KR101009703B1 - System and Method for Analyzing Repeaters OverInstalling Rate - Google Patents

Abstract

A repeater overlap rate analysis system and method are disclosed. The analysis system of the present invention includes a plurality of analysis devices respectively connected to a plurality of repeaters connected to base stations of a synchronous or asynchronous mobile communication network and an analysis server connected to the plurality of analysis devices. The analyzer receives the signal of the access channel from the repeater and generates predetermined call connection information. The analysis server may analyze relay coverage overlap by detecting a repeater in which the mobile terminal simultaneously receives a call based on the call connection information provided by the analysis apparatus.

Repeater, Coverage Overlap, Access Channel

Description

System and Method for Analyzing Repeaters OverInstalling Rate

The present invention provides a repeater overlap rate analysis system and method that can determine whether the repeater coverage overlap by receiving and analyzing the access channel (Access Channel) data of the mobile communication terminal received by the mobile communication repeater provided to the base station from the repeater It is about.

The repeater used in the mobile communication network is wired or wirelessly connected to the mobile communication base station (BTS or Node-B) to amplify and retransmit a weak signal transmitted from the base station to the service area, thereby providing high quality communication service. It is used to solve the shadow area that is not received.

For example, when a subscriber attempts to make a call by dialing a telephone number, the terminal sends a signal to the base station. The signal from the terminal may be received directly by the base station, but may also go through one or more repeaters before reaching the base station. In general, repeaters are installed so that their neighbors overlap with other repeaters, so that shadowed areas do not occur. Therefore, when one call attempt by a mobile terminal passes through a repeater, a plurality of repeaters may receive radio signals of the same access channel through different radio paths.

On the other hand, the repeater does not have a separate ID (ID: Identification) that can only identify itself, it is not possible to determine whether the call of the terminal via a specific repeater. Therefore, the minimum unit that can check the details of the service received by the subscriber is limited to the cell of the base station, the call statistics calculated in such a communication system can not track the service history of the subscriber using the repeater, the repeater I can't see how much traffic there is.

In this regard, the applicant has been registered in Republic of Korea Patent No. 733956. According to the patent invention, the analysis device is connected to the repeater extracts the subscriber information from the access channel of the mobile terminal received by the repeater to analyze the traffic of the repeater. Therefore, based on the invention, it is possible to analyze the traffic of the repeaters connected to the base station.

However, one of the purposes of the traffic analysis of the repeater is to relocate and manage the repeater based on the overlapping status between the repeaters with overlapping coverage. For example, if the coverage overlap rate of two repeaters is nearly 100%, one of them is the output can be adjusted or eliminated, and conversely, if the overlap rate is near 0%, the outputs can be adjusted to overlap each other, or You will have to relocate. In order to achieve this goal, more detailed and purpose-oriented means should be presented.

An object of the present invention, the repeater overlap rate analysis system that can determine whether the relay coverage overlap by receiving and analyzing the access channel (Access Channel) data of the mobile communication terminal received by the mobile communication repeater provided to the base station from the repeater And providing a method.

In order to achieve the above object, the repeater overlap rate analysis system according to the present invention includes a plurality of analysis devices connected to each of a plurality of repeaters connected to a base station of a mobile communication network and an analysis server connected to the plurality of analysis devices. The analysis device receives a signal of an access channel of a mobile terminal from a repeater connected to the mobile terminal, extracts the mobile terminal ID and call type information, and extracts the extracted mobile terminal ID, call type information, the connected repeater ID and the access channel. The call connection information including the access time information receiving the signal is provided to the analysis server.

The analysis server extracts call connection information having the same terminal ID, call type information, and access time information among the call connection information provided by the plurality of analysis apparatuses, and the relay ID included in the extracted call connection information. It is determined that there is overlap of coverage in the corresponding relay period.

According to an embodiment, the call connection information extracted by the analysis server may be the same as the terminal ID and the call type information among the call connection information provided from the plurality of analysis devices, and the difference of the access time information may be within a preset range. Which may include call connection information.

In addition, the plurality of analyzers are preferably synchronized with each other by time information provided from an external device to match mutual access times. Here, the external device may correspond to a base station or a separate NTP (Network Time Protocol) server.

