WO2009084421A1 - 通信網の品質分析システム、品質分析装置、品質分析方法、及びプログラム - Google Patents
通信網の品質分析システム、品質分析装置、品質分析方法、及びプログラム Download PDFInfo
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- WO2009084421A1 WO2009084421A1 PCT/JP2008/072825 JP2008072825W WO2009084421A1 WO 2009084421 A1 WO2009084421 A1 WO 2009084421A1 JP 2008072825 W JP2008072825 W JP 2008072825W WO 2009084421 A1 WO2009084421 A1 WO 2009084421A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
- H04L41/5003—Managing SLA; Interaction between SLA and QoS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
- H04L41/5003—Managing SLA; Interaction between SLA and QoS
- H04L41/5019—Ensuring fulfilment of SLA
- H04L41/5025—Ensuring fulfilment of SLA by proactively reacting to service quality change, e.g. by reconfiguration after service quality degradation or upgrade
Definitions
- the present invention relates to a quality analysis system for a communication network, and more particularly to a quality analysis system for a communication network which analyzes call processing records of the communication network and estimates the cause of deterioration based on the bias of quality deterioration.
- FIG. 11 is a diagram showing the configuration of a mobile communication network which is an example of such a communication network.
- the mobile terminal 10 is connected to the wireless base station 30 via the wireless link 21 via the wireless link 20.
- the mobile terminal 12 is connected to the radio base station 31 via the radio link 22.
- the mobile terminal 13 is connected to the wireless base station 32 via the wireless link 24 via the wireless link 23.
- the radio base stations 30, 31, 32 are provided with radio cells 80, 81, 82, respectively, as an effective range of the radio link with the mobile terminal.
- the wireless base station control device 50 communicates with the mobile communication core network 60 via the wired link 43 and with the subordinate wireless base stations 30, 31 and 32 via the wired links 40, 41 and 42 for communication traffic and control. Send and receive traffic.
- the communication carrier acquires an index related to communication quality from the communication apparatus on the network side, and detects an abnormality in the operating condition of the communication network by comparing the index with a predetermined threshold.
- the network management unit 90 is connected to the radio base station control unit 50 and an exchange or server (not shown) inside the mobile communication core network 60 via the wired link 44 or 45.
- the various communication-related information is obtained as an indicator of communication quality from these network side communication devices.
- the telecommunications carrier monitors the failure of the communication device and the quality deterioration of the communication service based on the indicator of the communication quality acquired by the network management device 90 from the network communication device.
- the communication carrier implements improvement measures such as analyzing the cause in order to cope with the abnormality and changing operation parameters.
- Non-Patent Document 1 An example of such a communication quality indicator for a communication network is described in Non-Patent Document 1.
- Non-Patent Document 1 in a radio base station control apparatus of a mobile communication network based on the specifications of 3rd Generation Partnership Program (3GPP), a trial of establishing a radio access bearer as an indicator of communication quality to be acquired periodically for each radio cell
- 3GPP 3rd Generation Partnership Program
- Such anomaly detection using the communication quality indicator acquired from the network side communication device utilizes control traffic transmitted and received via the wired and wireless links between the mobile terminal and the wireless base station controller. Therefore, for example, when the mobile terminal is located in a blind spot of radio waves in the radio cell and the quality of the radio link with the radio base station is poor, transmission and reception of control traffic becomes unstable, so it occurs in the mobile terminal It is difficult for the network side to detect deterioration in communication quality. Further, even when the deterioration of the communication quality is local, the influence is hard to be detected on the network side because the influence is hard to appear in the indicator of the communication quality. Therefore, in order to catch the deterioration of the communication quality which is difficult to detect on the network side as described above, the communication carrier may use a claim received from a user of the communication service in combination.
- FIG. 12 is a flow chart for explaining an example of communication quality analysis processing.
- an indicator of communication quality is acquired from a network-side communication device such as a wireless base station controller that manages a wireless cell to be monitored or a wireless base station (step S100). It evaluates (step S101).
- a network-side communication device such as a wireless base station controller that manages a wireless cell to be monitored or a wireless base station (step S100). It evaluates (step S101).
- step S102 when abnormality can be confirmed in the index, it is determined that the problem is the entire wireless cell or the network communication device (step S102).
- step S103 when an abnormality can not be confirmed in the index, it is confirmed whether a claim is generated in the wireless cell. If no claim occurs, the wireless cell is determined to be normal (step S104).
- Step S105 the measurement result of the radio wave relating to the wireless cell or the estimation result of the radio wave propagation simulator is obtained (step S105), and it is confirmed whether the point of occurrence of the claim is located in the blind spot of the radio wave. (Step S106).
- step S107 when the point of occurrence of the claim is located in the blind spot of the radio wave, it is determined that the cause of the claim is deterioration of the wireless link (step S107). On the other hand, if the point of occurrence of the claim is not located in the insensitive place, it is determined that the quality is degraded due to other local problems such as interference degradation (step S108).
- the telecommunications carrier captures deterioration in communication quality that can be detected on the network side from the indicator of communication quality acquired from the network side communication device, and claims on deterioration in communication quality that is difficult to detect on the network side from the user. Capture and analyze. JP-A-11-261471 3GPP TS 32.403, "Telecommunication management; Performance Management (PM); Performance measurements-UMTS and combined UMTS / GSM (Release 5)", 2004.
