JP2010239239A - Radio base station, radio communication system, fault notification method, and radio base station program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that an analyzer device is required in order to promptly report associated information about fault occurrence or communication quality, but there is a problem in costs in fault occurrence when the analyzer device is installed on a job site for investigation each time when the fault occurs. <P>SOLUTION: The radio base station comprises: a communication data analyzing means for analyzing real-time communication data due to a radio communication terminal to calculate real-time communication quality; a quality determining means for determining whether or not the calculated real-time communication quality is deteriorated from a predetermined level; and a sending means for sending first communication quality associated information to a predetermined destination in the case where the quality determining means determines that it is deteriorated. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a radio base station, a radio communication system, a failure notification method, and a radio base station program that accommodate various radio communication terminals such as a mobile phone equipped with a wireless LAN (Local Area Network) function by radio communication.

  In recent years, wireless LAN terminals capable of voice over wireless LAN (VoWLAN) are becoming widespread in the market, and are widely used in corporate offices, medical care, education, and the like. The most serious problem in a network that realizes such a voice call using a wireless LAN is a case where a failure in communication quality deterioration occurs in real-time communication such as a voice call between specific wireless LAN terminals in the wireless LAN.

  As a related technique for such failure analysis, there is Omnipek of WildPackets Inc., which is a wireless LAN analyzer device (see Non-Patent Document 1). This Omnipek intercepts a packet on the wireless LAN, analyzes its contents in accordance with the IEEE 802.11 standard, outputs the result, and outputs advice based on the analysis.

  In addition, as a wireless communication system that supports a plurality of transmission rates, information on radio field strength, R value, and transmission / reception traffic is acquired from a radio communication terminal as an operation during communication connection. And a predetermined quality threshold are compared to confirm the wireless communication state (see, for example, Patent Document 1).

JP 2007-251660 A

"WildPackets", [online], WildPackets Inc., [March 9, 2009 search], Internet <URL: http://www.wildpackets.com>

However, the failure analysis method according to Non-Patent Document 1 described above has a problem that failure analysis in consideration of causes other than the wireless network layer (layer) cannot be performed.
In addition, since it is necessary to investigate the analyzer device at the site every time a failure occurs, there is a problem in cost when the failure occurs. Furthermore, it may be physically difficult to install the analyzer device in the user's environment due to security problems. In addition, when the cause of communication quality degradation is radio wave interference due to temporary interference sources, it is difficult to identify the cause of failure unless the packet at the time of failure is acquired and analyzed. there were.

  Further, in the above-mentioned Patent Document 1, the wireless communication state is confirmed from the information of the radio wave intensity, the R value, and the transmission / reception traffic so that the predetermined communication quality can be maintained even if the transmission rate changes from moment to moment. It was something that was going to be done, and it wasn't even taken into account to quickly analyze the occurrence of failures.

  The present invention has been made in view of such a situation, and does not require the trouble of installing an analyzer device in the field, and is a wireless base that can promptly notify related information about the occurrence of a failure and communication quality It is an object to provide a station, a wireless communication system, a failure notification method, and a wireless base station program.

  In order to achieve this object, a radio base station according to the present invention is a radio base station that accommodates radio communication terminals by radio communication, and calculates real-time communication quality by analyzing real-time communication data from the radio communication terminals. Communication data analysis means, quality determination means for determining whether or not the real-time communication quality calculated by the communication data analysis means has deteriorated from a predetermined level, and Sending means for sending one communication quality related information to a predetermined destination.

  A radio communication system according to the present invention includes the above-described radio base station according to the present invention and a system control apparatus that performs various controls in communication at the radio base station.

  The failure notification method according to the present invention is a failure notification method in a radio base station that accommodates a radio communication terminal by radio communication, and is a communication that calculates real-time communication quality by analyzing real-time communication data by the radio communication terminal. A data analysis step, a quality determination step for determining whether or not the real-time communication quality calculated by the communication data analysis step has deteriorated from a predetermined level; A transmission step of transmitting communication quality related information to a predetermined destination.