In accordance with another aspect of the present invention, there is provided a method for analyzing a repeater overlap rate, comprising: providing a plurality of analysis devices connected to a plurality of repeaters connected to a base station of a mobile communication network, and an analysis server connected to the plurality of analysis devices. Extracting the mobile terminal ID and call type information from the signal of the access channel by receiving the signal of the mobile terminal from a repeater connected to the two analyzers, the mobile terminal IDs extracted by the plurality of analyzing apparatuses; Providing the connected relay ID and the signal of the access channel to the analysis server together with call type information, the terminal ID and call type information among the call connection information provided by the analysis server by the analysis server. Call connection information with the same access time information Shipment step and a step of determining that there is the analysis of the server is a relay coverage overlapping period corresponding to the repeater identity contained in the extracted call connection information.

According to the repeater overlap rate analysis system according to the present invention, it is possible to identify the duplicated and non-overlapping details of other repeaters from the total attempted calls of the mobile terminal received by the specific repeater. For a specific repeater, a ratio of a call received only by the corresponding repeater and a call received by overlapping with another repeater may be obtained.

Rapid response is possible in the event of a specific repeater failure. In case of failure of a specific repeater, emergency service is possible in place of a failed repeater by checking the coverage relationship between the corresponding repeater and the surrounding repeater and adjusting the output of the surrounding repeater even before the field trip.

Based on the duplication rate of the repeaters, the operator can efficiently manage the repeaters related to the installation and relocation of the repeaters. If a specific repeater is completely redundant with other repeaters, it can be used as a basis for removing or relocating the repeater, and periodically check for duplicates to relocate or adjust the output of specific repeaters if there is a change in the duplicates. To ensure smooth service.

Since the repeater obtains data on call overlap reception, it can be used as statistics and comparison data calculated at the base station. In other words, it is possible to solve the problem that the statistics for each repeater due to the simple summation of the repeater traffic are more than the number calculated by the base station without considering the overlapping details.

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail with reference to the drawings.

1 is a block diagram illustrating a network including a repeater overlap rate analysis system of the present invention, and FIG. 2 is a block diagram of an analysis apparatus included in the analysis system of FIG. 1.

Referring to FIG. 1, a mobile communication network in which a plurality of repeaters 21 to 32 are connected to one base station 10 is illustrated. The mobile communication network of FIG. 1 can be applied not only to a network based on a synchronous CDMA (Code Division Multiplex Access) protocol, but also to an asynchronous mobile communication network based on a CDMA2000 1xRTT or Wideband CDMA (WCDMA) protocol. Accordingly, the mobile terminal 50 attempts to call through an access channel with the base station 10 connected or directly connected through at least one repeater of the plurality of repeaters 21 to 32, and the base station 10 A voice, video, or data call service is provided while receiving a downlink signal.

The analysis system of the present invention includes at least one analysis device (101 to 105) connected to a plurality of repeaters (21 to 32) belonging to a mobile communication network, and an analysis server (130) connected to the at least one analysis device (101 to 105). ). The analysis server 130 may also be connected to an analysis device (not shown) connected to repeaters (not shown) of other base stations (not shown).

Analysis apparatuses 101 to 105 may be installed for each repeater to receive a signal from one repeater, or may receive signals from several repeaters connected to one base station 10 by different channels and input terminals. 1 illustrates an example in which a total of 12 repeaters 21 to 32 are divided into first to third analysis devices 101 to 105.

Suppose a mobile terminal 50 transmits a radio signal to a base station 10 through an access channel according to an outgoing call, and the radio signal is transmitted to a base station through a repeater. In this case, although a wireless signal may be received in only one repeater, a case may be simultaneously received (or at a time difference) to a plurality of repeaters according to the overlap of coverage of the repeater.

For example, if only the first relay 21 receives the radio wave of the terminal, the analysis system will generate one information for one outgoing call. However, if the first repeater 21 and the second repeater 22 receive the same outgoing call at the same time, the analysis system finally generates two pieces of information for the same outgoing call, which information determines the repeater overlap. Can be used for

First, referring to FIG. 2, the first analysis device 101 will be described on behalf of the analysis device of the repeater overlap rate analysis system. The analyzer 101 includes a repeater interface 201, a clock synchronizer 203, a channel receiver 205, a data storage 207, and a transmitter 209.

The repeater interface unit 201 provides an interface between the repeater connected to the analysis device 101, provides a separate terminal for each repeater, and the repeater receives and provides the mobile terminal 50 to the base station 10. Receive access channel data. In the example of FIG. 1, the first analyzer 101 is connected with four repeaters 21-24.

The clock synchronizer 203 receives time information from an external device, and synchronizes with other analyzers 103 and 105 connected to the same base station to remove time differences between the analyzers. Accordingly, when different repeaters simultaneously receive the same terminal wireless signal, the information generated by each of the analysis devices 101 to 103 is determined to be determined by the same call by the analysis server 130.

