KR100501042B1 - Method for analysys inner call to each fmc in mobile communication system - Google Patents

Abstract

The present invention relates to a method for analyzing inflow calls for each repeater in a mobile communication system. The present invention relates to a base station or a plurality of repeaters arranged in a plurality of repeaters spaced apart from each other at a base station, and to measure a plurality of preset RTTs. By classifying and statistically processing by distance unit, it is configured to analyze the incoming call flowing into each of the base station and each of the plurality of repeaters individually, and secures the reliability of the mobile communication network by detecting abnormal repeaters remotely quickly through the traffic rate analysis by repeaters. It can be useful in analyzing the batch design and the result of the design.

Description

Analysis method of incoming call by repeater of mobile communication system {METHOD FOR ANALYSYS INNER CALL TO EACH FMC IN MOBILE COMMUNICATION SYSTEM}

The present invention relates to a method for analyzing inflow calls for each repeater in a mobile telephone system, and more particularly, to analyze inflow calls introduced to each repeater individually using a round trip time (RTT). The present invention relates to an inflow call analysis method for each repeater of a implemented mobile telephone system.

As is well known, mobile communication service is exploding in demand due to the convenience of receiving call service regardless of the place, and in response, the technology of each mobile communication service provider and terminal manufacturer Development and service development are fast.

However, such a mobile communication service does not have sufficient network of services compared to the conventional wired communication. Therefore, each mobile service provider accelerates the installation of the base station and the repeater to improve the call quality and the expansion of the service network. have.

In more detail, as shown in FIG. 1, a general mobile communication system includes a mobile station (MS) 100 carried by a user and a base station wirelessly communicating with a mobile terminal 100 located in a predetermined area. A base station control subsystem (BTS) 200, a base station control (BSC) 300 that controls a plurality of (eg, 16) base stations between the base station 200 and the switch 400. And, it consists of a switch (MSC: mobil switching center) 400 to perform the call processing of the subscriber.

In this case, in case of the base station 200 which covers a predetermined service area, it is difficult to install because of its large volume, and the installation cost is high, and when the base station 200 and the area in charge are installed in a narrow range, There is a problem in that the use efficiency is lowered and the existing base station must be rearranged in order to increase the use efficiency.

Therefore, recently, the repeater 250, which is easier to install and inexpensive than a base station, is used to cover a shadow area and a city periphery in a city such as a building or a subway station.

On the other hand, the mobile communication service provider is used as reference data for the layout design of the base station through the periodic analysis of the incoming call, such as the analysis of the traffic rate and the call cutting rate, but for the repeater 250, The analysis could not be performed. That is, since the base station 200 has each individual identification (identification), it is possible to mutually identify, but in the case of the repeater 250 has the same ID as the base station because it is an extension of the base station, and as a result to the repeater 250 Incoming incoming calls are also recognized as incoming calls to the base station 200.

Therefore, in the related art, since the call flowing into the base station 200 and the call flowing into each repeater 250 cannot be identified, the control station does not individually identify the communication state of each repeater, and as a result, It is not possible to take precautionary measures, such as call cutting, which is a major cause of deterioration of the reliability of the mobile communication system and causing dissatisfaction of subscribers.

The present invention has been made in order to solve the above problems, and an object thereof is to provide a method for analyzing inflow calls for each repeater of a mobile communication system which can grasp inflow calls for each repeater.

In order to achieve the above object, a repeater inflow call analysis method of a mobile communication system for separately analyzing a plurality of base stations and mobile terminals flowing into a plurality of repeaters connected to each of the plurality of base stations at the control station, Measuring a travel delay time of the incoming or outgoing signal when an incoming or outgoing signal to the mobile terminal is detected; Calculating a separation distance between the mobile station from which the incoming or outgoing signal is generated and the base station based on the travel delay time; Increasing the frequency of the range including the calculated separation distance by one among a plurality of preset distance ranges by one; When the statistical data is requested while collecting the statistical data by repeating the above steps, the method provides a method for analyzing inflow calls for each repeater of a mobile communication system, including processing and displaying the statistical data in accordance with the requirement. .

Hereinafter, with reference to the accompanying Figures 2 to 5, it will be described in the inflow call analysis method for each repeater of a mobile communication system according to an embodiment of the present invention.

First, the present invention focuses on the fact that the travel delay time (RTT) varies depending on the distance linked to the base station 200 by the transmission / reception signal with the mobile terminal used in the call processing in the mobile communication system. As described above, by measuring an RTT of an inflow call coming from a plurality of repeaters disposed at a base station or a base station spaced apart from each other, and classifying and statistically processing the measured RTT into a plurality of preset distance units, the base station and the plurality of repeaters Separately analyzing the incoming inlet ", which has the core technical idea, and the following description should be understood from such a core technical idea.

