KR101103232B1 - Diagnostic monitor system and method using smart phone in mobile communication environment - Google Patents

Abstract

PURPOSE: A wireless environment diagnosis system and method thereof are provided to analyze a wireless communication environment through measurement data in a smart phone. CONSTITUTION: A smart phone(300) is wirelessly connected to a CAI(Common Air Interface). The smart phone includes a display unit. The display unit analyzes the CAI message which is transmitted from the CAI message receiving process device. The display unit displays the analyzed content. A wireless environment diagnosis analysis application is installed in the smart phone.

Description

System and method for diagnosing wireless environment using smartphone in wireless mobile communication environment {Diagnostic monitor system and method using smart phone in mobile communication environment}

The present invention relates to a wireless environment diagnosis system and method for diagnosing and analyzing a wireless environment between a base station and a terminal in a wireless mobile communication network environment. Particularly, the present invention relates to a common air interface (CAI) message for a wireless environment with a base station in a wireless mobile communication network. The present invention relates to a wireless environment diagnosis system and method using a smartphone in a wireless mobile communication environment that can be measured by using the measurement data, and using the measured data in a smartphone to analyze and display a wireless communication environment.

In general, call quality of a network environment such as a mobile communication network, a personal mobile communication network, a wireless data network, a public communication network, and a next-generation mobile communication network changes depending on the mobile terminal and the load of a base station.

That is, when subscribers are gathered to a specific base station, call quality is degraded due to channel interference, and the service radius of the base station is reduced. As a result, the mobile communication terminal which is busy at the base station boundary point performs a handoff to a neighboring base station or a call is dropped.

As such, when a call is frequently disconnected, a subscriber's dissatisfaction occurs and a mobile communication service cannot be provided smoothly.

Conventionally, when a problem such as call drop or call failure due to poor call quality occurs in a specific area, the network measuring equipment is taken to the base station of the mobile communication terminal to analyze the cause of the problem. The method used to measure the level of power received from the network or to generate a test call from the network measuring equipment to analyze the cause of the problem.

In addition, each mobile network operator is moving several areas in advance before problems such as call disconnection, measuring the wireless environment with the measuring equipment to prevent problems in advance and to optimize the radio for more stable call quality.

In the past, a method of measuring a network environment in a specific region and directly analyzing, analyzing, and diagnosing the measured data was used to identify a problem and a cause.

However, direct analysis, diagnosis, and judgment by such engineers took time to solve simple problems. In addition, when engineers face a wider variety of problems, significant trial and error occurs in determining the cause and solving the problem, and it is very difficult to find the exact cause of the performance degradation.

In particular, engineers or inexperienced inexperienced in wireless optimization can experience greater difficulties and cause greater problems such as analysis and diagnostic errors or delays.

If the cause analysis is delayed due to these problems, the disconnection phenomenon is neglected, causing problems such as uncomfortable mobile service subscribers and poor call quality. Therefore, mobile service providers need a way to solve these problems. Doing.

In order to solve the above conventional problems, the prior invention (hereinafter, referred to as' notice known invention ') registered under the registered patent number '10 -0764425' is transmitted during the handoff process between base stations in a wireless mobile communication network environment. CLAIMS 1. An apparatus for analyzing a cause of call truncation using received Common Air Interface (CAI) messages, comprising: message extracting means for receiving the messages and extracting a message used for analysis; Means for dividing the extracted message into a message corresponding to Code Division Multiple Access (CDMA) and a message corresponding to Wide-Band Code Division Multiple Access (WCDMA); Analysis means for determining the cause of call truncation by substituting parameters and values included in the extracted message to conditions causing call truncation according to each predetermined network method; And cause information display means for displaying the cause matters according to the determination result of the analysis means in text according to the CDMA network and the WCDMA network.

That is, referring to FIG. 1, the call disconnection cause analysis apparatus 100 according to a known prior invention may include a CAI message receiving unit 110 for receiving measured CAI (Common Air Interface) message data and an access network for classifying messages for each network. The classification unit 115, a message extraction unit 120 for extracting a message used for cause analysis, a message alignment unit 130 for sorting and classifying messages, and a cause analysis unit for analyzing the cause of call truncation based on the messages ( 140), a measure retrieval unit 150 for reading measures for the cause of call cutting, an output unit 160 for outputting contents to a screen or an output device, and a storage unit 170 for recording and storing data. .

Here, CAI stands for Common Air Interface and is a set of open standards that refer to the physical and logical characteristics linked between the base station and the mobile terminal. That is, CAI is an interface protocol for wireless communication, and is a standard standard for common wireless connection conditions such as frequency, communication method, and connection method between voice and non-voice mobile communication terminals and base stations. According to the CAI, the message transmitted / received between the terminal and the base station is measured by a measuring device, and the extracted data is received through the CAI message receiving unit 110.