Since the clock synchronizer 203 is for synchronizing with other analyzers 103 and 105, the clock synchronizer 203 may be time information provided by any external device. For example, in the case of a synchronous mobile communication network, a GPS signal provided by the base station 10 may be used. In the case of an asynchronous mobile communication network, time information provided by a separate NTP (Network Time Protocol) server may be used. In the case of the synchronous mobile communication network, the clock synchronous unit 203 receives the signal of the mobile terminal 50 in synchronization with the base station as well as other analyzers based on the time information provided by the base station 10.

The channel receiving unit 205 demodulates an uplink signal of the mobile terminal received through the relay interface unit 201 to determine predetermined information (hereinafter referred to as' access data extraction information) in an access channel of the mobile terminal. ').

Here, the access data extraction information includes information for identifying the type of call together with the terminal ID. In the case of synchronous, MIN (Mobile Identification Number) is used, and in case of asynchronous, International Mobile Station Identity (IMSI) or Temporary Mobile Subscriber Identity (TMSI) is used. In addition, information for call type classification includes call type information (eg, origination and termination) for distinguishing originating and incoming calls, and service option information (eg, data call for SO33 and voice call for SO3). ) Is the case of synchronous. In asynchronous mode, establishment cause information (eg, outgoing voice, incoming voice, long call, location registration, etc.) corresponds to additional information for identifying the type of call.

The data storage unit 207 maps and stores the access data extraction information extracted by the channel receiver 205 to the corresponding access channel processing time information (hereinafter referred to as 'access time information').

The transmission unit 209 may include call access information (CAI) including access data extraction information, access time information, a repeater ID, and an analysis unit ID (RCAU ID) stored in the data storage unit 207 at predetermined time intervals. Send to the analysis server 130. Here, the repeater information and the ID of the analyzer itself correspond to information already held by the analyzer 101 itself.

Table 1 below shows an example of call connection information (CAI) provided by the analysis device 101 of the present invention.

Item Synchronous CAI Asynchronous CAI
Network information MSC ID
BSC ID
BTS ID MSC ID
RNC ID
Node-B ID Analytical Device Information RCAU ID RCAU ID Repeater Information Repeater ID Repeater ID
Access data extraction information
MIN IMSI, TMSI Call type Establishment Cause Service option Access time information Time Time

Here, the network information includes devices including a base station (Node-B, BTS), a radio network controller (BSC, RNC), a mobile switching center (MSC), etc., located above the repeater to which the analyzers 101 to 105 are connected. As information on, the analysis server 130 may be generated using the analysis device information (RCAU ID) or repeater information provided by the analysis device (101 ~ 105).

When call connection information transmitted from a plurality of analysis apparatuses 101 to 105 is transmitted to the analysis server 130, the analysis server 130 determines the overlapping relationship between the repeaters based on the call connection information accumulated for a certain period of time. .

The analysis server 130 is basically regarded as a different radio signal for each call connection information. Exceptionally, call connection information in which only the relay information is different from the repeater information in Table 1 is the same by the same radio signal.

However, the access time information is different. The access time information corresponds to a time at which the corresponding analysis device 101 to 105 receives or processes the access data. Therefore, although it is normal that access time information should be the same for the same radio signal, different delays may be included even if different repeaters receive the same radio signal according to a radio situation. Different delays for each repeater can cause access times for the same radio signal to vary from a few hundred microseconds (Sec) to several seconds.

Therefore, the access time generated from the plurality of repeaters for the same radio signal may vary. However, if at least the access time differs by several seconds or more, it is difficult to judge the same radio signal.

In consideration of this, the analysis server 130 may determine the same radio signal if the access time is within a predetermined time difference experimentally determined and the remaining items are the same. Naturally, if the time range set by the analysis server 130 is wide, the likelihood that the same wireless signal is determined to be the same signal will be increased, but the likelihood that different signals will be determined to be the same signal will be increased.

Hereinafter, a method of determining the repeater overlap of the analysis server 130 will be described with reference to FIG. 3. Repeater analysis of the repeater of the analysis server 130 may be variously performed, but it is preferable to analyze by dividing the call connection information (CAI) associated with the same base station in a predetermined time zone in terms of processing efficiency.

The analysis server 130 extracts call connection information of a predetermined time zone associated with the same base station from among call connection information received and stored from the analysis apparatuses 101 to 105. The different network information among the call connection information is determined by different radio signals (S301).

