JPWO2009011065A1 - Wireless communication area state measurement system, wireless communication area state measurement method, and base station - Google Patents

Abstract

It is possible to grasp various problems in the service area of the mobile communication network, and to identify not only the problem location but also the cause of the problem. The wireless communication area status measurement system includes a downlink signal measurement unit 104 that measures a radio wave status of a downlink signal from a base station to a mobile terminal in a service area of a mobile communication network, and a positioning processing unit 105 that measures the position of the mobile terminal. Mobile terminal 100, uplink signal measurement unit 204 that measures the radio wave condition of the uplink signal from the mobile terminal to the base station, mobile terminal measurement data reception unit 205 that receives downlink measurement data and positioning data, uplink measurement data, and downlink measurement data , A base station 200 having a measurement data association unit 207 that associates positioning data, and a data management / display device 300 having a data analysis unit 303 that analyzes the associated measurement data.

Description

  The present invention relates to a radio communication area status measurement system, a radio communication area status measurement method, and a base station for measuring radio wave status in a service area in a mobile communication network, area status such as traffic information.

  Conventionally, in order to design a mobile communication network and optimize a service area, the electric vehicle is periodically run to measure radio wave conditions and traffic information. Or it went to the field based on the complaint from the user, and the radio wave condition and traffic information were measured with the measuring instrument. In the station design (cell design), considering the installation environment (terrain, building, population, etc.), the specifications of the radio base stations (transmission output, antenna type, antenna height, radio parameters) and the arrangement of the radio base stations Design (location, number). Even after setting up a radio base station, grasp the surrounding environmental changes (building construction, installation of base stations of other operators, traffic concentration, etc.), change transmission power, change antenna tilt angle, change Neighbor Cell List, It is necessary to perform adjustment work such as adding repeaters to optimize the service area. It is necessary to keep track of environmental changes on a continuous basis.

As a method for measuring an area situation such as a radio wave situation in a service area, it has been proposed to use information from a terminal instead of an electric vehicle or a measuring instrument. For example, in Patent Document 1, as a radio wave condition measurement system and radio wave condition measurement method in a mobile communication network, data necessary for radio wave measurement is obtained from normal communication of a mobile terminal of a general user without using an electric vehicle. Collecting and grasping the radio wave condition in the mobile communication network are disclosed. Further, in Patent Document 2, as a mobile communication system and its service area quality information collection method, in order to identify the cause of deterioration of the radio wave reception state, not only the terminal location information and radio wave reception level, but also the bit error rate Those that also measure such quality indicators are disclosed.
Japanese Patent No. 3495025 Japanese Patent No. 3344365

  In the above conventional example, when information from the terminal is used, the downlink signal from the base station to the terminal is only measured. In this way, when measuring only the downlink signal, it is possible to grasp the location where the radio wave condition is bad, but it is possible to grasp the occurrence and distribution of various problems such as traffic concentration status, and identify the cause of the problem It was difficult to do.

  Depending on the cause of deterioration in communication quality, the quality of the downlink signal is not affected, but the quality of the uplink signal may be affected. In addition, as a communication method that expands the third generation mobile phone (3G), as in the LTE (Long Term Evolution) system studied in 3GPP (3rd Generation Partnership Project), an international standardization organization of mobile phones, In systems where the communication method differs between upstream and downstream, evaluation of the communication quality of the upstream signal itself has become an important situation.

  The present invention has been made in view of the above circumstances, and can identify various problems in a service area of a mobile communication network, and can identify not only the problem location but also the cause of the problem. An object of the present invention is to provide a wireless communication area state measurement system, a wireless communication area state measurement method, and a base station.

A wireless communication area status measurement system according to the present invention includes a downlink signal measurement unit that measures downlink measurement data related to a radio signal status of a downlink signal from a base station to a mobile terminal in a service area of a mobile communication network, and the mobile terminal An uplink signal measurement unit that measures uplink measurement data related to radio conditions of an uplink signal to the base station, a positioning processing unit that measures positioning data related to the position of the mobile terminal, the uplink measurement data, and the downlink And a measurement data association unit for associating the measurement data and the positioning data.
Thus, by associating the downlink measurement data and the uplink measurement data, it is possible to grasp various wide-ranging problems in the service area of the mobile communication network. Also, it is possible to specify not only the problem occurrence location but also the problem occurrence factor.