  The radio base station program according to the present invention is a radio base station program that accommodates radio communication terminals by radio communication, and is a communication that calculates real-time communication quality by analyzing real-time communication data by the radio communication terminals. When it is determined that the data analysis process, the quality determination process for determining whether the real-time communication quality calculated by the communication data analysis process has deteriorated from a predetermined level, and the quality determination process have been deteriorated, the first A transmission process for transmitting communication quality related information to a predetermined transmission destination is executed by the computer of the radio base station.

  As described above, according to the present invention, it is possible to promptly notify related information about the occurrence of a failure and communication quality without requiring the trouble of installing the analyzer device in the field.

It is a block diagram which shows roughly the radio base station of embodiment of this invention. It is a block diagram which shows the structural example of the wireless LAN system by embodiment of this invention. 2 is a block diagram illustrating a configuration example of a radio base station 1. FIG. 2 is a block diagram illustrating a configuration example of a wireless LAN terminal 2. FIG. It is a flowchart which shows the operation | movement after the communication start in the wireless base station 1 of this embodiment. It is a flowchart which shows the operation | movement after the communication start by the wireless LAN terminal 2 in this embodiment. It is a figure which shows an example of the audio | voice quality determination tables 17a and 24a. It is a figure which shows the example of a warning notification screen by the wireless LAN terminal.

  Next, an embodiment in which a radio base station, a radio communication system, a failure notification method, and a radio base station program according to the present invention are applied to a wireless LAN (Local Area Network) system will be described in detail with reference to the drawings. .

First, an outline of the present embodiment will be described.
In this embodiment, the wireless base station detects quality deterioration of real-time communication such as voice communication performed by the wireless LAN terminal, and notifies the network administrator's terminal and wireless LAN terminal of the data at the time of quality deterioration and the quality deterioration factor. To do.

Next, embodiments of the present invention will be described with reference to the drawings.
First, an outline of the wireless LAN (Local Area Network) system according to the present embodiment will be described. FIG. 1 is a block diagram illustrating a configuration example of a wireless base station 1 and a wireless LAN terminal (wireless communication terminal) 2 in the present embodiment.

  As shown in FIG. 1, in this embodiment, a plurality of wireless base stations 1 (other wireless base stations are not shown) are provided, and a plurality of wireless LAN terminals 2 (other wireless LAN terminals are not shown). Is configured so that wireless communication is possible.

  In the present embodiment, when the wireless base station 1 detects a deterioration in voice quality (real-time communication quality) of the wireless LAN terminal 2 that performs voice communication (real-time communication), the communication quality information is stored, or the administrator's mail It is characterized by notifying an address or a wireless LAN terminal of the occurrence of a failure and related information.

  The wireless base station 1 is a wireless base station that controls wireless communication connection with the wireless LAN terminal 2, a communication data acquisition unit 101 that constantly acquires and stores wireless communication data with the wireless LAN terminal 2, and communication data acquisition Detailed information and voice quality [R value: ITU-T (International Telecommunication Union-Telecommunication Standardization Sector) G. A communication quality notification unit 102 that notifies the administrator's e-mail address and the wireless LAN terminal 2 of the definition.

  Here, the R value is the G.D. This is a value calculated from sound quality, delay, echo, and the like according to the E-model calculation formula 107. E-model is a tool for estimating various parameters that determine the conversation quality of a telephone service using a handset.

The R value is calculated by measuring individual parameters of the R value, Ro: line noise, transmitter / receiver room noise, subscriber line noise, Is: OLR (loudness), side tone, quantization distortion, Id: speaker Echo, listener echo, total delay, Ie, eff: low bit rate coding, packet / cell loss,
R = Ro-Is-Id-Ie, eff + A
It is done with the formula. A in the above formula is an item representing convenience, and is a specified value (A = 0).

  Regarding the calculation of the R value, G.I. By using the BASIC source code of 107 Annex C [5], the calculation can be performed only by preparing an R value parameter. A tool for calculating the R value simply by inputting the R value parameter is also commercially available.

  The communication data acquisition unit 101 always acquires information for calculating an R value from transmission / reception packets of the wireless LAN terminal 2 in the wireless base station 1. Further, the wireless base station 1 calculates the voice quality (R value) for each wireless LAN terminal 2 belonging to the own station.