FIG. 2 to be described below is a block diagram showing in detail FIG. 1 to implement a method for analyzing inflow calls for each repeater of a mobile communication system according to a preferred embodiment of the present invention, and FIG. 3 is a preferred embodiment of the present invention. FIG. 4 is a detailed flowchart illustrating a method for analyzing inflow calls for each repeater of a mobile communication system according to the present invention, and FIG. 4 is a statistical table summarizing the experimental results calculated by the method for analyzing inflow calls for each repeater according to an exemplary embodiment of the present invention. 5 is a frequency distribution table showing the frequency distribution of the experimental results calculated by the inflow call analysis method for each repeater according to a preferred date of the present invention. At this time, the mobile terminal 100 is composed of a plurality of the base station 200 or the repeater 250, the repeater 250 is composed of a plurality of the base station 200, the base station for the base station controller 300, respectively Although composed of a plurality, it should be noted that for convenience of explanation, each block is shown as one block. In addition, in FIG. 2, the wireless is indicated by a dotted line, and the wired section is indicated by a solid line.

First, referring to FIG. 2, in order to perform the inflow call analysis method for each repeater of a mobile communication system according to an exemplary embodiment of the present disclosure, each component of the mobile communication system performs the following functions.

First, the mobile terminal 100 transmits an outgoing signal including a self identification code and a called party identification code to a corresponding base station 200 through a control radio frequency, that is, a preset control channel, or through a repeater 250. When a call channel is transmitted to the base station 200 and a traffic channel is allocated from the base station 200, the mobile communication service is provided through the communication channel.

The base station 200 monitors the calling state of the mobile terminal 100, and when an outgoing signal is transmitted from the mobile terminal 100, calculates a travel delay time (RTT) from the outgoing signal, and the corresponding mobile terminal 100 While assigning a traffic channel (traffic channel) to the base station controller 300 provides the RTT information and the call channel information. Further, based on the calculated RTT information, by detecting the outgoing signal (that is, actual call data) transmitted from the mobile terminal 100 around the RTT within the communication channel range, and modulating and demodulating the detected outgoing signal In addition, the mobile terminal 100 provides a call service between an incoming call (not shown) requested by the mobile terminal 100.

The base station controller 300 provides the outgoing signal provided from the base station 200 to the switch 400 so that a call connection is made between the originating mobile terminal 100 and the incoming signal requested by the mobile terminal 100. On the other hand, based on the RTT information provided from the base station 200, to calculate the separation distance between the point where the incoming call is generated and the base station 200. That is, it may be calculated by the formula of "distance distance (D) = 15.259 x (RTT-K)". In this case, 15.259 represents a time-distance conversion constant, k represents an error between the experimental value and the theoretical value, and in a preferred embodiment of the present invention, it may be preferable to set k within a range of 268 <k <272.

In addition, the base station controller 300 weights the frequency of the classification unit corresponding to the calculated separation distance by one. At this time, the classification unit will be preset, and each time the outgoing signal is generated from the mobile terminal 100 through the repetition of the above-described process is collected as RTT statistical data accumulated in the frequency for each classification unit base station controller 300 It will be stored in the storage block 350 in the.

In addition, the base station controller 300 provides the control station 500 with the RTT statistical information stored in the storage block 350 when requesting the RTT information from the control station 500.

The control station 500 transmits a request signal of the RTT statistical data to the base station controller 300 based on the operator's operation, receives the RTT statistical data from the base station controller 300, and uses the received RTT statistical data. The processing is performed in a form corresponding to the requirements (e.g., call signal, frequency table for each incoming call, frequency distribution table, statistical analysis for each base station, etc.) and output to a monitor (not shown).

Hereinafter, a description will be given of a process in which a method for analyzing an inflow call for each repeater is implemented according to a preferred embodiment of the present invention in a mobile communication system composed of the aforementioned blocks.

First, when the originating or receiving of the mobile terminal 100 registered in the service area of the local station 200 is requested (S10), the travel delay time (RTT) of the request signal (that is, the originating signal or the incoming signal) is received. Is measured, and the measured RTT information is transmitted to the base station controller 300. At this time, the base station 200 allocates a traffic channel to the mobile terminal 100 in response to an outgoing or incoming signal and connects the other terminal (mobile terminal) connected to the mobile terminal 100 in the local station through another switch or network. Or a landline) to start a call service (S20).

In operation S 20, the base station controller 300 provided with the RTT information from the base station 200 calculates a separation distance between the generation point of the incoming call and the base station 200 based on the RTT information. That is, when k is set in the range of 268 <k <272 (for example, 270), it may be calculated by the formula of `` separation distance (D) = 15.259 x (RTT-K) '' (S 30). .

When the step S 30 is completed, the base station controller 300 fetches the RTT statistical data of the base station from the storage block 350 in itself (S40). The frequency of the classification range including the distance calculated in step S30 among the plurality of classification ranges included in the RTT statistical data is increased by 1, and then stored again in the storage block 350). At this time, the storage block 350 will store the RTT statistical data for each of the plurality of base stations controlled by the base station controller 300, such RTT statistical data, as shown in FIG. It will be classified by call, and the number of incoming or outgoing calls corresponding to the preset distance range will be stored.