The cause analyzer 140 includes a CDMA analyzer 141 and a WCDMA analyzer 142. The output unit 160 performs a function of displaying in text or graphic so that the user can check the information. The information displayed on the output unit 160 includes the cause matter 161 determined by the cause analyzer 140, the measure matter 162 read by the measure measure searcher 150, and the message sorter 130. A wireless state 163 that is reprocessed data information.

By using the information displayed on the output unit 160, the user can easily identify the cause of the call disconnection, take quick action, and understand the overall radio state to effectively cope with the problem situation.

The prior art as described above, by assigning the data measured when the call disconnection-related problems between the radio environment measurement occurs into the analysis algorithm to identify and provide the cause of the call disconnection, the wireless environment and wireless easily without the difficult analysis and understanding process of the engineer Analyze the condition and provide the effect.

By the way, the known prior art provides the above effects, but a separate analysis unit for problem cause analysis, a storage unit for storing related data, and an output unit for outputting a problem cause and a problem cause analysis result must be newly provided. For example, since hardware and software must be newly developed, development costs, manufacturing costs, and product costs are increased, and development periods take a lot of time.

In addition, the known prior art has a problem that can not be provided to analyze and diagnose the cause and call state of the call disconnection in the WiBro wireless mobile communication network environment.

Accordingly, the problem to be solved by the present invention is to solve the problems of the prior art as described above, to measure the wireless environment with a base station in a wireless mobile communication network using a Common Air Interface (CAI) message, It is an object of the present invention to provide a wireless environment diagnosis system and method using a smart phone in a wireless mobile communication environment that can display and analyze the wireless communication environment by using the measurement data in the smart phone.

In addition, the problem to be solved by the present invention is a smart phone in a wireless mobile communication environment that can diagnose and analyze the radio status and abnormal causes in response to all networks even in a mixed environment of mobile communication networks of various methods including the WiBro communication method An object of the present invention is to provide a wireless environment diagnosis system and method using the same.

Other objects and advantages of the invention will be described below and will be appreciated by the embodiments of the invention. Furthermore, the objects and advantages of the present invention can be realized by means and combinations indicated in the appended claims.

In order to achieve the above object, a system according to the present invention is used for diagnosing and analyzing a wireless environment including a cause of call truncation using CAI (Common Air Interface) messages transmitted / received during handoff between base stations in a wireless mobile communication network environment. A system, comprising: a receiving unit for receiving a CAI message measured by a radio environment measuring apparatus; A digital signal processing unit for controlling a wired or wireless connection with a smartphone and processing a signal to digitize the CAI message so that the smartphone can diagnose and display the wireless environment; And a transmitter configured to transmit the digitized CAI message to the smartphone under the control of the digital signal processor. And a smart phone installed with a wireless environment diagnostic analysis application having a display unit which is connected to the CAI message receiving processing device by wire or wirelessly and diagnoses and analyzes the CAI message transmitted from the device and displays the contents thereof.

The wireless environment diagnostic analysis application may include: an extracting unit extracting a message for analysis from the received CAI message; A division unit for dividing the extracted message into messages corresponding to CDMA, WCDMA, and WiBro, respectively; An analysis unit for determining a cause of call truncation by substituting a parameter and a value included in the extracted message to a condition causing call truncation according to a predetermined access network scheme; And a cause matter display processing unit which displays the cause matters according to the determination result of the analysis unit according to the CDMA network, the WCDMA network, and the WiBro network.

Preferably, the analyzing unit comprises: a CDMA analysis unit for determining the cause by substituting a message corresponding to the CDMA classified in the division unit to a call disconnect cause condition of a predetermined CDMA network; A WCDMA analysis unit for determining a cause by substituting a message corresponding to a WCDMA classified by the division unit into a call break cause condition of a predetermined WCDMA network; And a WiBro analyzer for determining a cause by substituting a message corresponding to a WiBro classified by the divider into a call cutting cause condition of a predetermined WiBro network.

Preferably, the system comprises a storage unit in which the pre-prepared measures according to the cause of each call disconnection is stored in text; And an action display unit for searching for and extracting the action corresponding to the cause of the call disconnection from the storage unit and displaying the action on the display unit of the smartphone. And a wireless state display processing unit for classifying the CAI message for CDMA, WCDMA, and WiBro, classifying and sorting the same message for display on the display unit of the smartphone.

According to the present invention, since the wireless environment with the base station in a wireless mobile communication network can be measured using a CAI (Common Air Interface) message, and the wireless communication environment can be analyzed and displayed using the measured data on a smart phone, In other words, even in the mixed environment of mobile communication network including WiBro communication method, it is possible to diagnose and analyze the radio status and the cause of the abnormality in response to all networks by using the smart phone, thus reducing the hardware and software of the wireless environment diagnosis system. Cost can be effectively developed in a short time, and because the use of a smart phone has the effect of improving the convenience of use.

