KR100576161B1 - Method and apparatus of repeating system using call statistics analysis - Google Patents

Abstract

The present invention implements a call statistics function in a repeater as well as a base station by implementing a function for analyzing call setup related data between a base station and a mobile communication terminal. By implementing the call statistics analysis function in the repeater, call statistics can be monitored and analyzed from the base station to the repeater at the bottom of the base station. This reduces operational costs and facilitates quality of service management by facilitating cell planning, cell optimization, base station and repeater maintenance.

Repeater, call statistics

Description

{Method and apparatus of repeating system using call statistics analysis}

1 is a block diagram showing the configuration of a general mobile communication network.

2 is a block diagram illustrating a general configuration of a wireless network of a repeater and a base station in a mobile communication network.

Figure 3 shows a block diagram of a general repeater.

Figure 4 shows a block diagram of a repeater with a call statistics analyzer inserted in accordance with the present invention.

5 shows an example of a call statistics analyzer.

6 shows another example of a call statistics analyzer.

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

101: mobile communication switch or router

112, 112: base station controller

121, 122, 123, 124: base station

131, 132, 133, 134: repeater

201: cell coverage of base station 122

211, 212: cell coverage of repeaters

301, 305: duplexer

302, 307: low noise amplifier

304, 309: Power Amplifier

306: Antenna

310: mobile terminal

401, 402: Coupler

411: Call Statistics Analyzer

421: RF or intermediate frequency signal received from the base station

422: RF or intermediate frequency signal received from the mobile communication terminal

511: portion for converting an RF or intermediate frequency signal received from a base station into an intermediate frequency or baseband signal

521: a part for converting an RF or intermediate frequency signal received from a mobile communication terminal into an intermediate frequency or baseband signal

512, 522: ADC (part converting analog signal to digital signal)

513: forward control channel decoding unit

523: reverse control channel decoding unit

531: call statistics calculation unit

601: switching unit

602: switching signal generator

603 control channel decoding unit

M1, M2, M3, M4, M5, M6: mobile communication terminal

The present invention relates to a method and apparatus for analyzing call statistical information for each repeater within repeater coverage in a repeater other than a base station in a mobile communication system.

In general, a mobile communication system is composed of a mobile communication switch, a base station (including a repeater), and a mobile terminal. The mobile switching center connects each base station controller, and consists of information and authentication for subscribers and related additional equipment, and forms a connection with other networks. A base station is composed of a base station controller (BSC), a base station (BTS), a repeater, and the like and performs a connection with an exchange so that a mobile terminal can make a call with a desired counterpart. The mobile communication switch handles calls and calls from each base station and relays access to a public switched telephone network (PSTN) with a central control function so that all base stations can be operated efficiently. Therefore, since the exchange processes calling and calling for each base station, it is possible to obtain call statistics information such as attempt number, completion number, and disconnect number for each base station. The base station operator acquires statistical information of the base station in charge periodically and utilizes it for quality control and cell planning for each base station. If the call success rate, or disconnection rate, of a particular base station becomes particularly bad, it will be necessary to check the station. If there are a lot of calls from a particular base station, it will be considered to add more base stations to maintain a certain level of service quality.

However, in the case of the repeater connected to the base station by wire or wireless, the above call statistics information cannot be obtained. If there is a problem with the repeater, and many call breaks occur in the repeater coverage, the call statistics data of the base station is deteriorated, but from the point of view of the base station operator, the reason why the call statistics data is bad is due to the repeater connected to the base station or another cause. Awareness cannot be identified, and checks at various levels are necessary. Even if there is a repeater error, it causes trouble to check each of a plurality of repeaters connected to the base station. Therefore, it does not immediately improve the quality of the deteriorated service, it takes time, and also increases the operating costs due to frequent checks by the operating personnel.

1 is a block diagram of a general mobile communication network. The mobile communication network is composed of the switch 101, the base station controllers 111 and 112, the base stations 121, 122, 123, and 124, and the repeaters 131, 132, 133, and 134. The base station has a channel resource, and thus has a function of processing a call. In the case of a repeater, the signal amplifies the signal and simply plays a role of extending a call area (coverage) around the repeater.

