KR20070094125A - Structure for modulated call counter - Google Patents

Abstract

A modularized call counter structure is provided to reduce the size and weight of an equipment by separating a call counter for measuring reverse traffic channels of each repeater and a base station according to functions. A power module(101) supplies rated power to each module. An RF module(103) receives an RF reverse signal provided from a base station, demodulates a baseband signal to be measured and performs ADC(Analog-Digital Conversion) on the baseband signal to provide a digital baseband signal. A CDP(Code Domain Power) module(115) measures the number of forward traffic channels in order to measure the number of the entire calls applied to the base station and each repeater. Multiple searcher modules(107,109,111) receive reverse traffic data of each channel from the digital baseband signal and store them, and determine existence or non-existence of a reverse traffic channel through correlation with respect to the reverse traffic data. A microprocessor module(105) has a PCB for performing data communication with each module, and calculates a substantial load amount of traffic channels based on the detect result of the multiple searcher modules(107,109,111) and the measurement result of the CDP module(115).

Description

Modular call counter structure {STRUCTURE FOR MODULATED CALL COUNTER}

1 is a configuration diagram for explaining the function of the call counter applied to the present invention.

2 is a call counter structure shown in the first embodiment of the present invention.

3 is a call counter structure shown in a second embodiment of the present invention.

4 is a flowchart for explaining the operation of the searcher of the present invention.

<Explanation of symbols for main drawings>

200: call counter 201: housing

203, 305: antenna 205: connector

301: analysis device housing 303: capture device housing

305 data communication line

The present invention relates to an apparatus for measuring reverse load generated in a base station and each repeater. Specifically, a reverse traffic channel for a base station and each repeater is detected in a wireless environment such as 2G CDMA, 3G WCDMA, and WiBro. The present invention relates to a modular call counter structure that separates possible call counters by function.

Currently, 2G system is being serviced nationwide, EV-DO system is also provided and 3G system is also provided. Currently, facility investment of base stations and repeaters is continuously made for smooth communication service of 2G system, and analysis of load of each base station and repeaters is required for network design in this environment. That is, the load of the forward signal for one base station can be obtained by measuring the CDP (Code Domain Power) of the forward signal, but it is not known to which relay or base station the call connected thereto is communicated.

For example, when the signal overlapping area becomes wider than an appropriate area due to the performance of equipment for each base station, a building, and a terrain condition, the amount of signals from other base stations is increased. Therefore, the ratio of noise to the total reception level of the base station for each sector is relatively large, thereby reducing the FA frequency channel available to the base station within the limited FA capacity. Here, without determining the condition of such a base station, it is determined that the number of receiving channels is small and the physical channel transceiver is added to the base station. However, even if the available channel element is increased, the accommodation line does not increase. Due to this situation, it is necessary to accurately understand the capacity per FA of the base station to accurately determine whether to increase the number of FAs or increase the number of physical channels, or to distribute an incoming call to other FAs.

As a result, the actual capacity is different due to the difference in equipment performance and wireless environment of each base station, and the analysis time and application time are different. It is very difficult to perform optimal system engineering, and it is impossible to dynamically allocate free FAs or switch incoming calls. Therefore, in order to measure the actual communication load of the expanded base station and repeater and use it for further expansion and cell planning, the number of reverse calls connected to each repeater and base station can be accurately measured, and the structure can be easily applied in practice. Equipment is required.

The present invention was created to solve such a problem, and an object of the present invention is to measure reverse traffic channels for each repeater and a base station comprehensively, and make a modular call that is easy to install and operate in the field. In providing a counter structure.

Another object of the present invention is to provide a modular call counter structure that can reduce the size and weight of equipment by separating the call counter for measuring the reverse traffic channel for each repeater and base station by function. In providing.

Modularized call counter structure according to the first aspect of the present invention for achieving the above object, the call counter is implemented by separating the function by each function, and built into a housing of a predetermined shape, as the outer wall of the housing It is characterized in that a plurality of antennas are installed.