1 is a block diagram of a wireless environment diagnostic analysis apparatus according to the prior art.
2 is a block diagram of a wireless environment diagnostic analysis system using a smart phone according to the present invention.
3 is a conceptual diagram illustrating items recorded in a storage unit of FIG. 2.
Figure 4 is a flow chart showing the procedure of the wireless environmental diagnostic analysis method using a smart phone according to an embodiment of the present invention.
5 is a flowchart illustrating a procedure of analyzing a cause in a first analysis module.
6 is a flowchart illustrating a procedure of analyzing a cause in a second analysis module.
7 is a flowchart illustrating a procedure of analyzing a cause in a third analysis module.
8 is a flowchart illustrating a procedure of analyzing a cause in a fourth analysis module.
9 is a flowchart illustrating a procedure of analyzing a cause in a fifth analysis module.
10 is a flowchart illustrating a procedure of analyzing a cause in a sixth analysis module.
11 is a flowchart illustrating a procedure of analyzing a cause in a seventh analysis module.
12 is a flowchart illustrating a procedure of analyzing a cause in an eighth analysis module.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

2 is a block diagram showing the main configuration of a wireless environment diagnostic system using a smart phone in a wireless mobile communication environment according to an embodiment of the present invention.

Referring to FIG. 2, the wireless environment diagnosis system using the smart phone of the present invention includes a CAI message receiving processing device 200 and a smart phone 300. The smartphone 300 receives the message data transmitted from the message receiving processing apparatus 200 and thereby displays an application module for diagnosing and analyzing a wireless environment, and a display unit 390 for displaying a diagnostic and analyzed wireless environment so that a user can view it. )

CAI message receiving processing device 200 is a wired or wireless connection (eg, Bluetooth connection) with the receiving unit 210 and the smart phone 300 for receiving the CAI message measured in the radio environment measurement equipment as in the prior art known Digital signal processor (Digital Signal Processor) to digitally process the CAI message and to perform a signal analysis to display on the display unit 390 of the smartphone by analyzing and analyzing the wireless environment in the smartphone 300 through the digitalization of the CAI message And a transmitter 225 for transmitting the digitized CAI message to the smartphone 300 by wire or wirelessly under the control of the DSP 220 and the digital signal processor 220.

The application module installed and driven in the smart phone 300 includes a CAI message data receiving unit 305 for receiving digital CAI message data transmitted by wire or wirelessly from the message receiving processing apparatus 200, and classifies messages for each network. The network network separating unit 315, a message extracting unit 320 for extracting a message used for cause analysis, a message sorting unit 330 for sorting and classifying messages, and a wireless environment, preferably call cutting based on the messages. A cause analyzing unit 340 for analyzing the cause, a measure searching unit 350 for reading the measures for the cause of the call cutting, and a display processing unit for outputting the contents to the screen of the display unit 390 of the smartphone 300 ( 360 and a storage unit 370 for recording and storing data.

The CAI message receiving unit 210 receives the CAI message data measured by a measuring instrument such as a radio environment measuring equipment as in the prior art. When receiving such message data, the data measured by the measuring instrument as described above may be directly connected to the device for transmission, or may be read by reading measurement data stored in a notebook or a PC.

Here, CAI stands for Common Air Interface and is a set of open standards that refer to the physical and logical characteristics linked between the base station and the mobile terminal. That is, CAI is an interface protocol for wireless communication, and is a standard standard for common wireless connection conditions such as frequency, communication method, and connection method between voice and non-voice mobile communication terminals and base stations. According to the CAI, the message transmitted and received between the terminal and the base station is measured by a measuring device, and the extracted data is received through the CAI message receiving unit 210.

The digital signal processor 220 converts the CAI message received through the CAI message receiver 210 into digital data to be read and processed by the smartphone 300. Reading and processing the CAI message in the smart phone 300 is a technique that can be easily understood by those skilled in the art through well-known techniques, and thus the detailed description thereof will be omitted.

The CAI message data transmitter 225 controls the CAI message converted into digital data by the digital signal processor 220 through a wireless connection such as Bluetooth or a wired connection under the control of the digital signal processor 220. 300).

In order for the CAI message data receiving unit 305 of the smartphone 300 to receive the digital CAI message from the message receiving processing apparatus 300, the wireless environment diagnosis application module (program) to be described below must first be downloaded and installed. Since a smartphone user is configured to download and install an application (application), the detailed description thereof will be omitted.

The message receiving processing device 200 may preferably be configured as a separate independent device. At this time, the message receiving processing device 200 is a connection port that can be directly connected to an external connection port (Port) or connector (Connector) of the smartphone 300 to transmit a digital CAI message to the smartphone 300 by wire or It may be provided with a connecting connector.

In addition, the message receiving processing apparatus 200 preferably includes a Bluetooth antenna for wirelessly transmitting the digital CAI message to the smartphone 300, which may protrude or be embedded outside in consideration of design aspects. Can be. It will be apparent to those skilled in the art that the Bluetooth antenna will be connected to the CAI message data transmitter 225.