By repeating the above steps S 10 to S 50, while collecting the RTT statistical data, if a signal for requesting the RTT statistical data is detected from the control station 500 (S 60), the base station controller 300 stores the storage block. The RTT statistical information stored in 350 is provided to the control station 500. At this time, the base station controller 300 may provide the control station 500 with the RTT statistical data of all the base stations according to the requirements of the control station 500, or may provide only the RTT statistical data of the specific base station, and the incoming call. Only side statistics data or source statistics data may be provided (S 70).

In step S 70, the control station 500 provided with the RTT statistical data processes the provided RTT statistical data in a predetermined format or a format requested by the user (S 80), and then displays the processed data. Output through the omitted monitor. At this time, as shown in Figure 4, it may be displayed as a frequency table for each distance, as shown in Figures 5a and 5b also shown in the distribution table, and can be easily processed in various other forms It may be displayed (S 90).

Hereinafter, in the above-described embodiment, the base station controller 300 processes RTT statistical data as an example, but after processing the RTT statistical data for each base station 300 according to a design change, the processing is performed for each predetermined time unit. The RTT statistics data may be configured to be transmitted to the base station controller 300. In addition, in the above-described embodiment, the RTT statistics data is stored in the storage block 350 in the base station controller 300, but may be stored in a storage block (not shown) provided in the control station 500.

As described above, the present invention may be modified in various forms, and it should be understood based on the technical idea of analyzing the inflow call for each repeater using the travel delay time.

According to the present invention, it is possible to secure the reliability of the mobile communication network by quickly detecting an abnormal repeater remotely through the traffic analysis for each repeater, and can be usefully used in the analysis of the layout design and its design result.

4 and 5, the effect of the present invention will be clearly seen when the present inventors analyze the results obtained through actual experiments. At this time, indicated by ORIG in Fig. 4 is the calling party classification range, and denoted by TER is the called party classification range.

4 and 5 are statistical data accumulated by SK Telecom Co., Ltd. base station for 15 days for a repeater having a 2.1 km optical path section. Referring to FIG. It can be seen that there is a large difference between inflow arcs based on distance 6 (ie, 3km) for the increasing distance range. That is, since the length of the optical path is 2.1 km, if the delay time on the system is included, the distance that the repeater is separated from the RTT and the base station is relatively the same, so that the base station and the repeater can be easily distinguished by the RTT analysis, and each inflow is repeated. It can be seen that the call can be easily analyzed.

4 and 5, it can be seen that the call generated within the distance 0 to 6 is the call introduced to the base station, and the call generated within the distance 6 to 12 can be seen the call introduced to the repeater. As such, by analyzing inflow calls for each repeater, it is possible to easily diagnose the occurrence of a specific repeater remotely.

1 is a system configuration diagram showing a general mobile communication system,

2 is a block diagram in which hardware is added to FIG. 1 to implement an inflow call analysis method for each repeater of a mobile communication system according to an embodiment of the present invention;

3 is a detailed flowchart illustrating an inflow call analysis method for each repeater in a mobile communication system according to an embodiment of the present invention;

4 is a statistical table summarizing the experimental results calculated by the inflow call analysis method for each repeater according to an embodiment of the present invention,

Figure 5 is a frequency distribution diagram showing the frequency distribution of the experimental results calculated by the inlet call analysis method for each repeater according to a preferred date of the present invention.

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

100: mobile terminal (MS) 200: base station (BS)

250: repeater 300: base station controller (BSP)

350: storage block 400: exchanger (MSC)

500: BSM

Claims (3)

In a repeater inflow call analysis method of a mobile communication system for analyzing a plurality of base stations and mobile terminals flowing into a plurality of repeaters connected to each of the plurality of base stations at a control station individually; Measuring a travel delay time of the incoming or outgoing signal when an incoming or outgoing signal to the mobile terminal is detected; Calculating a separation distance between the mobile station from which the incoming or outgoing signal is generated and the base station based on the travel delay time; Increasing the frequency of the range including the calculated separation distance by one among a plurality of preset distance ranges by one; If the statistical data is requested while collecting the statistical data by the repetition of the step, processing the statistical data in accordance with the request conditions and displaying the method according to the repeater of the mobile communication system. The method of claim 1, wherein the calculating of the distance between base stations is performed. When the conversion constant of the time-distance is 15.259, k is the difference between the theoretical value and the experimental value, and RTT is the travel delay time of the incoming or outgoing signal, the equation of `` separation distance (D) = 15.259 x (RTT-K) '' Inflow analysis method for each repeater of a mobile communication system, characterized in that calculated by. The method of claim 2, wherein K is Inlet call analysis method according to the repeater of the mobile communication system, characterized in that set within the range of 268 <k <272.