KR100681391B1 - Lease line saver - Google Patents

Abstract

An apparatus for saving leased lines for a BS(Base Station) is provided to reduce the number of the leased lines in installing a new equipment by maximizing the use efficiency of subscriber bandwidths through an ATM(Asynchronous Transfer Mode) technique and a bus routing technique. An apparatus for saving leased lines for a BS is comprised of a channel shelf, a power supply unit(110), a main control unit(120), a plurality of channel units(130), and a channel shelf rear part. The power supply unit(110), installed in the channel shelf, receives DC -48 volts and supplies DC +3.3 volts. The main control unit(120), installed in the channel shelf, executes access to an external monitoring device and channel unit control. The channel units(130), installed in the channel shelf, access a base station system and execute multiplexing/demultiplexing for transmission signals. A centralized alarm part, a DS1(E) input/output part, an inter-processor communication connector, and a power port are installed at the channel shelf rear part.

Description

Base line dedicated line saving device {Lease Line Saver}

1 is a block diagram showing a front surface of a dedicated circuit reducing apparatus for a base station for a COT according to an embodiment of the present invention.

Figure 2 is a block diagram showing the back of the COT base station dedicated line saving apparatus according to an embodiment of the present invention.

Figure 3 is a block diagram showing the internal configuration of a dedicated circuit reducing apparatus for a base station for COT according to an embodiment of the present invention.

4 is a block diagram of a channel unit of a dedicated circuit reducing apparatus for a base station for a COT according to an embodiment of the present invention.

Figure 5 is a block diagram showing the front of the dedicated base station line saving device for RT according to another embodiment of the present invention.

Figure 6 is a block diagram showing the back of the RTB dedicated line reduction apparatus according to another embodiment of the present invention.

7 is a block diagram showing the internal configuration of a dedicated base station line saving device for RT in accordance with another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

110: power supply unit

120: main control unit

130: channel unit

140: concentrated alarm panel alarm unit

150: DS1 (E) input / output section

160: communication connector

170: power port

The present invention relates to a base station dedicated line saving device, which consists of one transmission self, and receives a maximum of eight lines of DS1 (E) base station signal for each base station and asynchronously transmits it, and then multiplexes it with an IMA signal of up to 8 LINKs. And it relates to a base station dedicated line saving device performing a demultiplexing function.

In general, due to the activation of wireless communication including WCDMA, broadband services such as high-speed data and video are provided to existing subscribers based on voice and low-speed / mid-speed data.

Accordingly, the service provider bears an additional burden of providing a new lease line as well as providing a new device for a new service. Therefore, the situation is to spend excessive rental costs until the service is activated.

Considering the utilization rate and penetration rate of the initial service, there is a need for a method to enable additional services without additional subscription of a dedicated leased line using an existing line.

Accordingly, the present invention has been made to solve the above conventional problems,

It is an object of the present invention to provide a new base station dedicated line saving device using ATM technology that can efficiently and optimally accommodate various wireless services.

An object of the present invention is composed of one transmission self having a width of 19 inches and a height of 4U (1U = 44.5 mm), which accepts up to eight lines of DS1 (E) base station signals per unit, and ATM-cells them up to eight LINKs. It is to multiplex and demultiplex with IMA signal of.

It is another object of the present invention to provide a dedicated base line reducing apparatus for accommodating multiple vendors.

Still another object of the present invention is to provide a convenient test function and easy operation maintenance using an operation management terminal.

The base station dedicated line saving device of the present invention for achieving the above object,

In the base station dedicated line device,

Channel self;

A power supply unit mounted in the channel self and receiving a DC -48V power supply to supply a DC power of + 3.3V;

A main control unit provided in said channel self for connecting to an external monitoring device and controlling a channel unit;

A plurality of channel units mounted in the channel self and connected to a base station apparatus for performing multiplexing and inverse multiplexing of transmission signals;

It is configured to include a centralized alarm panel alarm unit, DS1 (E) input and output unit, the back of the channel self, which is equipped with a communication connector and a power port for connection to the outside.