The digital CAI message transmitted by the message reception processing apparatus 200 by wire or wirelessly is received by the CAI message data receiving unit 305. The CAI message data receiving unit 305 is connected to an external connection terminal (not shown) of a smartphone for receiving a digital CAI message transmitted by wire, and is connected to a smartphone for receiving a digital CAI message transmitted wirelessly. Associated with the antenna.

The digital CAI message received by the CAI message data receiver 305 is output to the access network separator 315 and the message aligner 330.

The access network separator 315 divides the message data received by the CAI message data receiver 310 into data related to CDMA, WCDMA, and WiBro schemes, respectively. By dividing the data in this way, the CDMA network, the WCDMA network and the WiBro network can be used to analyze the cause of the radio environment or the abnormal state.

In addition, the access network division unit 115 may also distinguish between CDMA and WCDMA schemes and access network schemes other than WiBro. Here, in another embodiment of the present invention, a CAI message received without distinguishing between CDMA, WCDMA, and WiBro may be used as it is. That is, in each case of CDMA, WCDMA, and WiBro, messages are used for both CDMA, WCDMA, or WiBro analysis without distinction, and are sent to the message extracting unit 320 to be described later.

The message extractor 320 extracts a message used for analysis from the message data received by the CAI message data receiver 310. The message used for the analysis includes a handoff completion message (HCM), a neighbor list update msg (NLUM), a pilot strength measurement msg (PSMM), a power measurement report message (PMRM), and a WCDMA BLER Info.

The above-mentioned messages are messages including radio environment information with the base station, radio state information, and information at the time of handoff between the mobile communication terminal and the base station, and are transmitted / received through the WCDMA radio channel or the CDMA traffic channel.

The HCM includes information such as a positive ACK, each PN offset in an active set, the NLUM includes update information of a list of neighboring base stations that a UE can hand off, and the PSMM arrives at an estimated E / I and PN. Information such as time, handoff release timer, and the like are included. In addition, PMRM includes frame information and error detection information. WCDMA BLER Info includes Chan [0] and Chan [1], where Chan [0] is a Dedicated Physical Control Channel (DPCCH) and Chan [1] is a DPDCH. It is defined as (Dedicated Physical Data Channel).

The cause analyzer 340 includes a CDMA analyzer 341, a WCDMA analyzer 342, and a WiBro analyzer 343. The CDMA analyzer 341 substitutes a message corresponding to the CDMA extracted by the message extractor 320 into a call disconnect cause condition of a predetermined CDMA network to determine a cause. In addition, the WCDMA analysis unit 342 determines the cause by substituting a message corresponding to the CDMA extracted by the message extraction unit 320 into a call disconnect cause condition of a predetermined WCDMA network. The WiBro analyzer 343 determines a cause by substituting a message corresponding to a WiBro extracted by the message extractor 320 into a call cutting cause condition of a predetermined WiBro network.

Thus, the cause analyzer 340 diagnoses the cause of each call truncation phenomenon by dividing into CDMA, WCDMA, and WiBro based on the messages extracted by the message extractor 320. Here, in another embodiment of the present invention, the cause analyzer 340 may be configured by one of the CDMA analyzer 141, the WCDMA analyzer 342, or the WiBro analyzer 343.

The cause analyzer 340 determines the cause of call breakage of CDMA, WCDMA, and WiBro as described below through a plurality of analysis means. First, the CDMA analysis means includes a first analysis means for determining a state in which a call is cut due to a missing base station neighbor, a second analysis means for determining a state in which a call is cut due to a lack of size (Search_Win_Size_N) of a neighbor search window, and a dominant one. Third analysis means for determining call truncation status due to no signal or lack of active search window size (Search_Win_Size_A), fourth analysis for determining call truncation status due to reverse link problem and lack of base station demodulation window size (Demod_Win_Length) Means and a fifth analysis means for determining call disconnection due to pilot pollution between the base station pilot signals, and a sixth analysis means for determining whether there is an error in the CDMA core network or core network hardware equipment. Determine the cause of call truncation in the CDMA network.

Next, the WCDMA analysis means includes a seventh analysis means for determining whether there is an abnormality in the WCDMA core network or core network hardware equipment, and an eighth analysis for determining whether neighboring information on the neighboring base station is missing from the base station being serviced. By means of means, the cause of call disconnection occurring in the WCDMA network is determined.

Here, the detailed description of each analysis means will be described in more detail through a cause analysis method to be described later. In addition, although the present invention provides a means for analyzing the cause of the call cutting in the eight cases that occur most frequently in everyday life, it can of course provide additional analysis means according to the cause of the call cutting in other cases. . In addition, here, neighbor (Neighbor) means a base station around the terminal can be handed off.

The message aligner 330 classifies and sorts the data received by the CAI message receiver 210 for the same message so that the wireless environment state can be easily viewed. The message aligner 330 distinguishes between reference PN information (Reference PN, PN Strength) and search PN information (PN, Pilot Strength) included in the PSMM to determine the handoff environment state. In addition, the delay information for the reference signal and the adjacent PN are distinguished so as to identify the delay state. In addition, the neighbor list message (NLM) received in the paging channel and the NLUM received in the call state are divided into reference PN information and neighbor information updated by the UE for Active Set PN so as to determine the neighbor list update state.