- the problem to be solved by the present invention is to solve the above-mentioned problems, and the network deterioration is detected due to the abnormality of the communication quality indicator acquired from the network communication device. It determines the local quality degradation that occurs in a limited area under the side communication device and the quality degradation over a wide range, and for a wide range of quality degradation, the upper network side communication device that accommodates the network side communication device It is an object of the present invention to provide a technology capable of identifying network side communication devices causing deterioration as far back as possible.
- Another object of the present invention is to provide a technique capable of determining whether the cause of the quality degradation is in the terminal equipment or in the communication area where the user is located, against the quality degradation of the communication network in which the quality degradation concentrates on a specific user. .
- the present invention for solving the above problems is a quality analysis system of a communication network in which communication devices are hierarchically connected, and recording means for recording processing contents in call processing of the communication device of the communication network;
- the distribution calculation means calculates the distribution of the deterioration amount and calculates the distribution degree of this distribution, and uses the calculated distribution degree of the distribution deterioration and the belonging relationship information indicating the terminals, communication devices and communication areas constituting the respective layers. It is characterized in that it has a deterioration cause estimation means for estimating a terminal, a communication device or a communication area which is a deterioration cause of the communication quality.
- the present invention for solving the above problems is a quality analysis device of a communication network in which communication devices are hierarchically connected, and a detection unit that detects deterioration of communication quality of the communication network, and the detection unit.
- the quality deterioration is determined by using the processing contents in the call processing of the communication device of the communication network to obtain the distribution of the amount of quality deterioration for each hierarchy of the communication network, and the deviation degree of this distribution Terminal, communication device or communication area that is the cause of deterioration of the communication quality using the bias calculation means of the above, the calculated degree of the bias, and the information of memberships indicating the respective layers, communication devices and communication areas.
- degradation factor estimation means for estimating.
- the present invention for solving the above-mentioned problems is a method of analyzing the quality of a communication network in which communication devices are hierarchically connected, wherein the detecting step of detecting deterioration of communication quality of the communication network, and the detecting step When deterioration of the communication quality is detected, the quality deterioration is determined by using the processing contents in the call processing of the communication device of the communication network to obtain the distribution of the amount of quality deterioration for each hierarchy of the communication network, and the deviation degree of this distribution Terminal, communication device or communication area which is the cause of deterioration of communication quality using the bias calculation step, the calculated degree of bias, and information of memberships indicating the respective layers, communication devices and communication areas And a deterioration cause estimation step of estimating
- the present invention for solving the above-mentioned problems is a program of a quality analysis device of a communication network to which communication devices are hierarchically connected, wherein the program causes the quality analysis device to deteriorate the communication quality of the communication network.
- the distribution of the quality deterioration amount for each hierarchy of the communication network is calculated using the processing contents in the call processing of the communication device of the communication network.
- the communication quality is determined using the deviation calculation means of quality deterioration to obtain the deviation degree of the distribution, and the calculated degree of deviation and the belonging relationship information indicating the terminals, the communication devices and the communication area constituting the layers. It is characterized in that it functions as a degradation cause estimation means for estimating a terminal, a communication device or a communication area which is a degradation cause.
- the network side communication device constituting the communication network by analyzing the recorded contents of the call processing of the network side communication device to obtain the distribution of the quality deterioration amount for each network side communication device, communication area or terminal.
- the network side communication apparatus, communication area or terminal which is the cause of deterioration of the communication quality is estimated from the degree of deviation of the distribution of the quality deterioration amount based on the communication area and the belonging relationship of the terminal.
- the quality analysis system of the communication network is limited to the area under the control of the communication device on the network side against the quality deterioration of the communication network detected due to the abnormality of the communication quality index acquired from the communication device on the network side.
- the local quality degradation that occurs in the network and the extensive quality degradation are determined, and the broad-scale quality degradation is caused by the degradation to the upper network side communication device that accommodates the network side communication device.
- Network side communication devices can be identified.
- FIG. 1 is a diagram showing an example of the configuration of a quality analysis system in the case of a mobile communication network in the present invention. It is a block diagram which shows the structure of the quality analysis system of the communication network by the 1st Embodiment of this invention. It is a figure showing an example of a display example of an analysis result by a 1st embodiment of the present invention. It is a flowchart explaining operation
- FIG. 1 is a diagram showing an example of an apparatus configuration of a communication network which is a technology related to the present application. It is a flow chart explaining an example of analysis processing of communication quality which is art related to this application.
- FIG. 1 is a diagram showing the configuration of the quality analysis system of the present invention in the case of a mobile communication network.
- the quality analysis system of the present invention includes mobile terminals 10 to 14, radio base stations 30 to 32, a radio base station control device 50, a network management device 90, and a quality analysis device 100.
- the mobile terminal 10 is connected to the wireless base station 30 via the wireless link 21 via the wireless link 20.
- the mobile terminal 12 is connected to the radio base station 31 via the radio link 22.