Further, the present invention is the above wireless communication area situation measurement system, comprising a traffic measurement unit that measures traffic measurement data related to a traffic situation in at least one of the uplink signal and the downlink signal, and the measurement data association unit is The traffic measurement data also includes data for association.
This makes it possible to grasp and identify a wider range of factors than in the case of grasping only the downlink radio wave condition. In addition to specifying the problem occurrence location in the service area, it is possible to specify more detailed problem occurrence factors.

The present invention is also the above wireless communication area status measurement system, wherein a terminal movement state detection unit that detects a movement speed or movement amount of the mobile terminal based on the positioning data; And a data management unit that does not use data when the movement amount is a predetermined value or more.
As a result, measurement data can be analyzed with data having a certain positioning accuracy, and the positional accuracy of the measurement data can be ensured. The predetermined value is appropriately determined according to the accuracy of the desired positioning information.

Further, the present invention is the above-described wireless communication area situation measurement system, wherein a terminal movement state detection unit that detects a movement state of the mobile terminal based on the positioning data, the detected movement state, and the uplink signal And an uplink transmission position estimation unit that estimates the transmission position of the uplink signal based on time information at which measurement data is acquired.
Thereby, the positioning error due to the movement of the terminal can be corrected, and the position measurement accuracy can be improved in consideration of the positioning error.

Further, the present invention is the above wireless communication area status measurement system, wherein at least one of the uplink measurement data, the downlink measurement data, and the traffic measurement data has a data amount equal to or less than a predetermined value. Including a data collection management unit for controlling data collection.
As a result, measurement information can be efficiently collected, and useless data acquisition can be eliminated without degrading the quality of analysis of measurement results. In addition, an increase in processing load on the system and waste of resources can be suppressed, and an appropriate amount of measurement data can be collected.

  The present invention is the above-described wireless communication area status measurement system, wherein the data collection management unit includes a message monitoring unit that detects a predetermined message exchanged between a base station and a mobile terminal, and the predetermined And a measurement control unit that controls the start and stop of the measurement of the uplink signal and the downlink signal according to the detection result of the message.

  Further, the present invention is the above-described wireless communication area status measurement system, wherein the data collection management unit sets an upper limit of the number of measurements for each section dividing the service area of the mobile communication network And a measurement control unit that stops the measurement of the corresponding section when the measurement number upper limit is reached.

  Further, the present invention is the above-described wireless communication area status measurement system, wherein the data collection management unit includes a group setting unit that groups mobile terminals in a service area of a mobile communication network, and the set A measurement control unit that controls start and stop of the measurement of the uplink signal and the downlink signal may be provided for each group.

  Further, the present invention is the above wireless communication area status measurement system, wherein the data collection management unit includes a battery monitoring unit that monitors a battery of the mobile terminal, and a case where the remaining battery level is equal to or less than a predetermined value. A measurement control unit that stops the measurement in the corresponding mobile terminal.

  Further, the present invention is the above-described wireless communication area situation measurement system, wherein the mobile terminal includes the downlink signal measurement unit and the positioning processing unit, and the base station associates the uplink signal measurement unit and the measurement data. And a mobile terminal measurement data receiving unit that receives the downlink measurement data and the positioning data measured at the mobile terminal.

  In addition, the present invention provides any one of the above wireless communication area status measurement systems, comprising a data analysis unit that analyzes the uplink measurement data, the downlink measurement data, and the positioning data associated with each other by the association unit including.

The base station of the present invention is a base station used in a radio communication area status measurement system for measuring a status in a service area in a mobile communication network, and an uplink signal from a mobile terminal in the service area of the mobile communication network An uplink signal measurement unit for measuring uplink measurement data related to the radio wave condition of the mobile station, downlink measurement data related to the radio wave condition of the downlink signal from the base station to the mobile terminal measured at the mobile terminal, and the mobile terminal A mobile terminal measurement data receiving unit that receives positioning data related to the position of the mobile station, and a measurement data associating unit that associates the uplink measurement data, the downlink measurement data, and the positioning data.
Thus, by associating the downlink measurement data and the uplink measurement data, it is possible to grasp various wide-ranging problems in the service area of the mobile communication network. Also, it is possible to specify not only the problem occurrence location but also the problem occurrence factor.

Further, the present invention is the above-described base station, further comprising a traffic measurement unit that measures traffic measurement data related to traffic conditions in the uplink signal, wherein the measurement data association unit also associates the traffic measurement data together including.
This makes it possible to grasp and identify a wider range of factors than in the case of grasping only the downlink radio wave condition. In addition to specifying the problem occurrence location in the service area, it is possible to specify more detailed problem occurrence factors.