  The communication quality notification unit 102 performs notification by transmitting an e-mail including quality deterioration information to a pre-registered administrator's e-mail (E-mail) address. In the notification to the wireless LAN terminal 2, a management packet [Beacon Information Elements, etc.] standardized by IEEE (Institute of Electrical and Electronic Engineers) 802.11 is used.

  The communication quality related information for the administrator (first communication quality related information) to be included in the e-mail transmitted to the administrator address includes terminal specifying information for specifying the wireless LAN terminal 2 in which the quality degradation has occurred, voice communication partner Destination identification information that identifies the quality, time when quality degradation occurred, R value, quality degradation factors (sound quality, delay, echo, packet loss, etc. that most affected voice quality degradation), quality degradation Communication data at least.

For example, an IP (Internet Protocol) address, a MAC (Media Access Control) address, an ESSID (Extended Service Set Identifier), a telephone number, or the like can be used as the terminal identification information or the destination identification information.
In addition, as a factor of the above quality degradation, which factor has the most influence on the voice quality degradation is determined by the deterioration of the R value among the parameters used when calculating the R value as described above. The parameter that has the most influence on the determination is determined, and a known determination method may be used.

  The communication quality related information (second communication quality related information) for terminals transmitted as a notification to the wireless LAN terminal 2 includes terminal specifying information (such as a MAC address) for specifying the wireless LAN terminal 2 and an R value. At least included.

  The beacon is a frame that is periodically transmitted to notify the function supported by the operating wireless base station 1 to the wireless LAN terminal 2 and the Basic Service Area (BSA) ID (SSID: Service Set IDentifier). It is.

  The wireless LAN terminal 2 includes a voice quality determination unit 201 that determines whether the voice quality is equal to or lower than a threshold based on the communication quality related information for the terminal received from the wireless base station 1, and a voice quality determination unit 201 A connection permission determining unit 202 that determines permission / non-permission of connection to another wireless base station 1 based on the determination result.

The voice quality determination unit 201 performs determination using the voice quality (R value) notified from the radio base station 1.
Based on the determination result of the audio quality determination unit 201, the connection permission determination unit 202 requests connection to the other radio base station 1 when the audio quality is equal to or lower than a predetermined threshold, and the acquired audio quality is When there is no other wireless base station that is equal to or less than the threshold and can be connected, warning information is notified.

As described above, this embodiment enables quick failure analysis by automatically transmitting the communication quality related information for the administrator to the administrator's e-mail address when voice quality deterioration occurs. It is said.
In addition, regarding the wireless LAN terminal 2, it is possible to avoid quality degradation of voice communication by determining connection to the radio base station 1 based on voice quality information (R value).

Next, the configuration of the wireless LAN system according to the present embodiment will be described.
2 is a block diagram showing a configuration example of the wireless LAN system according to the embodiment of the present invention, FIG. 3 is a block diagram showing a configuration example of the wireless base station 1, and FIG. 4 is a configuration example of the wireless LAN terminal 2. FIG.

  As shown in FIG. 2, the wireless LAN system 100 includes wireless LAN terminals 2a, 2b, 2c,..., Wireless base stations 1a, 1b,. A system control device 3 that performs various controls in communication with the radio base station 1 is provided, and can communicate with the file server 4 and the network administrator 5.

2, the wireless LAN system 100 has wireless base stations (AP: access points) 1a, 1b,... Connected to the system control device 3, and the wireless base stations 1a, 1b,. The wireless LAN terminals 2a, 2b, 2c,.
The system control device 3 performs various controls in communication as the wireless LAN system 100, such as handover between a plurality of wireless base stations 1a, 1b,.

  As shown in FIG. 3, the wireless base station 1 includes an antenna 10 and a wireless communication unit 11 for performing wireless communication with the wireless LAN terminals 2a, 2b, 2c,. Real-time communication such as a voice communication and the like, and a wired communication unit 12 for performing wired communication with the control unit 13 and a control unit 13 [for example, a CPU (Central Processing Unit)] that controls the entire wireless base station 1 , A communication data acquisition unit 15 that acquires communication data of the wireless LAN terminals 2a, 2b, 2c,..., And a timer 16 that adds time information to the acquired communication data. A communication data analysis unit 17 that analyzes the communication quality of real-time communication based on the acquired communication data, a storage unit 18 that stores the acquired communication data, and the like, and stores the quality of the real-time communication And voice quality storage unit 18a, the analysis result to notify the administrator, and is configured with an e-mail transmitting unit 19 that stores the e-mail address of the administrator. The communication data analysis unit 17 is provided with a voice quality determination table 17a.