According to a preferred embodiment of the present invention, the call counter includes: a power module for supplying rated power to each module; An RF module for receiving an RF Reverse signal provided from a base station and demodulating and AD converting a base band signal to be measured to provide a digital baseband signal; A CD module for measuring the number of forward traffic channels to measure the total number of calls to the base station and each repeater; A plurality of searcher modules for receiving and storing reverse traffic data for each channel from the digital baseband signal and determining whether a reverse traffic channel exists through correlation with the reverse traffic data; And a micro process module (PCB) for performing data communication with each of the modules, and calculating a substantial traffic channel load based on detection results of the plurality of searcher modules and measurement results of the CD modules. It is characterized in that the configuration.

The plurality of searcher modules may include at least eight modules.

A modular call counter structure in accordance with a second aspect of the present invention for achieving the above object comprises: capture equipment for capturing a digital signal from a reverse RF waveform; And an analysis device for receiving a signal detected by the capture device to determine whether a reverse traffic channel exists, and providing modularization for each function.

According to a preferred embodiment of the present invention, the capture device comprises: a power module for supplying rated power to each module; An RF module for receiving an RF Reverse signal provided from a base station and demodulating and AD converting a base band signal to be measured to provide a digital baseband signal; A capture module for capturing a reverse RF waveform from the digital baseband signal into a digital signal; And a CD module for measuring the number of forward traffic channels for measuring the total number of calls to the base station and each repeater, wherein each module has a predetermined shape of a housing having one side open. It is characterized by a plurality of antennas are matched to the outer surface of the housing.

In addition, the analysis equipment, the power module for supplying a rated power to each module; A plurality of searcher modules for receiving and storing reverse traffic data for each channel from a digital baseband signal, and determining whether a reverse traffic channel exists through correlation with the reverse traffic data; It has a PCB for performing data communication with each module, and is composed of a micro process module for calculating the actual traffic channel load based on the detection result of the plurality of searcher modules and the measurement result of the CD module. It is characterized by.

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

First, the present invention provides an RF demodulation function for demodulating and digitally processing a baseband signal by receiving an RF reverse signal, a search function for determining the existence of a substantial traffic channel, and a long code. Synchronous modulation to determine long code state, code domain power (CDP) measurement to measure the number of forward traffic channels, reverse traffic channel for each service channel A function-specific module is provided by classifying a call counter configured by a system control function for accepting the number of times and assuming the reception result as a load on the corresponding base station and the repeater. The functional module described above includes a power module for supplying system power, an RF module for extracting a baseband signal from a reverse signal, a microprocessor module for performing system operation control, and a forward traffic channel. CD module for detecting the number (CDP Part), a plurality of searcher module (Searcher Part) for determining the presence of the reverse traffic channel, each module is built in a predetermined shape housing, the outer wall of the housing A plurality of antennas are mounted. Therefore, the call counter according to the present invention implements the functionality of the equipment for each module, it is easy to install in the field, and has the efficiency of movement.

Meanwhile, in order to describe the structure of such a call counter in more detail, first, referring to FIG. 1, it is as follows.

As shown, the modular call counter structure receives a power module 101 for supplying rated power to each module, and an RF reverse signal provided from a base station, and a base band to be measured. RF module 103 demodulating and AD converting the signal to provide a digital baseband signal, and the number of forward traffic channels to measure the total number of calls to the base station and each repeater. CD module 115 for measuring the number, and a plurality of searchers for receiving and storing channel-specific reverse traffic data from the digital baseband signal, and determining the presence or absence of a reverse traffic channel through the correlation of the reverse traffic data Module 107-113 and the reverse traffic data by channel, and distributed to the plurality of searcher modules 107-113. The microprocessor module 105 is configured to calculate the actual traffic channel load based on the detection results of the plurality of search modules 107-113 and the measurement results of the CD module 115.