In addition, the handoff parameter for the Active PN and the reference PN included in the Handoff Direction Message (HDM) received in the call state is distinguished. The message aligning unit 330 may classify various types of messages, such as classifying the frame information and the error detection information included in the PMRM (Power Measurement Report Message) transmitted by the UE in a call state, in addition to the classification and sorting of the above messages. Function to distinguish and sort the parameters.

The action retrieval search unit 350 retrieves and reads the action according to the cause of the call cutting stored in the storage unit 370 which will be described later according to the result determined by the cause analysis unit 340. The above measures are stored as texts that can solve the problems caused by the call cutting cause. This is for the user to identify the cause of the call disconnection and at the same time provide the corresponding measures so that even a beginner can solve the problem as soon as possible.

The display processor 360 performs a function of processing text or graphics so that the user can check the information through the display display unit 390. In this case, the CDMA, WCDMA, and WiBro may be distinguished and processed to display the corresponding contents on the display unit 390. The information processed by the display processor 360 includes the cause 361 determined by the cause analyzer 340, the action 362 read by the action search unit 350, and the message alignment unit ( And a wireless state 363 that is reprocessed data information at 330. The user can easily grasp the cause of the call disconnection, take prompt measures, and understand the overall radio state by using the information displayed by the display processing unit 360 and displayed on the display unit 39 to effectively cope with a problem situation. Will be.

The storage unit 370 may be an internal memory such as a memory embedded in the smartphone 370 or a USB memory. The storage unit 370 records data used by the cause analyzer 340 and the action retrieval unit 350. 3 illustrates an example of items of data stored in a database in the storage unit 370.

Referring to FIG. 3, the storage unit 370 stores the CDMA related items, the WCDMA related items, and the WiBro related items. In the storage unit 370, a condition used in the cause analyzer 340 is recorded in advance, and cause and corresponding measures corresponding to the condition are recorded.

4 is a flowchart illustrating a procedure of a wireless environment diagnosis method implemented in a wireless environment diagnosis system using a smart phone in a wireless mobile communication environment according to an embodiment of the present invention.

First, the wireless environment diagnostic application configured as described above for the implementation of the method of the present invention should be installed in the smartphone 300 and be in a driving state (S202) (S204).

When the application is running in the smartphone 300 and a problem occurs on the network, data received through a measurement device receiving a CAI message at this time and place or data obtained by measuring a radio state through another path may be used. Received by the CAI message receiving unit 210 of the message receiving processing apparatus 200 (S100). The CAI message received by the CAI message receiving unit 210 is a kind of source message.

When the source message is received, the digital signal processor 220 converts the received CAI message into a digital CAI message, and the CAI message data transmitter 225 wires the converted digital CAI message to the smartphone 225. Or wirelessly transmit (S110) (S120).

When the digital CAI message is transmitted from the message receiving processing device 200 to the smartphone 300, the CAI message data receiving unit 305 receives the digital CAI message to the access network separating unit 315 and the message arranging unit 330. Transmit (S210).

The messages received by the CAI message data receiving unit 305 are classified according to the access network method, and are divided into messages used in CDMA, messages used in WCDMA, and messages used in WiBro. Here, the procedure for distinguishing between CDMA, WCDMA, and WiBro may be omitted, and CDMA, WCDMA, and WiBro related messages may be used alone (S220).

Next, the received and separated messages are analyzed and analyzed to determine the cause of a wireless environment, preferably, call disconnection. The cause is determined by assigning a message corresponding to CDMA to a call cutting cause condition of a predetermined CDMA network, and a cause is determined by assigning a message corresponding to WCDMA to a call cutting cause condition of a predetermined WCDMA network, and corresponding to WiBro. The cause is determined by substituting the message into the predetermined call break cause condition of the WiBro network.

Here, a plurality of analysis modules may be executed in order to analyze a cause, or only a user-specific analysis module may be separately executed to analyze only a corresponding cause. At this time, a detailed procedure of analyzing the cause will be described below with reference to FIGS. 5 to 12.

The call break cause analyzed in step S3 is displayed on the display display unit 390 of the smartphone 300 as text or graphic so that the user can easily grasp the cause. In this case, the output may be output after all of the plurality of analysis modules are executed, or when the user executes a desired analysis module, the cause may be output for each module in which the analysis is completed (S240).

Next, the search for the corresponding action items corresponding to the output cause information is searched for, and the searched corresponding action items are output. In this case, the pre-stored measures may be stored in correspondence with the analysis module, or may be stored in correspondence with the cause matters output as the result of the cause analysis (S250, S260).

Hereinafter, a procedure of performing call cutting cause analysis in step S230 will be described in detail with reference to FIGS. 5 to 12.