The channel unit,

It consists of up to 8 channels of DS1 (E) input / output unit and 1 channel communication connector per channel unit, and it is characterized by 1 + 1 switching function.

The channel unit,

Up to four base stations in 2: 1 mode, four base stations in 4: 3 mode, and one base station in 8: 7 mode can be connected.

The channel unit,

The dual port RAM is configured to communicate with the main control unit.

The channel self rear part,

It is characterized by dual input power by configuring two power ports.

The channel unit,

An ATM converter which receives the input DS1 (E) signal and performs HDLC-ATM and Ethernet-ATM conversion according to a protocol;

An IMA processor for transmitting the ATM cell generated through the ATM converter to an opposite station;

An inverse IMA processor for performing an inverse IMA function from an input signal and transmitting the inverse IMA function to the channel processor;

Receiving unit for monitoring alarm status by checking LOS, EXC, LOF, AIS, RDI, LCD, etc.

It generates an IPC overhead of the transmission signal, characterized in that it comprises a transmitter for scrambling the transmission signal transmitted to the DS1 (E) Link.

The transmitting unit,

It is characterized by inserting a parity to monitor the alarm status of the power.

The channel unit,

It can be mounted on COT or RT, and when operating in RT mode, it communicates with COT device using ICP and provides all control, alarm, and performance information.

When the present invention is configured as a base station dedicated line saving device as described above, it is composed of a transmission self having a width of 19 inches, height 4U (1U = 44.5mm) can accommodate up to 192 base stations per rack, DS1 (E) per base station It accepts up to 8 lines of base station signal and ATM cells, and then multiplexes and demultiplexes up to 8 LINK IMA signals to enable voice, data, and video services. In addition to being able to cope flexibly, the service band can be efficiently used, and base station devices of various vendors can be accommodated, and the operation management terminal can be used for convenient test function and operation maintenance.

The following is a description of the terms used in the present invention.

COT (Central Office Terminal): A base station E1 relay line concentrator located in an exchange office that is a collective device installed in a wireless base station control device.

RT (Remote Terminal): A base station E1 relay line concentrator located in a base station company. It is a stand-alone device installed in a wireless base station.
EMS (Element Management System): Operation maintenance system of base station E1 trunk line concentrator.

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LK (Link): Long haul. E1 relay line port in the dedicated line section

CH (Channel): Short haul. E1 relay line port between base station and RT. E1 relay line port between base station controller and COT

Inverse Multiplex for ATM (IMA): Inverse Multiplexing for ATM

MCU (Main Control Unit): Perform O & M function and Configuration Provision function of device

ATM Conversion & Concentration Unit (ACU): ATM Cell Conversion and IMA Functions

ACO (Alarm Cut-Off)
ICP (Internal Communication Protocol): An internal protocol for communication between COT and RT that controls and monitors standalone devices.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the base station dedicated line saving apparatus of the present invention.

1 is a block diagram showing a front surface of a dedicated circuit reducing apparatus for a base station for a COT according to an embodiment of the present invention.

Referring to Figure 1, the present invention base station dedicated line saving device,

In the base station dedicated line device,

Channel self;

A power supply unit 110 mounted in the channel self and receiving a DC -48V power to supply a DC power of + 3.3V;

A main control unit (120) provided in the channel self for connecting to an external monitoring apparatus and controlling a channel unit;

A plurality of channel units (130) mounted in the channel self and connected to a base station apparatus for performing a multiplex and inverse multiplex function of a transmission signal;

In order to connect to the outside, the central alarm panel 140, DS1 (E) input and output 150, the channel self-contained connector 160 and the power port 170 is mounted on the back of the channel self-installed It is configured by.

The channel self is a PCB mounting structure and consists of a board connector, guide rail, and front panel.In accordance with the standards of international organizations such as IEC and EIA, the front panel dimensions are 19 inches wide and 4U high, and 254.4 ± 0.5mm deep. PCB can be mounted.