- the mobile terminal 13 is connected to the wireless base station 32 via the wireless link 24 via the wireless link 23.
- the radio base stations 30, 31, 32 are provided with radio cells 80, 81, 82, respectively, as an effective range of the radio link with the mobile terminal.
- a plurality of network side communication devices are hierarchically connected like a tree structure to constitute a communication network.
- the network management device 90 is shown in the inside of the mobile communication core network 60 information related to anomalous disconnection occurring in the call processing performed in each of the radio base stations 30 to 32 which is the termination of the communication network. It is received from the non-exchange station or server unit and the network side communication unit of the radio base station control unit 50 and recorded as a log. In addition, various information related to communication is acquired from the network side communication device as an indicator of communication quality via the wired link 44 or 45.
- the various information related to communication means, for example, between a device on the mobile communication core network and the radio base station controller 50, between the radio base station controller 50 and each of the radio base stations 30 to 32, or each radio Information and control traffic when data is transmitted and received between the base stations 30-32 and the mobile terminals 10-14.
- the wireless base station control device 50 communicates with the mobile communication core network 60 via the wired link 43 and with the subordinate wireless base stations 30, 31 and 32 via the wired links 40, 41 and 42 for communication traffic and control. Send and receive traffic.
- FIG. 2 is a block diagram showing the configuration of a quality analysis system of a communication network as a first embodiment of the present invention.
- Quality analysis apparatus 100 has input unit 108, quality indicator evaluation unit 101, call processing log analysis unit 107, and result display control unit 106.
- the input unit 108 specifies an analysis operation such as a communication network to be analyzed and an analysis period.
- the quality indicator evaluation unit 101 acquires from the network management device 90 an indicator of communication quality regarding the network communication device to be analyzed, and evaluates whether or not an abnormality occurs in the communication network.
- the result display control unit 106 controls to display the analysis result from the call processing log analysis unit 107 described later on a display device such as a CRT.
- the call processing log analysis unit 107 collects and analyzes call processing logs from the network management device 90.
- the call processing log analysis unit 107 includes a call processing log collection unit 102, a quality deterioration bias calculation unit 103, a quality deterioration cause estimation unit 104, and a network configuration DB 105.
- the call processing log collection unit 102 acquires a call processing log from the network management device 90.
- the acquired call processing log records abnormal disconnection that occurred during call processing between the mobile terminal and the radio base station, and it is possible to obtain information on communication failure from this log.
- An example of such a call processing log is generally called a call processing alarm log.
- the radio base station controller 50 or network as a time-series log with information such as the date and time of occurrence of the call processing alarm log abnormal disconnection, the communication apparatus related to the abnormal disconnection, the location of the call processing at which the abnormal disconnection occurred and the reason for the occurrence. It is stored in a recording device provided in the management device 90.
- Such a technique is described, for example, in Japanese Patent Application Laid-Open No. 11-261471.
- the bias on quality deterioration calculation unit 103 uses the call processing log acquired by the call processing log collection unit 102 to use network side communication devices in the same hierarchy within the communication network to be analyzed (for example, each radio base station or radio The number of failures in communication per unit time (failure frequency) is determined for each base station controller or each terminal, and the degree of deviation of the distribution is calculated.
- the quality degradation cause estimation unit 104 estimates the degradation cause of the communication quality with reference to the calculation result of the quality degradation bias calculation unit 103 and the network configuration DB 105 described later.
- the network configuration DB 105 includes information indicating network communication devices belonging to each layer of the communication network, the connection relationship between the network communication devices inside the communication network, and in the case of a wireless communication network, a wireless base station and a wireless cell or cell. And information such as an attribution relationship between the mobile terminals.
- the analysis result of the call processing log analysis unit 107 is input to the result display control unit 106, and the result display control unit 106 displays the analysis result on a display device such as a CRT.
- FIG. 3 is a diagram showing a display example of the analysis result of the call processing log that the result display control unit 106 causes the display device to display.
- the analysis result 300 of the call processing log is a display example of the analysis result on the quality deterioration detected in the wireless cell of the wireless communication network.
- the analysis result 300 of the call processing log graphically shows the result of obtaining the failure frequency of communication for each mobile terminal in the radio cell from the call processing log. Also, the result of quantitatively evaluating the degree of concentration of quality deterioration due to communication failure on a specific mobile terminal is shown as the degree of bias of quality deterioration. Further, the result of estimating the cause of the quality deterioration in the quality deterioration cause estimation unit 104 is shown.
- FIG. 4 is a flow chart for explaining the operation of the quality analysis system for a communication network according to this embodiment. It is assumed that the network management device 90 has already stored an index indicating communication quality and a log of call processing.
- the network communication device (or communication area) to be analyzed and the analysis period are designated and input through the input unit 108 (step S200).
- the quality evaluation unit 101 receives the input information input through the input unit 108, acquires an indicator of the communication quality to be analyzed from the network management device 90 (step S201), and determines the threshold value and the size determined in advance. It is evaluated whether the indicator of the communication quality is abnormal or not by comparing (step S202).
- the result display control unit 106 When the indicator of the communication quality is normal, the result display control unit 106 outputs the analysis result “no abnormality” to the display device and ends (step S203).