The analysis server 130 classifies the access data extraction information among the extracted call connection information. If the access data extraction information is different from each other, it is determined that the call connection information is from another call (S303 and S305).

As a result of the determination in step S303, it is determined whether the access time of the call connection information with which the access data extraction information coincide with each other. If there is a match, the radio signals of the same call are received by repeating the repeaters of the call connection information. It is determined that it is (S307, S309).

As a result of the determination in step S307, even when the access time of the compared call connection information does not match, if the difference in the access time is within a predetermined range, the radio signals of the same call are received by overlapping the repeaters of the corresponding call connection information. If it is determined that the difference in access time is out of a predetermined range, it is determined that it is a radio signal by different calls. Naturally, call connection information determined to be by the same call as compared to other call connection information with faster access time is not a reference for comparison with other call connection information (S311).

By the above method, the analysis server 130 may determine whether coverage of the relay period overlaps by using the result determined that two or more repeaters have received the radio signal by the same call. For example, if it is determined that most of the radio signals overlap between two repeaters, it can be used as a basis for removing one or adjusting its position.

The invention can be implemented in methods, devices and systems. In addition, when the present invention is implemented in computer software, the components of the present invention may be replaced with code segments necessary for performing necessary operations. The program or code segment may be stored in a medium that can be processed by a microprocessor and transmitted as computer data coupled with carrier waves via a transmission medium or communication network.

The media that can be processed by the microprocessor include electronic circuits, semiconductor memory devices, ROMs, flash memory, electrically erasable programmable read-only memory (EEPROM), floppy disks, optical disks, and hard disks. (Hard) Includes the ability to transmit and store information such as disks, fiber optics, wireless networks, and the like. Computer data also includes data that can be transmitted over electrical network channels, optical fibers, electromagnetic fields, wireless networks, and the like.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the above-described specific embodiment, the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

1 is a network diagram including a repeater overlap rate analysis system of the present invention,

2 is a block diagram of an analysis apparatus included in the analysis system of FIG. 1, and

3 is a flowchart provided to explain a method of determining repeater overlap of an analysis server.

Claims (6)

A plurality of analysis devices connected to a plurality of repeaters connected to a base station of a mobile communication network, and an analysis server connected to the plurality of analysis devices, The analysis device receives a signal of an access channel of a mobile terminal from a repeater connected to the mobile terminal, extracts the mobile terminal ID and call type information, and extracts the extracted mobile terminal ID, call type information, the connected repeater ID and the access channel. Providing the call connection information including the access time information receiving the signal to the analysis server, The analysis server extracts call connection information having the same terminal ID, call type information, and access time information among the call connection information provided by the plurality of analysis apparatuses, and the relay ID included in the extracted call connection information. Repeater overlap rate analysis system, characterized in that it is determined that there is a coverage overlap in the corresponding relay period. The method of claim 1, Call connection information extracted by the analysis server, Repeater overlapping rate analysis system, characterized in that the terminal ID and call type information among the call connection information provided from the plurality of analysis devices, the call connection information includes a call difference information within a preset range of the difference of the access time information; . The method of claim 1, The plurality of analyzers are overlapping rate analysis system, characterized in that the mutual synchronization by the time information provided from the external device. In the repeater overlap rate analysis method of the overlap rate analysis system including a plurality of analysis devices connected to a plurality of repeaters connected to a base station of a mobile communication network and an analysis server connected to the plurality of analysis devices, Receiving, by the plurality of analyzers, a signal of an access channel of a mobile terminal from a repeater connected thereto to extract the mobile terminal ID and call type information from the signal of the access channel; Providing, by the plurality of analysis devices, the connected relay ID and the signal of the access channel to the analysis server together with the extracted mobile terminal ID and call type information; Extracting, by the analysis server, call connection information having the same terminal ID, call type information, and access time information among the call connection information provided from the plurality of analysis devices; And And determining, by the analysis server, that there is a coverage overlap in the relay period corresponding to the repeater ID included in the extracted call connection information. The method of claim 4, wherein The call connection information extracted by the analysis server in the extracting step, Repeater overlapping rate analysis, characterized in that the terminal ID and call type information from the call connection information provided from the plurality of analysis devices are the same, and the call connection information in which the difference of the access time information is within a preset range Way. The method of claim 4, wherein In the extracting of the mobile terminal ID and call type information, the plurality of analyzers are synchronized with each other by time information provided from an external device.

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