The channel self-mounting unit is composed of a power supply unit, a channel unit and a main control unit according to a function.

The power supply unit 110 mounted in the channel self and receiving DC -48V power and supplying DC power of + 3.3V performs a function of outputting DC voltage + 3.3V by inputting DC voltage -48V. It consists of a measuring terminal for voltage monitoring, an ON LED for monitoring the normal operation of the unit, a FAIL LED for monitoring the fault condition, and a switch for shutting off the input power.

The CSEL, MAJ, MIN LED and operation state are provided in the channel self, and the alarm state generated in the device is displayed on the front of the main control unit 120 for connection with an external monitoring device and channel unit control. It is equipped with an ACT LED, an ACO switch for alarm cutoff, and an RST switch for processor initialization.

Mounted in the channel self, the LEDs on the front of the plurality of channel units 130 for performing the multiple and reverse multi-function of the transmission signal by connecting to the base station device to indicate that the ACT LED and circuit pack failure status of the unit is in operation It has a FAIL LED and is equipped with a SF LED to indicate the status of the connected line.

All units in the channel self are capable of up to 8 channels of DS1 (E) service and one Ethernet service per unit, and each group consists of A and B slots to operate and reserve.

The channel unit 130 provides a 1 + 1 switching function in order to ensure the reliability of the circuit, one channel unit up to four base stations in 2: 1 mode, four base stations in 4: 3 mode, 8: 7 In this mode, one base station can be connected.

Channel unit control and monitoring of the main control unit 120 consists of inter-processor communication of each unit.

Each channel unit has a dual port RAM to communicate with the main control unit.

Figure 2 is a block diagram showing the back of the COT base station dedicated line saving apparatus according to an embodiment of the present invention.

As shown in FIG. 2, two power ports 170 of the channel self-back panel are configured to duplicate input power.

The main control unit 120 is a main control unit and has an RS232 port for managing and controlling all information in the self, performing communication with the EMS, and connecting an operation terminal. It has 45 access ports and accepts the TCP / IP protocol.

In addition, it centralizes all alarms in channel self, and displays fault status generated by all units in channel self by CRI, MAJ, MIN LED on the front, and controls and operates up to 16 channel units to provide various alarms and performance information. It has a collection function.

When the power is restarted, the control information is written / read to the nonvolatile memory mounted on the rear of the channel self for normal operation.

Figure 3 is a block diagram showing the internal configuration of a dedicated circuit reducing apparatus for a base station for COT according to an embodiment of the present invention.

4 is a block diagram of a channel unit of a dedicated circuit reducing apparatus for a base station for a COT according to an embodiment of the present invention.

As shown in Figure 4, the channel unit of the present invention dedicated COT base station line reduction apparatus,

A channel processing unit,

An ATM converter which receives the input DS1 (E) signal and performs HDLC-ATM and Ethernet-ATM conversion according to a protocol;

An IMA processor for transmitting the ATM cell generated through the ATM converter to an opposite station;

An inverse IMA processor for performing an inverse IMA function from an input signal and transmitting the inverse IMA function to the channel processor;

Receiving unit for monitoring alarm status by checking LOS, EXC, LOF, AIS, RDI, LCD, etc.

It generates an IPC overhead of the transmission signal, characterized in that it comprises a transmitter for scrambling the transmission signal transmitted to the DS1 (E) Link.

The transmitter is characterized in that for inserting a parity to monitor the alarm state of the power station.

The channel unit 130 has a clock generation function from a signal input from the outside.

In addition, the channel unit 130 receives the input DS1 (E) signal, performs HDLC-ATM and Ethernet-ATM conversion according to the protocol, and transfers the ATM cell generated to the IMA processor to transmit to the counter station.

In addition, the reverse IMA function is transmitted from the input signal to the channel processor.

The receiver monitors an alarm state by checking LOS, EXC, LOF, AIS, RDI, LCD, and the like, and monitors the performance state of CRC-4, CRC-16 or BIP-8 in real time according to a protocol in seconds.