- Step S204 when the quality evaluation unit 101 evaluates that the communication quality indicator is abnormal in step S202, the call processing log related to the analysis target is acquired from the network management apparatus 90 via the call processing log collection unit 102 ( Step S204).
- the bias of quality deterioration calculation unit 103 uses the acquired call processing log to calculate the unit time for each network communication device (or communication area, terminal) under the network communication device (or communication area) to be analyzed. Find the number of communication failures (failure frequency) in
- the bias of quality deterioration calculation unit 103 compares the sum of the failure frequency of the network communication devices (or communication areas, terminals) under the network communication device (or communication area) to be analyzed with the threshold value determined in advance. (Step S216).
- Step S203 When the sum total of failure frequency is smaller than a predetermined threshold value, the result display control unit 106 is notified, and the result display control unit 106 receives this and outputs the analysis result “no abnormality” to the display device, and the process ends (Step S203).
- the quality deterioration bias calculation unit 103 calculates the degree of distribution of failure frequency distribution of the network communication device (or communication area, terminal) (step S205). .
- the mother set at the time of calculating the degree of distribution distribution is the network communication device (or communication area, terminal) under the network communication device (or communication area) to be analyzed.
- the analysis object is a wireless communication network
- all wireless cells under the wireless base station are a mother set
- all mobile terminals under the wireless cell are a population I assume.
- the case of using the Haffindale coefficient is described as an example of the index for quantifying the bias of quality deterioration, but other indicators such as entropy may be used for quantifying the bias of quality deterioration. Absent.
- the Haffindale coefficient is determined by equation (1).
- the parameter fi is the ith parameter in the set of N parameters.
- the value range of the Haffindal coefficient is 1 / N to 1, and the value is closer to 1 as the deviation of the distribution is larger, and the value is closer to 1 / N as the distribution is uniform.
- the Hafindal coefficient is used as the failure frequency of communication generated in the i-th network communication device (or communication area, terminal) in N network communication devices (or communication areas, terminals) in the parameter fi. It is determined that the quality degradation is biased to a specific network side communication device (or communication area, terminal) when the Haffindal coefficient exceeds a predetermined threshold. ... (Equation 1)
- the deterioration cause estimation unit 104 evaluates whether the quality deterioration is biased to a specific network communication device (or communication area or terminal) (step S206), and if it is biased, the result display control unit 106 analyzes As a result, "local degradation" is output to the display device, and the process ends (step S207).
- the network side communication device (or upper layer) that accommodates the network side communication device (or communication area, terminal) to be analyzed is a mother set at the time of calculating bias.
- the communication area is changed to the communication area (step S208), the bias of quality deterioration is calculated again (step S205), and a network communication apparatus (or communication area) in which the quality deterioration is biased is searched.
- the search is performed on the search targets of all the layers, and when there is a bias, the analysis result is displayed on the display each time, and when there is no bias finally, the display is made to display that effect. .
- the limited portion under the network side communication device Local quality degradation that occurs in the area and broad quality degradation, and for a wide range of quality degradation, degradation occurs retroactively to the upper network side communication device (or communication area) that accommodates the network side communication device.
- the network side communication device (or communication area) that is the cause can be identified.
- FIG. 5 is a block diagram showing the configuration of a quality analysis system for a communication network as a second embodiment of the present invention.
- the quality analysis system 100 in the present embodiment includes the wireless area analysis unit 113 that evaluates the radio wave quality in the area where the communication quality is degraded. Have. Although the analysis result of the wireless area analysis unit 113 is different in that the deterioration cause estimation unit 104 and the result display control unit 106 are input, the other configuration is the same as that of the first embodiment.
- the wireless area analysis unit 113 includes a degradation area estimation unit 111, a radio wave quality evaluation unit 112, a customer information DB 109, and a wireless area design DB 110.
- the degradation area estimation unit 111 acquires, from the degradation cause estimation unit 104, the terminal identification information of the user whose quality degradation is concentrated when local quality degradation occurs in the wireless cell of the wireless communication network. Identify the location of When specifying the position of the user, the customer information DB 109 is referred to as necessary.
- the radio wave quality evaluation unit 112 evaluates the radio wave quality in the peripheral area of the position identified by the degradation area estimation unit 111. At that time, reference is made to the wireless area design DB 110 in which the design information of the wireless area such as the measurement result of the radio wave quality of the area or the estimation result by simulation is stored.
- the evaluation result of the radio wave quality in the wireless area analysis unit 113 is input to the deterioration cause estimation unit 104. Further, the analysis result of the wireless area analysis unit 113 is input to the result display control unit 106 and displayed on a display device such as a CRT.
- FIG. 6 is a drawing showing a display example of analysis results of call processing logs that the result display control unit 106 causes the display device to display in the second embodiment of the present invention.
- the configuration of the present embodiment is different from that of the first embodiment in that the analysis result 309 of the wireless area is displayed.
- the received power of the mobile terminal at the position specified by the deterioration area estimation unit 111 is shown for the mobile terminal of the user whose quality degradation is concentrated. Also, for the area (radio area 307) around the radio cell in which local quality degradation occurs, geographical distribution of radio wave quality, buildings, etc., and distribution of mobile terminals in which quality degradation is concentrated It is displayed superimposed.