In addition, the micro process module 105 and the CD module 115 is matched with an antenna for receiving a base station forward signal (Forward Signal), respectively, the RF module 103 receives a repeater reverse signal (Reverse Signal) Antennas for matching are separately matched.

2 is a diagram illustrating a call counter structure according to the present invention. As shown, a housing 201 having one side opened in a predetermined shape is provided, and a plurality of modules are built into the opening surface of the housing 201. In addition, an antenna 203 for receiving the base station forward signal, the base station reverse signal, and the repeater reverse signal, respectively, is provided on one side of the housing 201. The antenna 203 is connected to the corresponding module through the connector 205.

Each module consists of a power module, a micro process module, an RF module, a CD module and a plurality of searcher modules, as described above. Each module includes a respective housing for incorporation into the housing 201 and includes a slot for electrical connection between each module. In addition, as described above in FIG. 2, since the result information detected by the CD module and the RF module, including a plurality of searcher modules, is collected and managed by the micro process module, the micro process module is connected to data communication with each module. It has a PCB for it. The PCB is installed on the inner rear surface of the housing 201 and a plurality of modules are detachably mounted on the PCB.

Meanwhile, as shown in FIG. 3, the call counter includes a capture device for capturing a digital signal of a reverse RF waveform, a signal received from the capture device, and a reverse traffic channel. It can be divided into analysis equipment to determine the presence or absence of channels). That is, the analysis device includes a plurality of searcher modules into the analysis device housing 301, and includes a micro process module and a power module. In addition, the capture device is equipped with an RF module, a CDP module, a capture module and a power module, and a plurality of antennas 305 such as a base station forward antenna, a base station reverse antenna, and a plurality of repeater-specific reverse antennas It includes.

As the capture device is composed of a power module, an RF module, and a capture part, the capture device may be installed in a base station and connected to a higher network, or may be operated by itself together with the analysis device. . The capturing device analyzes a TX call by a CDP module according to a measurement schedule set by an administrator or by a higher setting value, and the capturing module is a reverse RF signal. Capture the waveform as a digital signal. As a result, the measured transmission call analysis information and the digital signal are stored in the internal memory of the capture device or transmitted over the network.

The analysis equipment is composed of a power module, a micro processor module, and a plurality of searcher modules, thereby searching for and analyzing a reverse call. In addition, the analysis equipment may be implemented in a predetermined size and shape, preferably about 19 inches in a rack shape, it is preferable to have a plurality of searcher module to be able to simultaneously search for a number of service channels. The plurality of searcher modules may increase the processing speed according to the call analysis, and the analysis result of the searcher module may be inputted through a network through the microprocessor module or received through other storage devices and analyzed.

The call counter according to the present invention includes a plurality of search modules, and by implementing eight or more search modules in the present invention, the plurality of search modules reduces analysis time for each FA. Looking at the function of the search module with reference to Figure 4 as follows.

The micro process module performs correlation between a baseband signal received from an RF module and a specific long code generated by using a long code mask of 42 bits in a long code generator. Determine whether there is a reverse traffic channel. This is done through the steps S401 to S405 shown. In operation S407, the microprocessor module determines whether there is a reverse traffic channel by comparing a correlation value with the specific long code.

Here, an early dump can be used to shorten the measurement time, and after the early dump length corresponding to about one quarter of the correlation length, the correlation is taken. Compare to early dump threshold to determine whether to correlate continuously. That is, when the correlation value is smaller than the early dump threshold, it is determined that the specific long code being compared is not included and the correlation for the current long code is stopped. Therefore, by feeding back to step S401, the next long code is generated to take a correlation on the new long code.