The transmitter generates IPC overhead of the transmission signal, scrambles the transmission signal and transmits it to the DS1 (E) Link, and inserts a parity to monitor the alarm state of the power station.

On the other hand, test pattern transmission and reception function is configured for quality monitoring of the unit and transmission path, and it is desirable to design the channel unit in common so that it can be mounted on COT and RT for operator's convenience. In other words, the mode is automatically selected and operated according to the mounting position.

Figure 5 is a block diagram showing the front of the dedicated base station line saving device for RT according to another embodiment of the present invention.

Figure 6 is a block diagram showing the back of the RTB dedicated line reduction apparatus according to another embodiment of the present invention.

Referring to FIGS. 5 to 6, the RT-channel self is a structure for mounting a PCB, and includes a board connector, a guide rail, a front panel, and the like. The front panel dimension is 19 in width according to the standards of international organizations such as IEC and EIA. With an inch and height of 1U, PCBs with a depth of 254.4 ± 0.5mm can be mounted.

7 is a block diagram showing the internal configuration of a dedicated base station line saving device for RT in accordance with another embodiment of the present invention.

The channel unit is characterized by providing all the control, alarm and performance information by communicating with the COT device using the ICP when operating in the RT mode.

Those skilled in the art to which the present invention pertains as described above may understand that the present invention may be implemented in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not restrictive.

The scope of the invention is indicated by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the invention. do.

As described above, the base station dedicated line saving device of the present invention,

Used for leased line network, it maximizes the efficiency of subscriber bandwidth using ATM technology and bus routing technology to reduce leased line when new equipment is added. It is easy to configure a circuit without any line, and it is possible to flexibly use the band when adding and mounting subscribers, and can provide various services to subscribers by implementing economically and efficiently.

Claims (9)

In the base station dedicated line device, Channel self; A power supply unit mounted in the channel self and receiving a DC -48V power supply to supply a DC power of + 3.3V; A main control unit provided in said channel self for connecting to an external monitoring device and controlling a channel unit; A channel processing unit, An ATM converter which receives the input DS1 (E) signal and performs HDLC-ATM and Ethernet-ATM conversion according to a protocol; An IMA processor for transmitting the ATM cell generated through the ATM converter to an opposite station; An inverse IMA processor for performing an inverse IMA function from an input signal and transmitting the inverse IMA function to the channel processor; Receiving unit for monitoring alarm status by checking LOS, EXC, LOF, AIS, RDI, LCD, etc. It generates an IPC overhead of the transmission signal, and comprises a transmitter for scrambling the transmission signal to transmit to the DS1 (E) Link, and is mounted in the channel self to connect to the base station device to access the multiple and inverse multiplexing function of the transmission signal. A plurality of channel units for performing; Base line dedicated circuit saving device comprising a centralized alarm panel alarm unit, DS1 (E) input / output unit, and a channel self-back unit equipped with a communication connector and a power port for external connection. . The method of claim 1, The channel unit, It is composed of up to 8 channels of DS1 (E) input / output unit and 1 channel communication connector per channel unit, and the dedicated base station line saving device, characterized in that 1 + 1 switching function. The method of claim 1, The channel unit, Up to four base stations in 2: 1 mode, four base stations in 4: 3 mode, and one base station can be connected in 8: 7 mode. The method of claim 1, The channel unit, And a dual port RAM configured to perform communication with the main control unit. The method of claim 1, The channel self rear part, Line saving device dedicated to the base station, characterized in that the input power is redundant by configuring two power ports. delete The method of claim 1, The transmitting unit, The base station dedicated line saving device, characterized in that the parity is inserted to monitor the alarm state of the power station. The method of claim 1, The channel unit, Dedicated base station line-saving device, which can be mounted on COT or Central Office Terminal. The method of claim 1, The channel unit, When operating in RT (Remote Terminal) mode, it communicates with COT (Central Office Terminal) device using Internal Communication Protocol (ICP) to provide all control, alarm and performance information. Base line dedicated circuit saving device.

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