  The radio communication area status measurement method of the present invention comprises an uplink signal measurement step for measuring uplink measurement data related to radio wave status of an uplink signal from a mobile terminal to a base station in a service area of a mobile communication network, and from the base station A downlink signal measurement step for measuring downlink measurement data related to a radio wave condition of a downlink signal to the mobile terminal, a positioning step for measuring positioning data related to the position of the mobile terminal, the uplink measurement data, and the downlink measurement Data and a measurement data association step for associating the positioning data.

  Further, the present invention is the above wireless communication area situation measuring method, comprising a data analysis step of analyzing the uplink measurement data, the downlink measurement data, and the positioning data associated in the measurement data association step including.

  According to the present invention, it is possible to grasp various problems in a service area of a mobile communication network, and not only a problem occurrence location but also a problem occurrence factor can be identified, A communication area condition measuring method and a base station can be provided.

The block diagram which shows the structure of the radio | wireless communication area condition measurement system which concerns on the 1st Embodiment of this invention. The figure which shows the process sequence of the wireless communication area condition measurement system which concerns on 1st Embodiment, and the flow of data. The figure which shows the example of the uplink measurement data measured and acquired in an uplink signal measurement part The figure which shows the example of the positioning data and downlink measurement data which it receives and acquires in a mobile terminal measurement data receiving part The figure which shows the example of each measurement data linked | related in the measurement data correlation part The figure which shows the example of the cause of a problem in the service area identifiable by the process of 1st Embodiment The block diagram which shows the structure of the radio | wireless communication area condition measurement system which concerns on the 2nd Embodiment of this invention. The figure which shows the process sequence and data flow of the radio | wireless communication area condition measurement system which concern on 2nd Embodiment. The figure which shows the example of each measurement data linked | related in the measurement data correlation part The figure which shows the example of the problem cause in the service area which can be identified by the process of 2nd Embodiment The figure explaining the gap of the positioning point when the terminal is moving The block diagram which shows the structure of the radio | wireless communication area condition measurement system which concerns on the 3rd Embodiment of this invention. The flowchart which shows the procedure of the estimation process of the uplink transmission position in 3rd Embodiment. The figure explaining the calculation processing of the speed between positioning data The figure which shows the example of the state transition of the measurement start / stop in the conventional radio | wireless communication area condition measurement system The figure explaining the example where excess data is acquired The block diagram which shows the structure of the radio | wireless communication area condition measurement system which concerns on the 4th Embodiment of this invention. The figure which shows the state transition of the measurement start / stop in 4th Embodiment The block diagram which shows the structure of the radio | wireless communication area condition measurement system which concerns on the 5th Embodiment of this invention. The figure explaining the data collection management processing for every division in a service area The block diagram which shows the structure of the wireless communication area condition measurement system which concerns on the 6th Embodiment of this invention. The figure explaining the process regarding the setting of the grouping of a mobile terminal, and determination of a measuring object group The block diagram which shows the structure of the wireless communication area condition measurement system which concerns on the 7th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Mobile terminal 101 Wireless reception part 102 Wireless transmission part 103 Communication protocol processing part 104 Downstream signal measurement part 105 Positioning process part 106, 106e, 106f Measurement start / stop part 107 Group number calculation part 108 Battery monitoring part 200 Base station 201 Wireless reception Unit 202 wireless transmission unit 203 communication protocol processing unit 204 uplink signal measurement unit 205 mobile terminal measurement data reception unit 206, 206a, 206c, 206d, 206e, 206f measurement control unit 207, 207a, 207b measurement data association unit 208 traffic measurement unit 209 Terminal movement state detection unit 210 Uplink transmission position estimation unit 211 Message monitoring unit 212 Group setting unit 215 Time processing unit 300 Data management / display device 301 Database 302, 302b, 302d Data tube Part 303,303b data analysis unit 304 display unit 305,305c, 305d the measurement control unit 306 input unit

(First embodiment)
FIG. 1 is a block diagram showing a configuration of a wireless communication area situation measurement system according to the first embodiment of the present invention, and FIG. 2 shows a processing procedure and data flow of the wireless communication area situation measurement system according to the first embodiment. FIG.

  The wireless communication area status measurement system of this embodiment includes a mobile terminal 100, a base station 200, and a data management / display device 300. Although only one mobile terminal 100, base station 200, etc. are shown in the figure, a necessary number of base stations 200 and data management / display devices 300 are provided as appropriate in the mobile communication network, and the mobile terminal 100 has a service area ( There is an appropriate number in the communication area.