As a result of re-determination in step S407, if the current correlation result is larger than an early dump threshold, the correlation is taken as the correlation length, and then the operation proceeds to step S409. Compared to the searcher threshold, if it is larger than this, it is determined that the current long code exists. Here, when multiple signals are detected in a multi-path for one traffic channel, it is determined as one traffic channel. As such, as the presence or absence of traffic channels for multiple paths must be determined, the absolute time is inversely proportional to the number of FPGAs operating in the searcher module. You will need more than. Therefore, it is preferable to install at least eight or more surrender modules in the present invention.

As described above, the modularized call counter structure according to the present invention implements a module for each function by classifying the functions of a call counter, and develops a device installed in a base station into a structure that is inexpensive and easy to move and install. It is easy to apply and the data can be analyzed at the upper level by interworking with network to maximize data analysis speed and equipment efficiency.

What has been described above is merely an embodiment of the present invention, and is not limited to the embodiment of the present invention, and as claimed in the following claims, without departing from the gist of the present invention, ordinary knowledge in the field to which the present invention belongs. Anyone having the technical spirit of the present invention to the extent that various changes can be made.

Claims (10)

In a call counter for counting the number of reverse traffic channels, The call counter is separated by each function to implement a modular, and is built in a predetermined shape of the housing, modular modular call counter structure, characterized in that a plurality of antennas are installed on the outer wall of the housing. The method of claim 1, wherein the call counter, A power module for supplying rated power to each module; An RF module for receiving an RF Reverse signal provided from a base station and demodulating and AD converting a base band signal to be measured to provide a digital baseband signal; A CD module for measuring the number of forward traffic channels to measure the total number of calls to the base station and each repeater; A plurality of searcher modules for receiving and storing reverse traffic data for each channel from the digital baseband signal and determining whether a reverse traffic channel exists through correlation with the reverse traffic data; And A micro process module having a PCB for performing data communication with each module, and calculating an actual traffic channel load based on detection results of the plurality of searcher modules and measurement results of the CD modules. And a modular call counter structure. The method of claim 2, wherein the plurality of searcher module, A modular call counter structure comprising at least eight modules. The method according to claim 1 or 2, wherein the micro process module and the CD module match antennas for receiving base station forward signals, respectively, and the RF module receives the repeater reverse signal. Modular call counter structure, characterized in that matching the antenna for. The method of claim 1, wherein the housing, Modularized call counter structure, characterized in that the one side is opened in a predetermined shape, a plurality of modules are detachable to the opening surface, the antenna is connected to the corresponding module through a connector provided on one side of the housing . In a call counter for counting the number of reverse traffic channels, Capture equipment for capturing a digital signal with a reverse RF waveform; And Modularized call counter structure characterized in that it is classified as an analysis device for determining the presence or absence of a reverse traffic channel by receiving the signal detected by the capture device, to provide modularity for each function. The method of claim 6, wherein the capture device, A power module for supplying rated power to each module; An RF module for receiving an RF Reverse signal provided from a base station and demodulating and AD converting a base band signal to be measured to provide a digital baseband signal; A capture module for capturing a reverse RF waveform from the digital baseband signal into a digital signal; And In order to measure the total number of calls to the base station and each repeater, it is composed of a CD module for measuring the number of forward traffic channels (Forward Traffic Channel), each module in a predetermined shape of the housing opening one side And a plurality of antennas mated to the outer surface of the housing. The method of claim 6 or 7, wherein the capture device, Modularized call counter structure, characterized in that installed in the base station is connected to the upper network, or operated by itself. The method of claim 6, wherein the analysis equipment, A power module for supplying rated power to each module; A plurality of searcher modules for receiving and storing reverse traffic data for each channel from a digital baseband signal, and determining whether a reverse traffic channel exists through correlation with the reverse traffic data; It has a PCB for performing data communication with each module, and is composed of a micro process module for calculating the actual traffic channel load based on the detection result of the plurality of searcher modules and the measurement result of the CD module. Modularized call counter structure, characterized in that. The method of claim 9 wherein the searcher module, Modularized call counter structure comprising at least eight modules.

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