5 to 12 illustrate a procedure of analyzing a cause for each analysis module in the wireless environment diagnosis method according to an embodiment of the present invention.

FIG. 5 illustrates a procedure of analyzing a cause in a first analysis module. Referring to this figure, each module sequentially analyzes or is performed by a user in the step of analyzing the extracted message to be used for cause analysis. Only selected modules can be analyzed. When a request for execution of the first analysis module is requested according to the sequential order or the user's selection, the cause analysis is started (S11).

Next, it is determined whether a synchronous pilot exists in the HCM closest to the call disconnection time point among the extracted messages (S12).

If the condition of step S12 is satisfied, it is determined whether or not a synchronous pilot exists in the NLUM closest to the call disconnection time point (S13).

If the condition of step S13 is satisfied, it is determined that the cause of call disconnection is a missing base station neighbor (S14).

If the condition of the step S12 or the step S13 is not satisfied, the cause is determined as unknown. The discrepancy is a case where the cause is unknown by the analysis of the first analysis module (S15).

6 shows a procedure for analyzing a cause in a second analysis module. Referring to FIG. 6, when the sequential, user selection, or request for execution of the second analysis module is requested, cause analysis is started (S21).

Next, it is determined whether a synchronous pilot exists in the PSMM closest to the call disconnection time point among the extracted messages (S22).

If the condition of step S22 is satisfied, it is determined whether a synchronous pilot exists in the NLUM closest to the call disconnection time point (S23).

If the condition of step S23 is satisfied, it is determined that the cause of the call cutting is insufficient in the Naver search window size (S24).

If the condition of the step S22 or the step S23 is not satisfied, the cause is determined as unknown. The cause unknown is a case where the cause is unknown by the analysis of the second analysis module. (S25)

7 is a procedure for analyzing a cause in a third analysis module. Referring to FIG. 7, cause analysis starts when sequential, user selection, or request for execution of the third analysis module is performed (S31).

Next, it is determined whether a synchronous pilot exists in the NLUM closest to the call disconnection time point among the extracted messages (S32).

If the condition of step S32 is satisfied, it is determined whether a synchronous pilot exists in the PSMM closest to the call disconnection time point (S33).

If the condition of step S33 is satisfied, it is determined whether all of the pilot signals of the PSMM are less than or equal to Strength -10 (S34).

If the condition of step S34 is satisfied, it is determined that there is no signal prevailing in the cause of the call disconnection (S35).

In addition, if any one of the conditions of the step S32 to step S34 is not satisfied, it is determined that the cause is unknown. The cause unknown is a case where the cause is unknown by the analysis of the third analysis module. (S36)

8 shows a procedure of analyzing a cause in a fourth analysis module. Referring to FIG. 8, when the sequential, user selection, or request for execution of the fourth analysis module is requested, cause analysis is started (S41).

Next, it is determined whether a synchronous pilot exists in the NLUM closest to the call disconnection time point among the extracted messages (S42).

If the condition of step S42 is satisfied, it is determined whether a synchronous pilot exists in the PSMM closest to the call disconnection time point (S43).

If the condition of step S43 is satisfied, it is determined whether at least one of the pilot signals of the PSMM is equal to or greater than Strength -8 (S44).

If the condition of step S44 is satisfied, the cause of call disconnection is determined to be a reverse link problem (S45).

If any one of the conditions of the steps S42 to S44 is not satisfied, the cause is determined as unknown. The cause unknown is a case where the cause is unknown by the analysis of the fourth analysis module (S46).

9 is a procedure for analyzing a cause in a fifth analysis module. Referring to FIG. 9, cause analysis is started when sequential or user selection is requested to execute the fifth analysis module (S51).

Next, it is determined whether a synchronous pilot exists in the NLUM closest to the call disconnection time point among the extracted messages (S52).

If the condition of step S52 is satisfied, it is determined whether a synchronous pilot exists in the PSMM closest to the call disconnection time point (S53).

If the condition of step S53 is satisfied, it is determined whether the number of pilot signals of the PSMM is four or more.

If the condition of step S54 is satisfied, it is determined whether all of the pilot signals of the PSMM are less than or equal to Strength -10 (S55).

If the condition of step S55 is satisfied, it is determined whether a phenomenon in which the PSMM is repeated five or more times in a row occurs (S56).

If the condition of step S56 is satisfied, the cause of call disconnection is determined as interference between base station pilot signals.

In addition, if any one of the conditions of the step S52 to step S56 is not satisfied, it is determined that the cause is unknown. The cause unknown is a case where the cause is unknown by the analysis of the fifth analysis module (S58).

10 is a procedure for analyzing a cause in a sixth analysis module. Referring to FIG. 10, when the execution of the sixth analysis module is requested according to the sequential order or the user's selection, cause analysis is started.

Next, it is determined whether a synchronous pilot exists in the NLUM closest to the call disconnection time point among the extracted messages (S62).

If the condition of step S62 is satisfied, it is determined whether a synchronous pilot exists in the PSMM closest to the call disconnection time point (S63).