  The mobile terminal 100 is a portable wireless communication terminal device that has a wireless communication function such as a mobile phone and a PDA and moves within a service area. The mobile terminal 100 includes a wireless reception unit 101, a wireless transmission unit 102, a communication protocol processing unit 103, a downlink signal, and the like. A measurement unit 104, a positioning processing unit 105, and a measurement start / stop unit 106 are provided.

  The wireless reception unit 101 receives a downlink radio wave from the base station 200, performs demodulation / decoding processing on the received signal, and then transmits received data to the communication protocol processing unit 103. The wireless transmission unit 102 performs encoding / modulation processing on the transmission data transmitted from the communication protocol processing unit 103, and then transmits a transmission signal to the base station 200 using an uplink radio wave. These wireless reception unit 101 and wireless transmission unit 102 realize the layer 1 function of the OSI reference model, and need only realize the normal wireless communication function of the mobile terminal, and are special means for the present invention. There is no need.

  The communication protocol processing unit 103 performs processing of a communication protocol for realizing voice call and data communication in a mobile communication network. The communication protocol processing unit 103 uses the radio reception unit 101 and the radio transmission unit 102 on the mobile terminal 100 side, and the radio reception unit 201 and the radio transmission unit 202 on the base station 200 side to communicate on the base station 200 side. Communication data can be transmitted to and received from the protocol processing unit 203. The communication protocol processing unit 103 realizes the functions of the OSI reference model layer 2 or higher, and is only required to realize the normal communication function of the mobile terminal, and need not be a special means for the present invention. As a specific example of the communication protocol, WCDMA MAC / RLC / RRC or the like is used.

  The downlink signal measurement unit 104 measures an amount (downlink measurement data) representing the radio wave condition in the downlink direction from the reception data received by the wireless reception unit 101. The downlink signal measurement unit 104 uses the communication protocol processing unit 103, the wireless transmission unit 102 on the mobile terminal 100 side, the wireless reception unit 201 on the base station 200 side, and the communication protocol processing unit 203 to It is possible to transmit the downlink measurement data to the mobile terminal measurement data receiving unit 205.

The “downlink measurement data” measured by the downlink signal measurement unit 104 includes, for example, a downlink reception level, a downlink interference amount, and a downlink error rate described below. As the downlink reception level, for example,
RSCP (received signal code power)
RSRP (reference symbol received power)
RSSI (received signal strength indicator)
and so on.
Further, as the amount of downlink interference, for example,
SIR (signal to interference ratio)
Ec / No (the ratio of received energy to received power density per chip within the frequency band)
ISCP (interference signal code power)
and so on.
Also, as the downlink error rate, for example,
BLER (block error rate)
BER (bit error rate)
and so on. These are described in 3GPP TS 25.302 (Service provided by the physical layer) and the like.

  The downlink measurement data may be an average value of a plurality of measurements. In addition, if not only downlink radio waves from the communicating base station but also downlink radio waves from other peripheral base stations can be measured, these may be included in the measurement target.

  The positioning processing unit 105 measures the position of the mobile terminal 100. The positioning processing unit 105 uses the communication protocol processing unit 103, the wireless transmission unit 102 on the mobile terminal 100 side, the wireless reception unit 201 on the base station 200 side, and the communication protocol processing unit 203 on the base station 200 side. It is possible to transmit positioning data to the mobile terminal measurement data receiving unit 205. This positioning processing unit 105 is standardized by third-generation mobile terminals (standardized by 3GPP), and is based on positioning using radio waves from GPS satellites, positioning based on radio wave arrival time differences between base stations, and the like. The existing latitude, longitude, and altitude are measured to obtain positioning data as position information.

  The measurement start / stop unit 106 instructs the downlink signal measurement unit 104 and the positioning processing unit 105 to start / stop measurement. The measurement start / stop unit 106 outputs a measurement start or stop instruction at a preset timing internally or at a timing specified by the measurement control unit 206 of the base station 200. The timing preset in the interior may be at regular intervals, at a specific time, or when some event occurs. Examples of event occurrence include (a1) when a mobile terminal is turned on, (a2) a specific communication message (for example, “RRC Connection Setup” or “Radio”) when the mobile terminal is turned on. It is used when receiving Bearer Setup "). As an example of an event for stopping measurement, (b1) when there is no change in positioning data (for example, when the change value of positioning data is within a specified value for three consecutive times), (b2) a specific communication message ( For example, when "RRC Connection Release" or "Radio Bearer Release") is received.