  The wireless LAN terminals 2a, 2b, 2c,... Have an antenna 20 for performing wireless communication with the wireless base stations 1a, 1b,. A wireless communication unit 21, a communication control unit 22 that performs communication control such as transmission output by the wireless communication unit 21, a control unit 23 (for example, a CPU) that controls the entire wireless LAN terminal 2, a wireless base station 1a, For storing voice quality notified from 1b,..., A display unit 25 for displaying various information, an operation input unit 26 for receiving operation input from a user, and a voice call The receiver 27 and the transmitter 28 are provided. The storage unit 24 is provided with a voice quality determination table 24a.

  Note that the processing operations of the communication data acquisition unit 101 and the communication quality notification unit 102 of the radio base station 1 shown in FIG. 1 are realized by the control unit 13 of the radio base station 1 executing a program stored in the storage unit 18. Is possible. Further, the processing operations of the voice quality determination unit 201 and the connection permission determination unit 202 of the wireless LAN terminal 2 shown in FIG. 1 are realized by the control unit 23 of the wireless LAN terminal 2 executing a program stored in the storage unit 24. Is possible.

FIG. 5 is a flowchart showing the operation of the wireless base station 1 after the communication with the wireless LAN terminal 2 is established. FIG. 6 is a flowchart showing the operation of the wireless LAN terminal 2 after the communication with the wireless base station 1 is established.
7 is a diagram showing an example of the voice quality judgment table 17a of the wireless base station 1 and the voice quality judgment table 24a of the wireless LAN terminal 2, and FIG. 8 is an example of a warning notification screen by the wireless LAN terminal 2 of FIG. FIG.
With reference to FIG. 2 to FIG. 8, an operation when the radio base station 1 detects voice communication quality deterioration will be described. 6 and 8 is realized when the control unit 23 of the wireless LAN terminal 2 executes a program stored in the storage unit 24, and the process shown in FIG. 5 is performed by the control of the wireless base station 1. This is realized by the unit 13 executing the program stored in the storage unit 18.

  First, the operation of the wireless base station 1 after communication with the wireless LAN terminal 2 is established will be described with reference to the flowchart of FIG.

  When the wireless LAN terminal 2 connected to the wireless base station 1 starts communication, the real-time communication determination unit 14 of the wireless base station 1 determines whether or not the communication data of the wireless LAN terminal 2 includes real-time communication such as voice communication. (Real-time communication determination means). When performing voice communication (step S1 in FIG. 5; Yes), the control unit 13 causes the communication data acquisition unit 15 to start acquiring communication data of the wireless LAN terminal 2 (step S2 in FIG. 5). If the communication of the wireless LAN terminal 2 is other than voice communication (step S1 in FIG. 5; No), this flow ends without acquiring communication data.

  In the real-time communication determination unit 14, presence / absence of a predetermined signaling protocol or RTP (Real-time Transport Protocol: stipulated in RFC 3550 of IETF) packet as a criterion for determining whether or not the real-time communication in step S <b> 1 is included. Is constantly monitored. As this signaling protocol, for example, SIP (Session Initiation Protocol; defined by RFC 3261 of IETF (Internet Engineering Task Force)), H.264, and the like. 323 (specified by H.323 recommendation of ITU-T (International Telecommunication Union-Telecommunication Standardization Sector)), MGCP (specified by RFC 2705 of IETF), or the like can be used.

  The acquired communication data is given a time stamp from the timer 16 and then stored in the storage unit 18 (step S3 in FIG. 5). In addition to storing in the storage unit 18, communication data may be transmitted to the file server 4 via the system control device 3 and stored.

  With respect to the recorded communication data, the communication data analysis unit 17 calculates an R value (calculated from sound quality, delay, echo, etc. according to the E-model calculation formula) as communication quality of the wireless LAN terminal 2 (communication data analysis) Means) and stored in the wireless quality storage unit 18a (step S4 in FIG. 5).