If the condition of step S63 is satisfied, it is determined whether at least one of the pilot signals of the PSMM is equal to or greater than Strength -8 (S64).

If the condition of step S64 is satisfied, it is determined whether the error_detected and pwr_measure_frames values in the PMRM are the same (S65).

If the condition of step S65 is satisfied, it is determined that the cause of call disconnection is an abnormality or failure of the CDMA core network or the core network hardware.

If any one of the conditions of the steps S62 to S65 is not satisfied, the cause is determined as unknown. The cause unknown is a case where the cause is unknown by the analysis of the sixth analysis module (S67).

11 is a procedure for analyzing a cause in a seventh analysis module. Referring to FIG. 11, when the execution of the seventh analysis module is requested according to the sequential order or the user's selection, the cause analysis is started (S71).

Next, it is determined whether the Active Dominant Ec / Io value is greater than or equal to -8 among the extracted messages (S72).

If the condition of step S72 is satisfied, it is determined whether both crc_rec and crc_error of Chan [0] and Chan [1] in the Down Link BLER Info are equal to or greater than zero (S73).

If the condition of step S73 is satisfied, it is determined whether crc_rec and crc_error of Chan [0] or Chan [1] in the Down Link BLER Info have the same value (S74).

If the condition of step S74 is satisfied, it is determined that the cause of call disconnection is an abnormality or failure of the WCDMA core network or core network hardware.

If any one of the conditions of the step S72 to step S74 is not satisfied, the cause is determined as unknown. The cause unknown is a case where the cause is unknown by the analysis of the seventh analysis module. (S76)

12 is a procedure for analyzing a cause in an eighth analysis module. Referring to FIG. 12, when the execution of the eighth analysis module is requested in a sequential order or a user's selection, cause analysis is started.

Next, it is determined whether Detected Dominant Ec / Io is equal to or greater than -10 in the extracted message at the same time as the call disconnection time (S82).

If the condition of step S82 is satisfied, it is determined whether the Active Dominant PSC and the Detected Dominant PSC do not coincide at the same time as the call disconnection time (S83).

If the condition of step S83 is satisfied, it is determined that the cause of call disconnection is a lack of base station neighbor information or a priority problem (S84).

If any one of the conditions of the steps S82 to S83 is not satisfied, the cause is determined as unknown. The cause unknown is a case where the cause is unknown by the analysis of the eighth analysis module. (S85)

The terms or words used in this specification and claims are not to be construed as limiting in their usual or dictionary meanings, and the inventors may appropriately define the concept of terms in order to best explain their invention in the best way possible. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

200: message receiving processing device 300: smartphone
305: CAI message data receiving unit 315: access network divider
330: message sorting unit 320: message extracting unit
340: cause analysis unit 350: action search unit
360: display processing unit 390: display unit

Claims (11)