- FIG. 7 is a flow chart for explaining the operation of the quality analysis system for a communication network according to the present embodiment.
- the operation of the present embodiment differs in that processing relating to analysis of a wireless area is added after step S207 of the first embodiment.
- step S207 when the analysis target is a wireless communication network, following step S207, it is evaluated whether or not the quality degradation is biased to a specific mobile terminal (step S209), and the mobile terminal having the specific quality degradation is If not biased to the end of the process.
- the degradation area estimation unit 111 specifies the position of the mobile terminal where the quality degradation is concentrated (step S210).
- the position of the mobile terminal can be specified by GPS (Global Positioning System), wireless base station positioning, or the like, the position is used.
- GPS Global Positioning System
- the customer information DB 109 is referred to, and a place where the user of the mobile terminal is likely to stay, such as a residence, a place of work, or a belonging school of the customer is located inside the wireless cell. In that case, the location is substituted as the position of the mobile terminal.
- the radio wave quality evaluation unit 112 evaluates the radio wave quality around the radio cell whose quality is degraded. At that time, the radio wave quality of the wireless area is evaluated by comparing the measurement result of the received power obtained from the wireless area design DB 110 and the estimation result by simulation with the required quality of the communication device such as the mobile terminal and the wireless base station. (Step S211). Further, the radio wave quality of the radio area, the geographical distribution of buildings, etc., and the distribution of mobile terminals of users with concentrated quality deterioration are output to the result display control unit 106 (step S215).
- the deterioration cause estimation unit 104 compares the position of the mobile terminal identified in step S210 with the result of the radio wave quality evaluated in step S211 (step S212). If the radio wave quality around the mobile terminal is poor, the result is The display control unit 106 outputs the analysis result “deterioration of radio wave quality” to the display device, and the process ends (step S213).
- the result display control unit 106 outputs the analysis result “problem of the terminal device” to the display device and ends (step S214).
- whether the cause of the quality degradation is in the terminal device or in the communication area in which the user is located for the quality degradation of the communication network in which the quality degradation is concentrated on a specific user Can be determined.
- FIG. 8 is a block diagram showing the configuration of a quality analysis system for a communication network as a third embodiment of the present invention.
- the quality analysis system 100 in the present embodiment detects a claim occurring in the communication network to analyze call processing log and wirelessly.
- the configuration is the same as that of the second embodiment, except that the claim analysis unit 116 which starts the analysis of the radio wave quality of the area is included.
- the claim analysis unit 116 includes a claim DB 114 and a claim detection unit 115.
- the claim detection unit 115 refers to the claim DB 114 to check whether or not a claim is generated in the communication network to be analyzed, and when the claim is generated, the call processing log analysis unit 107 is activated to execute the communication Analyze call processing logs for the network. Also, the radio area analysis unit 113 is activated to evaluate the radio wave quality around the point of complaint occurrence. These analysis results are input to the result display control unit 106 and displayed on a display device such as a CRT.
- FIG. 9 is a drawing showing a display example of analysis results displayed on the display device by the result display control unit 106 in the third embodiment of the present invention.
- the configuration of the present embodiment is different from that of the second embodiment in that the analysis result of the claim is displayed.
- the analysis result 300 of the call processing log indicates the correspondence between the mobile terminal inside the wireless cell and the mobile terminal of the user who has brought the claim when the frequency of communication failure is obtained for each mobile terminal inside the wireless cell. There is.
- the analysis result 309 of the wireless area indicates the correspondence between the mobile terminal in which the quality deterioration is concentrated and the mobile terminal of the user who has sent the complaint, and the point at which the complaint occurs.
- FIG. 10 is a flow chart for explaining the operation of the quality analysis system for a communication network according to the present embodiment.
- the operation of the present embodiment is different from that of the second embodiment in that steps S217 to S221, which are operations relating to analysis of a claim, are added.
- step S202 when it is determined in step S202 that there is no abnormality in the indicator of communication quality, it is checked whether or not a complaint from the user is generated in the communication network to be analyzed with reference to the complaint DB 114. (Step S217).
- step S203 If no claim occurs, the analysis result “no abnormality” is output to the result display control unit 106, and the process ends (step S203).
- step S216 if the sum of communication failure frequency for each mobile terminal obtained from the call processing log is smaller than a predetermined threshold value, a claim is made to investigate whether there is any quality deterioration that can not be detected on the network side.
- the radio wave quality around the occurrence point is evaluated (step S218), and the result display control unit 106 outputs the evaluation result to the display device (step S219).
- the cause display control unit 106 regards the cause of the claim occurrence as the user's subjective problem, and the result display control unit 106 outputs the analysis result “no abnormality” to the display device and ends ( Step S203).
- Step S221 if the radio wave quality around the complaint point is poor, the cause of the claim is regarded as deterioration of radio wave quality, and the result display control unit 106 outputs the analysis result “deterioration of radio wave quality” to the display device and ends ( Step S221).
- communication is performed at the time of claim occurrence for the area around the point of claim occurrence so that the administrator of the communication network can easily evaluate the objectivity of the claim received from the user. It is possible to determine the presence or absence of users suffering quality deterioration as well as the geographical distribution.
