power distribution panel 225. The power distribution panel 225 provides the main power supply and the reserve power to each of the plurality of functional boards via the bus. The same is true of the operation of the other base station racks 230 and 240.

The point-to-point power supply device configured as described above requires many branches in the power distribution rack 110 and the rectifier 210 because the racks must be connected to each of two branches, and thus requires a lot of installation space. A problem has arisen that the costs of the rack 110 and rectifier 210 have risen very much.

3 is a block diagram showing a power supply apparatus of a base station controller using a TSHOD method according to the prior art.

Referring to FIG. 3, the power distribution rack 310 distributes power from the rectifier to a plurality of branches using a plurality of fuses 311 and a plurality of diodes 313. One of the branches supplies main power to the base station controller racks 320 to 340 and the other branch supplies backup power to the base station controller racks 320 to 340. In the first base station controller rack 320, the first line filter 321 filters the main power supplied from the branch to the power distribution panel 325, and the second line filter 323 is a reserve supplied from the other branch. The power is filtered and transferred to the power distribution panel 325. The power distribution panel 325 provides the main power supply and the preliminary power to each of the plurality of functional boards through the bus. The same is true of the operation of other base station controller racks 330 and 340.

4 is a configuration diagram illustrating a power supply apparatus of a base station using a TSHOD scheme according to the prior art.

Referring to FIG. 4, the rectifier 410 distributes the power from the AC distribution unit to the plurality of branches by using the rectifier 411 and the DC distributor 413. One of the branches supplies main power to the base station racks 420-440 and the other branch supplies backup power to the base station racks 420-440. In the first base station rack 420, the first line filter 421 filters the main power supplied from the branch to the power distribution panel 425, and the second line filter 423 is the preliminary power supplied from the other branch. The filter is delivered to the power distribution panel 425. The power distribution panel 425 provides a main power supply and a standby power supply to each of the plurality of functional boards via a bus. The operation of the other base station racks 430 and 440 is the same.

In the TSHOD type power supply device configured as described above, since the racks share the same two branches, an abnormality occurs in any one of the rack power sources, and the fuses need to be replaced, or the power distribution rack 310 and the rectifier 410. In the event of any of the power distribution branches of the system, all racks had to be powered down. In addition, when a new rack is expanded due to an increase in subscribers, existing power cables cannot be extended, and a new branch for the expanded rack has to be added.

Accordingly, an object of the present invention, which was devised to solve the problems of the prior art operating as described above, is to provide an apparatus for supplying power to a base station and a base station controller rack.

Another object of the present invention is to provide an apparatus for supplying power to a base station and a base station controller rack using a daisy chain scheme.

In order to achieve the above object, a first embodiment of the present invention provides an apparatus for supplying power to a base station controller.

A power distribution rack for distributing the DC power provided from the rectifier into a plurality of branches;

Consists of a plurality of base station controller racks connected to the power distribution rack while being daisy-chained with each other and powered from at least one of the plurality of branches,

A first base station controller rack directly connected to the power distribution rack among the plurality of base station controller racks distributes the power supplied from at least one branch of the plurality of branches to provide the distributed portion to the first base station controller rack. And the remaining part includes at least one power terminal for providing to the next stage base station controller rack,

At least one second base station controller rack connected to the base station controller rack at the front end of the plurality of base station controller racks distributes the power provided from the power terminals of the base station controller rack at the front end and provides a portion of the distributed base station to the second base station controller rack. And the remaining distributed portion includes at least one power supply terminal for delivery to the next stage base station controller rack.

In a second embodiment of the present invention, in the apparatus for supplying power to a base station,

A rectifier for rectifying and distributing the AC power provided from the AC distribution unit to the plurality of branches;

A plurality of base station racks connected to the rectifier in the form of daisy chains with each other and powered from at least one of the plurality of branches,

A first base station rack directly connected to the rectifier of the plurality of base station racks distributes the power supplied from at least one of the plurality of branches to provide the distributed portion to the first base station rack and the remaining portion to be distributed. At least one power terminal for providing to the base station rack of the next stage,

At least one second base station rack connected to the base station rack at the front end of the plurality of base station racks distributes the power provided from the power terminal of the base station rack at the front end, and the distributed part is provided to the second base station rack and the remaining part distributed It includes at least one power terminal for transmitting to the base station rack of the next stage.

1 is a block diagram showing a power supply apparatus of a base station controller using a point-to-point method according to the prior art.

Figure 2 is a block diagram showing a power supply of the base station using a point-to-point method according to the prior art.

3 is a block diagram showing a power supply device of a base station controller using a TSHOD method according to the prior art.