A system for diagnosing and analyzing a wireless environment including cause of call dropping by using common air interface (CAI) messages transmitted / received during handoff between base stations in a wireless mobile communication network environment.
A receiving unit for receiving a CAI message measured by a wireless environment measuring device; A digital signal processing unit for controlling a wired or wireless connection with a smartphone and processing a signal to digitize the CAI message so that the smartphone can diagnose and display the wireless environment; And a transmitter configured to transmit the digitized CAI message to the smartphone under the control of the digital signal processor. And
And a smart phone installed with a wireless environment diagnostic analysis application having a display unit which is connected to the CAI message receiving processing device by wire or wirelessly and diagnoses and analyzes the CAI message transmitted from the device and displays the contents thereof.
The wireless environment diagnostic analysis application,
An extraction unit for extracting a message for analysis from the received CAI message; A division unit for dividing the extracted message into messages corresponding to CDMA, WCDMA, and WiBro, respectively; An analysis unit for determining a cause of call truncation by substituting a parameter and a value included in the extracted message to a condition causing call truncation according to a predetermined access network scheme; And a cause display unit for displaying the cause matters according to the determination result of the analysis unit according to the CDMA network, the WCDMA network, and the WiBro network.
The method of claim 1, wherein the analysis unit,
A CDMA analysis unit for determining a cause by substituting a message corresponding to a CDMA classified by the division unit into a call break cause condition of a predetermined CDMA network;
A WCDMA analysis unit for determining a cause by substituting a message corresponding to a WCDMA classified by the division unit into a call break cause condition of a predetermined WCDMA network; And
And a WiBro analyzer for determining the cause by substituting the message corresponding to the WiBro classified by the divider into a predetermined call cutting cause condition of the WiBro network.
The method according to claim 1 or 2,
A storage unit storing, in text, the measures according to each of the call cutting causes prepared in advance; And
And a measure display processing unit for retrieving and extracting the measure corresponding to the cause of the call disconnection from the storage unit and displaying the measure on the display unit of the smartphone.
The method according to claim 1 or 2,
And a wireless state display processing unit for classifying the CAI message for CDMA, WCDMA, and WiBro, classifying and sorting the same message for display on the display unit of the smart phone.
The method according to claim 1 or 2,
The message extractor extracts at least one of a power measurement report message (PMRM), a WCMDA BLER Info message, a handoff completion message (HCM), a neighbor list update msg (NLUM), and a pilot strength measurement msg (PSMM). System.
The method of claim 4, wherein the wireless state display processing unit,
Means for distinguishing and displaying pilots that interfere with a reference signal;
Means for distinguishing and displaying delay information for a reference signal and an adjacent PN;
Means for distinguishing and displaying neighbor information updated by the terminal;
Means for distinguishing and displaying handoff parameters; And
At least one of the means for indicating the quality of the forward link.
A system for diagnosing and analyzing a wireless environment including cause of call dropping by using common air interface (CAI) messages transmitted / received during handoff between base stations in a wireless mobile communication network environment.
A receiving unit for receiving a CAI message measured by a wireless environment measuring device; A digital signal processing unit for controlling a wired or wireless connection with a smartphone and processing a signal to digitize the CAI message so that the smartphone can diagnose and display the wireless environment; And a transmitter configured to transmit the digitized CAI message to the smartphone under the control of the digital signal processor. And
A smartphone having a wireless environment diagnostic analysis application having a display unit connected to the CAI message receiving processing device by wire or wirelessly and having a display unit for diagnosing and analyzing the CAI message transmitted from the device, and displaying the contents through a display unit;
The wireless environment diagnostic analysis application,
An extraction unit for extracting a message for analysis from the received CAI message; An analysis unit for determining a cause of call truncation by substituting a parameter and a value included in the extracted message to a condition causing call truncation according to a predetermined access network scheme; And a display processing unit for classifying the causes and measures according to the determination result of the analysis unit according to the CDMA network and displaying them on the display unit of the smartphone.
The method of claim 7, wherein the analysis unit,
A first analyzer determining whether a base station neighbor is missing based on the extracted message;
A second analyzing unit which determines whether the size of the neighbor search box is insufficient;
A third analyzer for determining whether a dominant signal exists or whether the size of the active search window is insufficient;
A fourth analyzer for determining whether a reverse link problem or a size of the demodulation window is insufficient;
A fifth analyzer for determining an interference deepening phenomenon between base station pilot signals; And
A sixth analyzing unit which determines whether there is an error in the CDMA core network or the core network hardware equipment; A system comprising at least one of the.
A system for diagnosing and analyzing a wireless environment including cause of call dropping by using common air interface (CAI) messages transmitted / received during handoff between base stations in a wireless mobile communication network environment.
A receiving unit for receiving a CAI message measured by a wireless environment measuring device; A digital signal processing unit for controlling a wired or wireless connection with a smartphone and processing a signal to digitize the CAI message so that the smartphone can diagnose and display the wireless environment; And a transmitter configured to transmit the digitized CAI message to the smartphone under the control of the digital signal processor. And
A smartphone having a wireless environment diagnostic analysis application installed therein that is connected to the CAI message reception processing device by wire or wirelessly, and analyzes the CAI message transmitted from the device and displays the contents through a display unit;
The wireless environment diagnostic analysis application,
An extraction unit for extracting a message for analysis from the received CAI message; An analysis unit for determining a cause of call truncation by substituting a parameter and a value included in the extracted message to a condition causing call truncation according to a predetermined access network scheme; And a display processing unit for classifying the causes and measures according to the determination result of the analysis unit according to the WCDMA network and displaying them on the display unit of the smartphone.
The method of claim 9, wherein the analysis unit,
A seventh analyzing unit determining whether there is an error in the WCDMA core network or the hardware equipment of the core network based on the extracted message; And
An eighth analyzing unit which determines whether neighbor information on a neighboring base station is missing from a base station being serviced; A system comprising at least one of the.
A system for diagnosing and analyzing a wireless environment including cause of call dropping by using common air interface (CAI) messages transmitted / received during handoff between base stations in a wireless mobile communication network environment.
A receiving unit for receiving a CAI message measured by a wireless environment measuring device; A digital signal processing unit for controlling a wired or wireless connection with a smartphone and processing a signal to digitize the CAI message so that the smartphone can diagnose and display the wireless environment; And a transmitter configured to transmit the digitized CAI message to the smartphone under the control of the digital signal processor. And
A smartphone having a wireless environment diagnostic analysis application installed therein that is connected to the CAI message reception processing device by wire or wirelessly, and analyzes the CAI message transmitted from the device and displays the contents through a display unit;
The wireless environment diagnostic analysis application,
An extraction unit for extracting a message for analysis from the received CAI message; An analysis unit for determining a cause of call truncation by substituting a parameter and a value included in the extracted message to a condition causing call truncation according to a predetermined access network scheme; And a display processing unit for classifying the causes and measures according to the determination result of the analysis unit according to the WiBro network and displaying them on the display unit of the smartphone.

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