  FIG. 7 shows an example of the voice quality determination tables 17a and 24a for determining the voice quality evaluation according to the R value. As shown in FIG. 7, the voice quality determination table stores R values [0 to 100] and voice quality evaluations [lowest to highest] in association with each other.

  In the voice quality determination table, if the R value is “greater than 80, 100 or less”, the voice quality evaluation is “highest”, and if the R value is “greater than 60, 80 or less”, the voice quality evaluation is If it is “high” and the R value is “greater than 40, 60 or less”, the voice quality evaluation is “medium”, and if the R value is “greater than 20, 40 or less”, the voice quality evaluation is If “low (failure degree: small)” and the R value is “0 or more and 20 or less”, it is stored that the voice quality evaluation is “minimum (failure degree: high)”.

  The control unit 13 of the wireless LAN base station 1 refers to the voice quality determination table 17a as shown in FIG. 7 to determine whether the voice quality (R value) is below a predetermined threshold (step S5 in FIG. 5) (quality). Determination means). In this determination, for example, it is determined that a voice communication failure has occurred when the voice quality evaluation is “low” or less, and the voice quality is below the threshold depending on whether or not the voice quality evaluation has decreased to a predetermined level. Determine whether or not.

  When the voice quality (R value) of the wireless LAN terminal 2 is equal to or lower than a predetermined threshold (step S5 in FIG. 5; No), the e-mail transmission unit 19 includes the voice quality (R value) etc. The communication quality related information is described in an e-mail and transmitted to a pre-registered administrator address. Moreover, it is also possible to attach and transmit the communication data at the time of quality deterioration stored in the storage unit 18 at the time of transmission of the e-mail. To the wireless LAN terminal 2, terminal-related communication quality related information (MAC address, R value, etc. of the wireless LAN terminal 2) is transmitted using an IEEE management packet (step S6 in FIG. 5) (sending means).

  When the voice quality of the wireless LAN terminal 2 is higher than a predetermined threshold (step S5 in FIG. 5; Yes), after notifying the communication quality related information for the terminal, the wireless LAN terminal 2 notifies the other wireless base station 1 If the handover or communication has not ended (step S7 in FIG. 5; No), acquisition of communication data is continued (step S2 in FIG. 5). When the wireless LAN terminal 2 has finished handover or communication (step S7 in FIG. 5; Yes), acquisition of communication data is ended.

  Next, the operation during voice communication of the wireless LAN terminal 2 after starting a call will be described with reference to the flowchart of FIG.

  After the call is started, the control unit 23 always acquires the communication quality related information for the terminal notified from the radio base station 1 by the radio communication unit 21 (step S11 in FIG. 6). When the MAC address notified in the communication quality related information for the terminal matches the MAC address of the control unit 23 (step S12 in FIG. 6; Yes), the voice quality included in the communication quality related information for the terminal It is determined whether or not (R value) is larger than a quality threshold predetermined in the voice quality determination table 24a (step S13 in FIG. 6).

  When the voice quality is equal to or lower than a predetermined quality threshold value (step S13 in FIG. 6; No), the control unit 23 inquires whether other radio base stations can be connected (step S14 in FIG. 6). When the voice quality is higher than a predetermined threshold, the acquisition of the communication quality related information for the terminal is continued (step S11 in FIG. 6).

  When the voice quality is equal to or lower than the threshold value and the handover to another radio base station 1 is possible (step S15 in FIG. 6; Yes), the control unit 23 hands over the communication between the radio LAN terminal 2 and the radio base station 1 ( FIG. 6 step S16).

  When there is no other wireless base station 1 that can be handed over (step S15 in FIG. 6; No), the control unit 23 continues the communication with the wireless base station 1 as it is, but the voice quality is affected. 8 is displayed on the display unit 25 (for example, “*** warning *** The sound quality has deteriorated due to packet loss!”) Or the speaker of the receiver unit 27 as shown in FIG. The user is notified by voice (step S17 in FIG. 6).

  As described above, in the above-described embodiment, when a failure occurs in voice communication of the wireless LAN terminal 2 by using information in the system, communication data, or the like received by the wireless LAN base station 1, a failure occurs. Administrators can quickly confirm the cause of failure without requiring environmental investigation.

  In the present embodiment, the information (communication data) in the system is used during a call of the wireless LAN terminal 2 to automatically ensure the voice quality when a voice communication failure occurs ( Handover and warning to the user).