Figure 4 is a block diagram showing a power supply of the base station using the TSHOD method according to the prior art.

5 is a block diagram showing a power supply apparatus of a base station controller according to the present invention.

Figure 6 is a block diagram showing a power supply of the base station according to the present invention.

7 is a configuration diagram of a power supply terminal according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the operating principle of the preferred embodiment of the present invention. Like reference numerals are used to designate like elements even though they are shown in different drawings, and detailed descriptions of related well-known functions or configurations are not required to describe the present invention. If it is determined that it can be blurred, the detailed description thereof will be omitted. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

5 is a configuration diagram showing a power supply apparatus of a base station controller according to the present invention.

Referring to FIG. 5, the power distribution rack 510 distributes the DC power provided from the rectifier to a plurality of branches using a plurality of fuses 511 and a plurality of diodes 513. The plurality of base station controller racks 520 to 540 are connected to the power distribution rack 510 while being daisy-chained with each other and are supplied with power from at least one branch of the plurality of branches. The first and second branches, two of the branches, supply main power to the base station controller racks 520 through 540 and the third and fourth branches, the other two of the branches, provide redundant power to the base station controller racks 520 through 540. Supply.

In the first base station controller rack 520 directly connected to the power distribution rack 510, the first power terminal 527 distributes main power supplied from the first or second branch into two signals so that one signal is the first signal. The signal is provided to the line filter 521 and the other signal is transmitted to the first power terminal 537 of the next base station controller rack 530. The second power terminal distributes the preliminary power supplied from the third or fourth branch into two signals, providing one signal to the second line filter 529 and the other signal of the next base station controller rack 530. It transfers to the second power supply terminal 539.

The first line filter 521 and the second line filter 523 respectively filter the main power supply and the preliminary power to the power distribution panel 525, and the power distribution panel 525 supplies the filtered main power and the preliminary power to the bus, respectively. Provided with multiple function boards.

The remaining base station controller racks 530 and 540 except for the first base station controller rack 520 are powered through the base station controller rack in the preceding stage. The other base station controller racks 530, 540 distribute the power provided from the base station controller rack in the previous stage into two signals, dropping one signal and passing the other signal to the next base station controller rack. The base station controller rack at the last stage drops the power provided from the base station controller rack at the front end. As such, the base station controller racks 520 to 540 are powered using a daisy chain method.

6 is a configuration diagram showing a power supply apparatus of a base station according to the present invention.

Referring to FIG. 6, the rectifier 610 rectifies power from an AC distribution unit into a DC power source using the rectifier 611, and then uses a plurality of branches using a DC distribution unit 613 composed of a plurality of switches. To distribute. The plurality of base station racks 620 to 640 are connected to the rectifier 610 while being daisy-chained with each other and are supplied with power from at least one branch of the plurality of branches. The first and second branches, two of the branches, supply main power to the base station racks 620 through 640, and the third and fourth branches, the other two of the branches supply reserve power to the base station racks 620 through 640. .

In the first base station rack 620 directly connected to the rectifier 610, the first power terminal 627 distributes the main power supplied from the first or second branch into two signals so that one signal is a first line filter ( 621 and the other signal to the first power supply terminal 637 of the next base station rack 630. The second power terminal distributes the preliminary power supplied from the third or fourth branch into two signals, providing one signal to the second line filter 629 and the other signal to the first base station rack 630. 2 to the power supply terminal 639.

The first line filter 621 and the second line filter 623 respectively filter the main power supply and the preliminary power to the power distribution panel 625, and the power distribution panel 625 transmits the main power and the preliminary power through a bus. Provided with each of the functional boards.

The remaining base station racks 630 and 640 except for the first base station rack 620 are supplied with power through the base station rack in the front. The other base station racks 630 and 640 distribute the power provided from the base station rack in the preceding stage into two signals, dropping one signal and passing the other signal to the next base station rack. The base station rack at the last stage drops the power provided from the base station rack at the front end. As such, the base station racks 620 to 640 are provided with power using a daisy chain method.

7 shows a configuration diagram of a power supply terminal according to the present invention.

Referring to FIG. 7, the first power supply terminal 527 receives main power from the first or second branch. Under normal circumstances, the first power supply terminal 527 receives main power from the first branch, but receives main power from the second branch when the main power supply can no longer be supplied due to an error in the first branch. At the first power supply terminal 527, some of the main power provided from the first or second branch is provided to the power distribution panel through the first line filter and the rest is delivered to the power supply terminal of the next rack.