  In the above configuration, the communication protocol processing unit 103, the downlink signal measurement unit 104, the positioning processing unit 105, the measurement start / stop unit 106, and the like execute a predetermined program using a processor and a memory provided in the mobile terminal 100. Thus, the function of each unit is realized.

  The base station 200 includes a radio reception unit 201, a radio transmission unit 202, a communication protocol processing unit 203, an uplink signal measurement unit 204, a mobile terminal measurement data reception unit 205, a measurement control unit 206, and a measurement data association unit 207. The

  The wireless reception unit 201 receives the uplink radio wave from the mobile terminal 100, performs demodulation / decoding processing on the received signal, and then transmits the received data to the communication protocol processing unit 203. The wireless transmission unit 202 encodes and modulates transmission data transmitted from the communication protocol processing unit 203, and then transmits a transmission signal to the mobile terminal 100 using a downlink radio wave. The wireless receiving unit 201 and the wireless transmitting unit 202 realize the layer 1 function of the OSI reference model, and need only realize the normal wireless communication function of the mobile terminal, and are special means for the present invention. There is no need. In the present embodiment, the radio reception unit 201 transmits, as uplink reception data, for example, a spread code corresponding to an individual mobile terminal one-to-one as an uplink reception data, to the communication protocol processing unit 203 and the uplink signal measurement unit 204. The example which provides the signal (example of a WCDMA system) de-spreaded according to FIG.

  The communication protocol processing unit 203 performs processing of a communication protocol for realizing voice communication and data communication in a mobile communication network. The communication protocol processing unit 203 uses the radio reception unit 201 and radio transmission unit 202 on the base station 200 side, and the radio reception unit 101 and radio transmission unit 102 on the mobile terminal 100 side to communicate on the mobile terminal 100 side. Communication data can be transmitted to and received from the protocol processing unit 103. The communication protocol processing unit 203 realizes the functions of the OSI reference model layer 2 or higher, and is only required to realize the normal communication function of the mobile terminal, and need not be a special means for the present invention. As a specific example of the communication protocol, WCDMA MAC / RLC / RRC or the like is used.

The uplink signal measurement unit 204 measures an amount (uplink measurement data) representing an uplink radio wave condition from the reception data received by the wireless reception unit 201. In the uplink signal measurement unit 204, the “uplink measurement data” measured with reference to the uplink reception data provided from the radio reception unit 201 is, for example, the uplink reception level and the uplink described below as in the case of the downlink measurement data. Includes interference and uplink error rate. As an upstream reception level, for example,
RSCP (received signal code power)
RSRP (reference symbol received power)
RSSI (received signal strength indicator)
and so on.
Further, as an uplink interference amount, for example,
SIR (signal to interference ratio)
Ec / No (the ratio of received energy to received power density per chip within the frequency band)
ISCP (interference signal code power)
and so on.
Also, as an upstream error rate, for example,
BLER (block error rate)
BER (bit error rate)
and so on.

  These uplink measurement data are stored in a memory or the like in the uplink signal measurement unit 204 in association with identification information of the transmission source mobile terminal (for example, in the example of the WCDMA system, a spread code corresponding to each individual mobile terminal). The data is stored in the data storage area by the unit or sent to the measurement data association unit 207.

  The mobile terminal measurement data receiving unit 205 receives downlink measurement data and positioning data measured by the mobile terminal 100. The downlink measurement data and positioning data received by the mobile terminal measurement data reception unit 205 are associated with the uplink measurement data measured by the uplink signal measurement unit 204 by the measurement data association unit 207. The mobile terminal measurement data receiving unit 205 uses the communication protocol processing unit 103 and the wireless transmission unit 102 on the mobile terminal 100 side, and the wireless reception unit 201 and the communication protocol processing unit 203 on the base station 200 side to It is possible to receive positioning data from the positioning processing unit 105 on the 100 side and downlink measurement data from the downlink signal measuring unit 104.