  Furthermore, in the present embodiment, when the voice quality falls below a predetermined threshold value, the wireless LAN terminal 2 outputs a warning sound / warning display to move to the optimum wireless base station 1 for handover. Can be prompted, or the user can be prompted not to move further if handover is not desired.

Further, the failure analysis method according to the prior art has a problem that failure analysis in consideration of causes other than the wireless network layer (layer) cannot be performed. Specifically, in a wireless network in which packets are encrypted, such as a wireless LAN using a security system such as WPA (Wi-Fi Protected Access) or WPA2, it is not possible to analyze packets at the IP layer or higher. was there.
On the other hand, in the present embodiment, the voice quality is confirmed using the R value, and when the R value is equal to or less than a predetermined threshold, the communication quality related information for the administrator [terminal identification information of the wireless LAN terminal 2] And the other party identification information of the communication partner, the time when the quality degradation occurred, the R value, the factor of quality degradation (the one that has the most influence on the voice quality degradation among sound quality, delay, echo, etc.)] Send it in the e-mail addressed to it.
For this reason, there is no need to install a wireless LAN analyzer device or the like in the field when a failure occurs, and the administrator and the user can grasp various related information about the communication quality when the quality of voice communication is deteriorated. Thus, the cause of quality degradation can be easily confirmed. Further, it is possible to quickly analyze a failure without affecting the user's environment and without extra costs.

  As described above, the wireless LAN system according to the present embodiment includes the wireless base station that controls the wireless communication connection with the wireless LAN terminal, and the system control device that performs various controls in the communication at the wireless base station. And

  In the wireless LAN terminal according to the present embodiment, when a decrease in received radio waves is detected during a call at the start of belonging to a wireless base station, at the start of a call, etc., a plurality of wireless base stations are searched and A received radio signal strength (RSSI) and a signal to noise ratio (SNR) are compared, and an optimal radio base station is selected and connected.

  The wireless base station according to the present embodiment is a wireless base station that controls wireless communication connection with a wireless LAN terminal and wired communication connection with a wired terminal, and communication that constantly acquires communication data transmitted from the wireless terminal or wired terminal. Data acquisition means, real-time communication determination means for determining the presence or absence of voice communication from communication data acquired by the communication data acquisition means, communication data analysis means for analyzing the quality of voice communication determined by the real-time communication determination means, It is characterized by comprising communication quality information notifying means (sending means) which is means for notifying the administrator of communication quality information analyzed by the communication data analyzing means.

  It is preferable that the communication data acquisition unit described above constantly acquires communication data of the wireless LAN terminal in the wireless base station.

  The real-time communication determination unit described above preferably selects voice communication from a signaling protocol (for example, SIP, H.323, MGCP, etc.) or an RTP packet.

  It is preferable that the communication data analysis unit described above always obtains an R value indicating the voice quality of voice communication by the real-time communication determination unit.

  The above voice quality is preferably obtained by constantly calculating the voice quality of each wireless LAN terminal belonging to the wireless base station.

  Based on the communication data analysis means, the communication information notification means described above allows / disallows information notification to the administrator and the wireless LAN terminal depending on whether or not the voice quality of voice communication is below a predetermined threshold. E-mail is preferably used as a notification method to the administrator, and a management packet (Beacon, Probe, etc.) standardized by IEEE 802.11 is used as a notification method to the wireless LAN terminal. It is preferable to use it.

  The wireless LAN terminal includes connection permission determining means for determining permission / non-permission for connection to another wireless base station based on communication information notified from the wireless base station.

  The connection permission determining means described above requests connection to another connectable radio base station when the acquired radio communication state is equal to or less than a predetermined threshold, and there is no other connectable radio base station. In this case, it is preferable to notify the warning information to the user of the wireless LAN terminal.

  In this way, in the present embodiment, when quality degradation occurs in real-time communication such as voice communication, it is possible to quickly respond to a failure by notifying detailed information to the administrator's e-mail address. In addition, by notifying the wireless LAN terminal of quality degradation, it is possible to select a wireless base station that is optimal for voice communication.