Similarly, the second power supply terminal 529 receives the preliminary power from the third branch under normal circumstances, but receives the preliminary power from the fourth branch when an abnormality occurs in the third branch. At the second power supply terminal 529, some of the preliminary power supply provided from the third or fourth branch is provided to the power distribution panel through the second line filter and the rest is delivered to the power supply terminal of the next rack.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. For example, in this specification, each power supply terminal may receive power from two branches, but only from one branch if reliability is ensured. Each rack can be powered from only one power terminal if higher reliability is ensured. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by those equivalent to the scope of the claims.

In the present invention operating as described in detail above, the effects obtained by the representative ones of the disclosed inventions will be briefly described as follows.

Compared to the point-to-point power supply method, since each rack requires only at least two power supply branches, waste of installation space can be prevented in a power distribution rack or rectifier, and multiple racks have one or more. Sharing branches saves you money.

In addition, compared to the two-stage high resistance distribution (TSHOD) power supply method of the present invention, it is easy to expand the rack since it is only necessary to connect the power distributed from the power supply terminal of the last rack to the expanded rack when the rack is expanded. Because of the redundancy, high reliability can be obtained, and after-sales service is easy even if the fuse needs to be replaced due to power failure.

Claims (11)

An apparatus for supplying power to a base station controller, A power distribution rack for distributing the DC power provided from the rectifier into a plurality of branches; Consists of a plurality of base station controller racks connected to the power distribution rack while being daisy-chained with each other and powered from at least one of the plurality of branches, A first base station controller rack directly connected to the power distribution rack among the plurality of base station controller racks distributes the power supplied from at least one branch of the plurality of branches to provide the distributed portion to the first base station controller rack. And the remaining part includes at least one power terminal for providing to the next stage base station controller rack, At least one second base station controller rack connected to the base station controller rack at the front end of the plurality of base station controller racks distributes the power provided from the power terminals of the base station controller rack at the front end and provides a portion of the distributed base station to the second base station controller rack. And the remaining part of the distribution includes at least one power terminal for transmitting to the base station controller rack of the next stage. 2. The first base station controller rack of claim 1, wherein the first base station controller rack comprises: a first power supply terminal receiving a main power supply from one of the plurality of branches and a second power supplying reserve power from another branch of the plurality of branches; Power supply of the base station system, characterized in that it comprises a power terminal. 2. The system of claim 1, wherein the first base station controller rack is configured to receive redundant redundant power from a first power terminal receiving redundant main power from two of the plurality of branches and another two of the plurality of branches. Power supply of the base station system, characterized in that it comprises a second power terminal provided. The power supply apparatus of claim 1, wherein each of the plurality of branches comprises a fuse and a diode connected in series. The method of any of claims 1 to 3, wherein each of the base station controller rack, At least one line filter for filtering power supplied from each of the at least one power supply terminals; And a power distribution panel for providing power provided through the line filter to each of a plurality of functional boards through a bus. An apparatus for supplying power to a base station, A rectifier for rectifying and distributing the AC power provided from the AC distribution unit to the plurality of branches; A plurality of base station racks connected to the rectifier in the form of daisy chains with each other and powered from at least one of the plurality of branches, A first base station rack directly connected to the rectifier of the plurality of base station racks distributes the power supplied from at least one of the plurality of branches to provide the distributed portion to the first base station rack and the remaining portion to be distributed. At least one power terminal for providing to the base station rack of the next stage, At least one second base station rack connected to the base station rack at the front end of the plurality of base station racks distributes the power provided from the power terminal of the base station rack at the front end, and the distributed part is provided to the second base station rack and the remaining part distributed The power supply of the base station system, characterized in that it comprises at least one power terminal for transmitting to the base station rack of the next stage. 7. The power supply system of claim 6, wherein the first base station rack comprises: a first power supply terminal receiving main power from one of the plurality of branches, and a second power supply receiving preliminary power from another of the plurality of branches; Power supply of the base station system, characterized in that it comprises a terminal. 7. The base station of claim 6, wherein the first base station rack provides a redundant power supply from a first power terminal receiving redundant main power from two of the plurality of branches and another two of the plurality of branches. The power supply of the base station system, characterized in that it comprises a receiving second power terminal. The method of claim 6, wherein the rectifier, A rectifier for rectifying the AC power provided from the AC distribution unit and outputting a DC power source; And a direct current distribution unit for distributing the AC power to the plurality of branches. 10. The apparatus of claim 9, wherein the DC distribution unit comprises a plurality of switches for selectively connecting the AC power to each of the plurality of branches. The method according to any one of claims 6 to 8, wherein each base station rack, At least one line filter for filtering power supplied from each of the at least one power supply terminals; And a power distribution panel for providing power provided through the line filter to each of a plurality of functional boards through a bus.