2 shows a configuration diagram of a wireless network in particular in a mobile communication network. The mobile communication terminals M1, M2 and M3 exist in the call area 201 of the base station 122, and the terminals M4, M5 and M6 exist in the call areas 211 and 212 of the repeaters 132 and 133. In the base station 122 call statistical data, statistical data for terminals M1, M2, M3, M4, M5, and M6 may be collected. If the other terminal does not have any abnormality but the call quality for the terminals M5 and M6 is poor, the base station The overall statistical quality of 122 will be treated as bad. At this time, if there is a function to analyze the call statistics quality in the repeater 133, call setup statistics data due to the terminals M5 and M6 in the call area 212 of the repeater 133 will appear poor, and the quality of service for each repeater (call setup statistics). Since the management is performed, the problem of the repeater 133 will be recognized and coped immediately. In addition, for example, if the number of terminals in the repeater call area 212 in the repeater 133 with the call statistics quality analysis function is excessively large, the base station is installed at the location to maintain a certain level of call quality, the call of the base station Statistical data will not accurately identify a specific location.

The present invention has been made to solve the above-mentioned conventional problems and is to collect call statistics data for each repeater rather than a base station.

In the present invention, the call statistics to the repeater by implementing an analyzer that can decode data by receiving the control channel of the mobile communication in the repeater, in particular, the access channel toward the base station and the paging channel toward the terminal from the base station in addition to the existing repeater function It consists of a system that adds data functionality.

The present invention for solving the above technical problem is to secure call statistics data by adding a device for analyzing the control channel of mobile communication in the repeater system.

3 is a block diagram of a general repeater. The base station signal entering the duplexer 301 may be an optical cable or wireless. The base station signal entering the duplexer 301 is amplified to a power level higher than a predetermined level through the low noise amplifier 302, the filter 303, and the power amplifier 304, and then is emitted to the mobile terminal 310 through the duplexer 305. . In addition, the signal received from the mobile terminal 310 is transmitted through the duplexer 305, the low noise amplifier 307, the filter 308, the power amplifier 309, the power intensity is amplified and then transmitted to the base station via the duplexer 301 Will be.

4 shows a block diagram of a repeater according to the present invention. A call statistics analyzer is added to the general repeater of FIG. 3, and the signal input of the call statistics analyzer is configured to receive an RF signal. Of course, depending on the repeater configuration, the signal input of the call statistics analyzer may be a signal of an intermediate frequency (IF) band. The signal received from the base station is input to the coupler 401 via the duplexer 301. When a portion of the signal is coupled to the call statistics analyzer, the call statistics analyzer receives the incoming signal as an input and receives the signal. After converting into a band signal and a digital signal, the data is decoded and analyzed according to a mobile communication modem standard. Of course, although not illustrated in FIG. 4, the position of the coupler 401 may be in a position where the frequency is down-converted to couple the intermediate frequency signal. In addition, the signal received from the terminal is input to the coupler 402 via the duplexer 305, some of the signal is branched from the coupler 402 is input to the call statistics analyzer 411 to analyze the signal similarly.

5 shows an example of a call statistics analyzer structure. The forward signal 421 received from the base station is digitally converted through the down converter 511 and the ADC 512. The digitally converted signal is decoded into meaningful data in the forward control channel decoding unit 513. The call statistics calculator 531 of the decoded signal analyzes a message related to a successful call in an attempted call to determine the number of successful calls. In this case, the forward control channel decoding unit 513 serves to receive a message of a paging channel in the case of CDMA mobile communication. Other mobile communications other than the CDMA mobile communication may be mapped to other channels corresponding to the calling channel.

The reverse signal 422 received from the terminal passes through the down converter 521 and the ADC 522, and the data of the reverse control channel decoder 523 is decoded as described above. Here, the reverse control channel decoding unit 523 serves to receive a message of an access channel in the case of CDMA mobile communication. The call statistics calculator 531 analyzes only the data of the attempted call in the decoded signal of the reverse control channel to determine the number of attempts.