- the above-described terminal of the present invention can be configured by hardware as is apparent from the above description, but can also be realized by a computer program.
- the processor that operates with the program stored in the program memory realizes the same function and operation as the above-described embodiment.
- the network side communication device constituting the communication network by analyzing the recorded contents of the call processing of the network side communication device to obtain the distribution of the quality deterioration amount for each network side communication device, communication area or terminal.
- the network side communication apparatus, communication area or terminal which is the cause of deterioration of the communication quality is estimated from the degree of deviation of the distribution of the quality deterioration amount based on the communication area and the belonging relationship of the terminal.
- the quality analysis system of the communication network is limited to the area under the control of the communication device on the network side against the quality deterioration of the communication network detected due to the abnormality of the communication quality index acquired from the communication device on the network side.
- the local quality degradation that occurs in the network and the extensive quality degradation are determined, and the broad-scale quality degradation is caused by the degradation to the upper network side communication device that accommodates the network side communication device.
- Network side communication devices can be identified.
- the recorded contents of the call processing of the network side communication apparatus are analyzed, and the position of the network side communication apparatus, communication area or terminal where deterioration of communication quality is concentrated is specified.
- the radio wave quality around the position of the communication device, communication area or terminal is evaluated, and the cause of deterioration of communication quality is narrowed down from the evaluation result of the radio wave quality.
- the quality analysis system of the communication network determines whether the cause of the quality deterioration is in the terminal device or in the communication area in which the user is located with respect to the quality deterioration of the communication network in which the quality deterioration concentrates on a specific user. it can.
- the recorded contents of the call processing of the network side communication apparatus are analyzed, and the presence or absence of users suffering deterioration of communication quality at the time of claim occurrence and the geographical distribution are determined
- the radio wave quality around the point where the claim occurs is evaluated to estimate the cause of the claim.
- the quality analysis system of the communication network can support the management of the communication network to easily evaluate the objectivity of the complaint received from the user.