Each of the above-described embodiments is a preferred embodiment of the present invention, and the present invention is not limited to this, and various modifications can be made based on the technical idea of the present invention.
For example, in the above-described embodiment, when the voice quality is equal to or lower than the predetermined threshold value, it has been described that the e-mail is sent to the network administrator's mail address. However, the network administrator can check with the terminal device. As long as it can be notified, the method is not limited to this method. For example, information to be displayed on the screen may be transmitted or notified by voice.

In the above-described embodiment, the R value is used as the measurement parameter of the voice quality information. However, the R value is not limited to the R value as long as it is a criterion for determining the voice quality. The present invention can be similarly realized by using PESQ (Perceptual Evaluation Speech Quality) (defined in P.862 of ITU-T) which is a call quality test.
Here, PESQ is a P.Q. This is a method for estimating the listening quality defined in 862, in which a voice sample is prepared and the original sound is compared with the sound after passing through the evaluated system.

  In the above-described embodiment, the wireless base station stores the communication data as a reference. However, when the communication data is transmitted to a file server or the like, the storage capacity of the wireless base station is exceeded. However, it is possible to save communication data.

  Furthermore, in the above-described embodiment, the system control device 3 and the wireless base station 1 are communicated by wire. However, the communication is not limited to this as long as communication is possible, and wireless communication may be used.

  Furthermore, in the present invention, the means and functions included in the wireless base station 1 in the above-described embodiment are only required to be realized as the entire wireless communication system 100, and may be included in the system control device 3, for example.

Further, by recording the processing procedure for realizing the radio base station as each of the above-described embodiments on a recording medium as a program, the above-described functions according to each of the embodiments of the present invention are supplied from the recording medium. The program can be realized by causing a CPU of a computer constituting the radio base station to perform processing.
In this case, the present invention can be applied even when an information group including a program is supplied to the output device from the above recording medium or from an external recording medium via a network.
That is, the program code itself read from the recording medium realizes the novel function of the present invention, and the recording medium storing the program code and the signal read from the recording medium constitute the present invention. It will be.
As this recording medium, for example, flexible disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD + RW, magnetic tape, non-volatile Sex memory cards, ROM, etc. may be used.

  According to the program according to the present invention, each function in the above-described embodiment can be realized in a radio base station controlled by the program.

  Further, as shown in the above-described embodiments, the present invention can be used for, for example, a mobile phone equipped with a wireless LAN function, a wireless LAN access point, a wireless LAN controller, and the like.

DESCRIPTION OF SYMBOLS 1 Wireless base station 13 Control part 14 Real-time communication determination part 15 Communication data acquisition part 16 Timer 17 Communication data analysis part 17a Voice quality determination table 18 Storage part 18a Wireless quality storage part 19 E-mail transmission part 2 Wireless LAN terminal 23 Control part 24 Storage unit 24a Voice quality determination table

Claims (19)