In the reverse control channel, information about a call attempted by the terminal is contained. Therefore, when the reverse control channel is decoded, the number of attempted calls for a predetermined time can be known. Therefore, the number of attempted calls can be extracted from the call statistics data through the reverse control channel. In addition, the forward control channel transmits a message for allocating radio resources to a call attempted in the reverse direction, and thus, it is possible to extract how many calls are set among the number of attempted calls through the forward control channel. Therefore, through the reverse and forward control channel analysis, it is possible to extract notification information about the number of successful calls, that is, the success rate, among the number of attempted calls.

Depending on the interest of the carrier, you may want to know only the number of attempts, not the success issue. To know only the number of attempts, call statistics using only the configuration of the downlink converter 521, the ADC 522, the reverse control channel decoder 523, and the call statistics calculator 531 which are the reverse paths in the structure of FIG. You just need to implement an analyzer. If only the number of attempts is known, the distribution of terminals in the repeater call area can be known, and the call type analysis in the repeater coverage can be performed, such as whether to replace the base station in terms of cell design or whether the call occurs at all.

6 shows another example of a call statistics analyzer. In TDD mobile communication, a repeater is designed to have a structure in which uplink and downlink frequencies are the same, and switching forward transmission in the direction of the terminal from the base station to reverse transmission in the direction of the base station in the terminal direction according to time. In the case of time multiplexing, the switching unit 601 is controlled from the switching signal generator 602. The switching signal generator 602 is switched so that the repeater also performs forward amplification when the base station is forward transmission. In time, the repeater also controls to switch to reverse amplification. The switching signal generator 602 receives the switching information from the control channel decoder 513. As in the structure of FIG. 5, the switched signal analyzes call setup-related messages in the down-converter 511, the ADC 512, and the control channel decoder 513 to generate statistical data in the call statistics calculator 531. .

The present invention is not limited to the above-described embodiments, and may be variously implemented within the range permitted by the technical idea of the present invention.

 Through the present invention, it is possible to obtain a call statistics function in a mobile communication repeater rather than a base station unit, and thus service quality management can be performed in a repeater unit.

In addition, through the present invention it is possible to obtain the data of the number of times the mobile terminal attempted in the repeater call area.

In addition, through the present invention it is possible to obtain data on the number of successful call set the number of calls attempted by the mobile terminal in the repeater call area.

In addition, by obtaining the number of attempted call times in the repeater call area through the present invention, it can be used for cell design using this.

In addition, since the present invention can obtain statistical data on the success rate in the repeater call area, it is possible to check whether the repeater is normal in service.

Claims (7)

In the mobile communication repeater for amplifying the forward signal received from the mobile communication base station to the mobile communication terminal, and amplifies the reverse signal received from the mobile communication terminal to transmit to the base station, Means for branching the reverse signal to down convert the signal; Means for converting the down-converted signal into a digital signal; Means for decoding data of a reverse control channel among the converted digital signals; Relay apparatus to which the means for extracting the number of attempted call attempted by the terminal from the decoded signal is added The relay apparatus according to claim 1, wherein the reverse signal has the same frequency as the received signal. The relay apparatus according to claim 1, wherein the reverse signal is a downconverted intermediate frequency band signal. 2. The relay device of claim 1, wherein the reverse control channel is an access channel. 2. The apparatus of claim 1, further comprising: means for branching the forward signal to down convert the signal; Means for converting the down-converted signal into a digital signal; Means for decoding data of a forward control channel among the converted digital signals; And a means for extracting the number of successful calls for the attempted call from the base station to the terminal among the decoded signals is further added. 6. The relay device of claim 5, wherein the forward control channel is a call channel. In the mobile communication repeater for amplifying the forward signal received from the mobile communication base station to the mobile communication terminal, and amplifies the reverse signal received from the mobile communication terminal to transmit to the base station, Branching the reverse signal to downconvert the signal; Converting the down-converted signal into a digital signal; Decoding data of a reverse control channel among the converted digital signals; Relay method to which the means for extracting the number of attempted call attempted by the terminal from the decoded signal is added

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