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Abstract
Description
を備えたことを特徴とする。
20~24 無線リンク
30~32、306 無線基地局
40~46 有線リンク
50 無線基地局制御装置
60 移動通信コア網
70 外部網
80~82 無線セル
90 網管理装置
100 通信網の品質分析システム
101 品質指標評価部
102 呼処理ログ収集部
103 品質劣化の偏り算出部
104 劣化原因推定部
105 網構成DB
106 結果表示制御部
107 呼処理ログ分析部
108 入力部
109 顧客情報DB
110 無線エリア設計DB
111 劣化エリア推定部
112 電波品質評価部
113 無線エリア分析部
114 クレームDB
115 クレーム検出部
116 クレーム分析部
300 呼処理ログの分析結果
304 建物
307 無線エリア
308 電波品質
309 無線エリアの分析結果
310 クレーム発生地点
(第1の実施の形態)
本発明を実施するための第1の実施の形態について図面を参照して詳細に説明する。
(第1の実施の形態の構成)
図1は、移動体通信網の場合の本発明の品質分析システムの構成を示した図面である。
次に、図4を参照して、本発明による第1の実施の形態の動作について詳細に説明する。
・・・(数1)
次に、本発明を実施するための第2の実施の形態について図面を参照して詳細に説明する。
(第2の実施の形態の構成)
図5は本発明の第2の実施の形態として、通信網の品質分析システムの構成を示したブロック図である。
次に、図7を参照して、本発明の実施の形態の動作について詳細に説明する。
図7は、本実施の形態による通信網の品質分析システムの動作を説明するフローチャートである。本実施の形態の動作は、第1の実施の形態のステップS207以後に無線エリアの分析に関する処理が追加される点が異なる。
次に、本発明を実施するための第3の実施の形態について図面を参照して詳細に説明する。
(第3の実施の形態の構成)
図8は本発明の第3の実施の形態として、通信網の品質分析システムの構成を示したブロック図である。
次に、図10を参照して、本実施の形態の動作について詳細に説明する。
図10は、本実施の形態による通信網の品質分析システムの動作を説明するフローチャートである。本実施の形態の動作は、第2の実施の形態の動作に加えてクレームの分析に関する動作であるステップS217~ステップS221が追加される点が異なる。
Claims (22)
- 通信装置が階層的に接続されている通信網の品質分析システムであって、
前記通信網の通信装置の呼処理における処理内容を記録する記録手段と、
前記通信網の通信品質の劣化を検出する検出手段と、
前記検出手段によって通信品質の劣化が検出された場合、前記記録された呼処理の処理内容を用いて前記通信網の階層ごとの品質劣化量の分布を求め、この分布の偏り度合いを求める品質劣化の偏り算出手段と、
前記算出した偏り度合いと前記各階層を構成する端末、通信装置ならびに通信エリアを示す帰属関係の情報とを用いて、通信品質の劣化原因である端末、通信装置または通信エリアを推定する劣化原因推定手段と
を有することを特徴とする通信網の品質分析システム。 - 前記品質劣化の偏り算出手段は、ハーフィンダール係数またはエントロピーを用いて前記品質劣化量の分布の偏り度合いを評価することを特徴とする請求項1に記載の通信網の品質分析システム。
- 前記品質劣化の偏り算出手段は、
前記品質劣化量の分布において、特定の端末、通信装置または通信エリアに通信品質の劣化が集中していない場合に、前記端末、前記通信装置または前記通信エリアを収容する上位の階層に属する通信装置または通信エリアを対象として前記品質劣化量の分布の偏り度合いを求める
ことを特徴とする請求項1に記載の通信網の品質分析システム。 - 前記検出手段が通信品質の劣化を検出しなかった場合、ユーザからのクレームを用いて通信品質の劣化を検出する手段と、
前記処理内容から通信品質の劣化が集中している端末、通信装置または通信エリアの位置を特定する品質劣化エリア推定手段と、
前記推定した品質劣化エリアの位置もしくは前記クレームが示す品質劣化の発生地点周辺の電波品質を評価する電波品質評価手段と
を有し、
前記劣化原因推定手段は、前記電波品質の評価結果から通信品質の劣化原因を推定することを特徴とする請求項1に記載の通信網の品質分析システム。 - 前記劣化エリア推定手段は、
前記通信品質の劣化が集中している端末の位置情報が得られない場合に、通信事業者が保有する顧客情報から該端末を保有するユーザの所在地に関わる情報を得て該端末の位置を推定する
ことを特徴とする請求項4に記載の通信網の品質分析システム。 - 前記劣化原因推定手段は、
前記通信品質の劣化が特定の端末に集中し、且つその端末が電波品質の悪い場所に位置する場合には劣化原因を電波品質の劣化と判定し、前記通信品質の劣化が特定の端末に集中し、且つ前記端末が電波品質の良い場所に位置する場合に劣化原因を端末機器の不具合と判定する
ことを特徴とする請求項4に記載の通信網の品質分析システム。 - 前記劣化原因推定手段は、
前記クレームが示す品質劣化の発生地点周辺の通信装置または通信エリアにおける通信の失敗頻度が予め定めた閾値以下であり、且つクレームの発生位置が電波品質の悪い場所であればクレームの発生原因を電波品質の劣化と判定し、前記クレームが示す品質劣化の発生地点周辺の通信装置または通信エリアにおける通信の失敗頻度が予め定めた閾値以下であり、且つクレームの発生位置が電波品質の良い場所であればクレームの発生原因をユーザの主観的な問題と判定することを特徴とする請求項4に記載の通信網の品質分析システム。 - 通信装置が階層的に接続されている通信網の品質分析装置であって、
前記通信網の通信品質の劣化を検出する検出手段と、
前記検出手段によって通信品質の劣化が検出された場合、前記通信網の通信装置の呼処理における処理内容を用いて、前記通信網の階層ごとの品質劣化量の分布を求め、この分布の偏り度合いを求める品質劣化の偏り算出手段と、
前記算出した偏り度合いと前記各階層を構成する端末、通信装置ならびに通信エリアを示す帰属関係の情報とを用いて、通信品質の劣化原因である端末、通信装置または通信エリアを推定する劣化原因推定手段と
を備えたことを特徴とする品質分析装置。 - 前記品質劣化の偏り算出手段は、ハーフィンダール係数またはエントロピーを用いて前記品質劣化量の分布の偏り度合いを評価することを特徴とする請求項8に記載の品質分析装置。
- 前記品質劣化の偏り算出手段は、
前記品質劣化量の分布において、特定の端末、通信装置または通信エリアに通信品質の劣化が集中していない場合に、前記端末、前記通信装置または前記通信エリアを収容する上位の階層に属する通信装置または通信エリアを対象として前記品質劣化量の分布の偏り度合いを求める