A wireless base station that accommodates wireless communication terminals by wireless communication,
Communication data analysis means for analyzing real-time communication data by the wireless communication terminal and calculating real-time communication quality;
Quality determination means for determining whether or not the real-time communication quality calculated by the communication data analysis means has deteriorated from a predetermined level;
A radio base station comprising: a transmission unit that transmits first communication quality related information to a predetermined transmission destination when it is determined that the quality determination unit has deteriorated. The first communication quality related information includes at least the real-time communication quality,
Terminal specifying information for specifying the wireless communication terminal which is the real-time communication quality;
The radio base station according to claim 1, further comprising a quality degradation factor that has affected the degradation of the real-time communication quality. The real-time communication quality is an R value calculated from communication data in the real-time communication,
The quality determination means determines whether the real-time communication quality has deteriorated from a predetermined level by comparing the R value calculated by the communication data analysis means with a predetermined threshold value. The radio base station according to claim 1 or 2.   Whether the wireless communication by the wireless communication terminal is real-time communication depending on whether or not the communication data by the wireless communication terminal includes at least one of a predetermined signaling protocol and RTP (Real-time Transport Protocol) packet. The radio base station according to any one of claims 1 to 3, further comprising real-time communication determination means for determining whether or not.   The said sending means transmits an e-mail including the first communication quality related information to a predetermined e-mail address when it is judged that the quality judging means has deteriorated. 5. The radio base station according to any one of 4.   When the transmission means determines that the quality determination means has deteriorated, the transmission means includes a second communication quality related information that includes at least the terminal specification information for specifying the wireless communication terminal and the real-time communication quality. Information is transmitted, The radio base station of any one of Claim 1 to 5 characterized by the above-mentioned.   7. A radio communication system comprising: the radio base station according to claim 1; and a system control device that performs various controls in communication at the radio base station. A failure notification method in a wireless base station that accommodates wireless communication terminals by wireless communication,
A communication data analysis step of calculating real-time communication quality by analyzing real-time communication data by the wireless communication terminal;
A quality determination step of determining whether or not the real-time communication quality calculated by the communication data analysis step has deteriorated from a predetermined level;
A failure notification method comprising: a transmission step of transmitting first communication quality related information to a predetermined transmission destination when it is determined that the quality determination step has deteriorated. The first communication quality related information includes at least the real-time communication quality,
The failure notification method according to claim 8, comprising: terminal specifying information for specifying the wireless communication terminal that is the real-time communication quality; and a quality deterioration factor that has affected the deterioration of the real-time communication quality. The real-time communication quality is an R value calculated from communication data in the real-time communication,
In the quality determination step, it is determined whether or not the real-time communication quality has deteriorated from a predetermined level by comparing the R value calculated in the communication data analysis step with a predetermined threshold value. The failure notification method according to claim 8 or 9. Whether the wireless communication by the wireless communication terminal is real-time communication depending on whether or not the communication data by the wireless communication terminal includes at least one of a predetermined signaling protocol and RTP (Real-time Transport Protocol) packet. A real-time communication determination step for determining whether or not before the communication data analysis step,
The failure notification method according to any one of claims 8 to 10, wherein the communication data analysis step is performed when it is determined in the real-time communication determination step that real-time communication is performed.   The electronic mail including the first communication quality related information is transmitted to a predetermined mail address when it is determined that the quality is deteriorated by the quality determination process in the sending process. 12. The failure notification method according to any one of 11 above.   In the transmission step, when it is determined that the quality has been deteriorated in the quality determination step, the wireless communication terminal includes at least terminal specifying information for specifying the wireless communication terminal and the second communication quality related information including the real-time communication quality. The failure notification method according to claim 8, wherein information is transmitted. A wireless base station program for accommodating wireless communication terminals by wireless communication,
Communication data analysis processing for calculating real-time communication quality by analyzing real-time communication data by the wireless communication terminal,
A quality determination process for determining whether or not the real-time communication quality calculated by the communication data analysis process has deteriorated from a predetermined level;
A wireless base station that causes a computer of the wireless base station to execute transmission processing for transmitting first communication quality related information to a predetermined transmission destination when it is determined that the quality determination processing has deteriorated; Base station program. The first communication quality related information includes at least the real-time communication quality,
Terminal specifying information for specifying the wireless communication terminal which is the real-time communication quality;
15. The radio base station program according to claim 14, further comprising a quality degradation factor that has affected the degradation of the real-time communication quality. The real-time communication quality is an R value calculated from communication data in the real-time communication,
In the quality determination process, it is determined whether or not the real-time communication quality has deteriorated from a predetermined level by comparing the R value calculated by the communication data analysis process with a predetermined threshold value. The program of a radio base station according to claim 14 or 15. Whether the wireless communication by the wireless communication terminal is real-time communication depending on whether or not the communication data by the wireless communication terminal includes at least one of a predetermined signaling protocol and RTP (Real-time Transport Protocol) packet. A real-time communication determination process for determining whether or not the wireless base station computer executes the communication data analysis process before the communication data analysis process,
The wireless base station program according to any one of claims 14 to 16, wherein the communication data analysis process is executed when the real-time communication determination process determines that the communication data is real-time communication.   15. In the transmission process, when it is determined that the quality determination process has deteriorated, an e-mail including the first communication quality related information is transmitted to a predetermined e-mail address. The radio base station program according to any one of 17.   In the transmission process, when it is determined that the quality determination process has deteriorated, the wireless communication terminal includes at least terminal specification information for specifying the wireless communication terminal and the second communication quality related information including the real-time communication quality. The radio base station program according to any one of claims 14 to 18, wherein information is transmitted.

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