ことを特徴とする請求項8に記載の品質分析装置。 - 前記検出手段が通信品質の劣化を検出しなかった場合、ユーザからのクレームを用いて通信品質の劣化を検出する手段と、
前記処理内容から通信品質の劣化が集中している端末、通信装置または通信エリアの位置を特定する品質劣化エリア推定手段と、
前記推定した品質劣化エリアの位置もしくは前記クレームが示す品質劣化の発生地点周辺の電波品質を評価する電波品質評価手段と
を有し、
前記劣化原因推定手段は、前記電波品質の評価結果から通信品質の劣化原因を推定することを特徴とする請求項8に記載の品質分析装置。 - 前記劣化エリア推定手段は、
前記通信品質の劣化が集中している端末の位置情報が得られない場合に、通信事業者が保有する顧客情報から該端末を保有するユーザの所在地に関わる情報を得て該端末の位置を推定する
ことを特徴とする請求項11に記載の品質分析装置。 - 前記劣化原因推定手段は、
前記通信品質の劣化が特定の端末に集中し、且つその端末が電波品質の悪い場所に位置する場合には劣化原因を電波品質の劣化と判定し、前記通信品質の劣化が特定の端末に集中し、且つ前記端末が電波品質の良い場所に位置する場合に劣化原因を端末機器の不具合と判定する
ことを特徴とする請求項11に記載の品質分析装置。 - 前記劣化原因推定手段は、
前記クレームが示す品質劣化の発生地点周辺の通信装置または通信エリアにおける通信の失敗頻度が予め定めた閾値以下であり、且つクレームの発生位置が電波品質の悪い場所であればクレームの発生原因を電波品質の劣化と判定し、前記クレームが示す品質劣化の発生地点周辺の通信装置または通信エリアにおける通信の失敗頻度が予め定めた閾値以下であり、且つクレームの発生位置が電波品質の良い場所であればクレームの発生原因をユーザの主観的な問題と判定することを特徴とする請求項11に記載の品質分析装置。 - 通信装置が階層的に接続されている通信網の品質分析方法であって、
前記通信網の通信品質の劣化を検出する検出ステップと、
前記検出ステップにおいて通信品質の劣化が検出された場合、前記通信網の通信装置の呼処理における処理内容を用いて、前記通信網の階層ごとの品質劣化量の分布を求め、この分布の偏り度合いを求める品質劣化の偏り算出ステップと、
前記算出した偏り度合いと前記各階層を構成する端末、通信装置ならびに通信エリアを示す帰属関係の情報とを用いて、通信品質の劣化原因である端末、通信装置または通信エリアを推定する劣化原因推定ステップと
を有することを特徴とする品質分析方法。 - 前記品質劣化の偏り算出ステップは、ハーフィンダール係数またはエントロピーを用いて前記品質劣化量の分布の偏り度合いを評価することを特徴とする請求項15に記載の品質分析方法。
- 前記品質劣化の偏り算出ステップは、
前記品質劣化量の分布において、特定の端末、通信装置または通信エリアに通信品質の劣化が集中していない場合に、前記端末、前記通信装置または前記通信エリアを収容する上位の階層に属する通信装置または通信エリアを対象として前記品質劣化量の分布の偏り度合いを求める
ことを特徴とする請求項15に記載の品質分析方法。 - 前記検出ステップで通信品質の劣化が検出されなかった場合、ユーザからのクレームを用いて通信品質の劣化を検出するステップと、
前記処理内容から通信品質の劣化が集中している端末、通信装置または通信エリアの位置を特定する品質劣化エリア推定ステップと、
前記推定した品質劣化エリアの位置もしくは前記クレームが示す品質劣化の発生地点周辺の電波品質を評価する電波品質評価ステップと
を有し、
前記劣化原因推定ステップは、前記電波品質の評価結果から通信品質の劣化原因を推定することを特徴とする請求項15に記載の品質分析方法。 - 前記劣化エリア推定ステップは、
前記通信品質の劣化が集中している端末の位置情報が得られない場合に、通信事業者が保有する顧客情報から該端末を保有するユーザの所在地に関わる情報を得て該端末の位置を推定する
ことを特徴とする請求項18に記載の品質分析方法。 - 前記劣化原因推定ステップは、
前記通信品質の劣化が特定の端末に集中し、且つその端末が電波品質の悪い場所に位置する場合には劣化原因を電波品質の劣化と判定し、前記通信品質の劣化が特定の端末に集中し、且つ前記端末が電波品質の良い場所に位置する場合に劣化原因を端末機器の不具合と判定する
ことを特徴とする請求項18に記載の品質分析方法。 - 前記劣化原因推定ステップは、
前記クレームが示す品質劣化の発生地点周辺の通信装置または通信エリアにおける通信の失敗頻度が予め定めた閾値以下であり、且つクレームの発生位置が電波品質の悪い場所であればクレームの発生原因を電波品質の劣化と判定し、前記クレームが示す品質劣化の発生地点周辺の通信装置または通信エリアにおける通信の失敗頻度が予め定めた閾値以下であり、且つクレームの発生位置が電波品質の良い場所であればクレームの発生原因をユーザの主観的な問題と判定することを特徴とする請求項18に記載の品質分析方法。 - 通信装置が階層的に接続されている通信網の品質分析装置のプログラムであって、前記プログラムは前記品質分析装置を、
前記通信網の通信品質の劣化を検出する検出手段と、
前記検出手段によって通信品質の劣化が検出された場合、前記通信網の通信装置の呼処理における処理内容を用いて、前記通信網の階層ごとの品質劣化量の分布を求め、この分布の偏り度合いを求める品質劣化の偏り算出手段と、
前記算出した偏り度合いと前記各階層を構成する端末、通信装置ならびに通信エリアを示す帰属関係の情報とを用いて、通信品質の劣化原因である端末、通信装置または通信エリアを推定する劣化原因推定手段と
して機能させることを特徴とするプログラム。
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KR101516510B1 (ko) | 2010-12-28 | 2015-05-04 | 텔레호낙티에볼라게트 엘엠 에릭슨(피유비엘) | 오동작 단말을 검출하는 방법 및 장치 |
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JP2019176322A (ja) * | 2018-03-28 | 2019-10-10 | Kddi株式会社 | エリア品質劣化要因推定装置及び推定方法 |
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Also Published As
Publication number | Publication date |
---|---|
EP2237596A1 (en) | 2010-10-06 |
JP5267818B2 (ja) | 2013-08-21 |
US20100284293A1 (en) | 2010-11-11 |
JPWO2009084421A1 (ja) | 2011-05-19 |
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