  In the example of the WCDMA system, the mobile terminal measurement data receiving unit 205 receives positioning data and downlink measurement data from the mobile terminal using an RRC measurement report message. Since these data are received using the communication protocol processing unit 103, the wireless transmission unit 102 on the mobile terminal 100 side, and the wireless reception unit 201 and the communication protocol processing unit 203 on the base station 200 side, the mobile terminal measurement The data reception unit 205 can obtain the spreading code corresponding to the mobile terminal that is the transmission source of the measurement report message from the communication protocol processing unit 203. The received positioning data and downlink measurement data are associated with identification information of the source mobile terminal (for example, a one-to-one spread code corresponding to an individual mobile terminal), and a storage unit such as a memory in the mobile terminal measurement data receiving unit 205 Or stored in the data storage area or sent to the measurement data association unit 207.

  The measurement control unit 206 issues a measurement start / stop instruction to the uplink signal measurement unit 204 in the base station 200 and the measurement start / stop unit 106 of the mobile terminal 100. The measurement control unit 206 outputs a measurement start or stop instruction at a preset timing internally or at a timing instructed from the measurement control unit 305 of the data management / display device 300. In order for the measurement control unit 206 to send a measurement control signal to the mobile terminal 100, the communication protocol processing unit 203 on the base station 200 side, the wireless transmission unit 202, the wireless reception unit 101 on the mobile terminal 100 side, and the communication protocol processing unit 103 It is possible to use this.

  The timing preset in the measurement control unit 206 for outputting the measurement start / stop instruction may be a fixed time, a specific time or the like, or may be when some event occurs. Examples of event occurrence include (a1) when a predetermined call processing alarm occurs, (a2) when uplink received power reaches a predetermined level, (a3) downlink When the transmission power reaches a predetermined level, (a4) when the number of connections between the base station and the mobile terminal reaches a predetermined number is used. Examples of events for stopping measurement include (b1) when a predetermined call processing load threshold is exceeded, (b2) when uplink reception power divides a predetermined level, and (b3) downlink transmission power is a predetermined level. (B4) is used when the number of connections between the base station and the mobile terminal is a predetermined number.

  The measurement data association unit 207 associates positioning data, downlink measurement data, and uplink measurement data. The measurement data association unit 207 includes a data storage area by a storage unit such as a memory for storing association information. Further, the measurement data association unit 207 transmits the association information and the measurement data to the data management unit 302 of the data management / display device 300. Although not shown, a time processing unit that has a clock function and outputs time information to the measurement data association unit 207 may be further included.

  The measurement data association unit 207 refers to the data storage areas of the uplink signal measurement unit 204 and the mobile terminal measurement data reception unit 205, and if there is the same identification information of the mobile terminal, the positioning data, the downlink measurement data, Correlate uplink measurement data. The association may be performed based on the identification information of the mobile terminal, but the radio signal measurement time of the uplink signal or downlink signal or the reception time at the mobile terminal measurement data receiving unit 205 may be used. In the measurement data association unit 207, when storing data in a data storage area by a storage unit such as a memory, only the association information is stored, and the measurement data body is stored in the uplink signal measurement unit 204 and the mobile terminal measurement data reception unit 205. It may be held as it is, or not only the association information but also the measurement data body may be stored together. Here, the “association information” may include table information indicating the type and number of each associated data, a pointer indicating the storage location of each data, and the like.

  In the above configuration, the communication protocol processing unit 203, the uplink signal measurement unit 204, the mobile terminal measurement data reception unit 205, the measurement control unit 206, the measurement data association unit 207, and the like use a processor and a memory provided in the base station 200. The function of each unit is realized by executing a predetermined program.

  Among the units constituting the base station 200, each unit other than the radio receiving unit 201 and the radio transmitting unit 202 is a device other than the base station constituting the radio access network, such as a radio network controller (RNC). It may be provided by mounting. Of the units constituting the base station 200, the units other than the radio receiving unit 201, the radio transmitting unit 202, and the communication protocol processing unit 203 are used as the data management / display device 300 or the base station maintenance console device. Etc. may be provided.

  The data management / display device 300 includes a database 301, a data management unit 302, a data analysis unit 303, a display unit 304, a measurement control unit 305, and an input unit 306. The data management / display device 300 may be, for example, a device in which the above-described components are additionally mounted on a normal network management device that monitors a mobile communication network. It need not be a special device for the present invention.

  The data management unit 302 receives positioning data, downlink measurement data, uplink measurement data association information, and measurement data from the measurement data association unit 207 of the base station 200, and performs addition, deletion, search, and the like to the database 301. To manage these data. The data management unit 302 may target only one base station or a plurality of base stations.

  The data analysis unit 303 performs statistical processing and analysis of data transmitted from the data management unit 302 and passes the processing result to the display unit 304. The display unit 304 includes a display device such as a liquid crystal display panel, and displays data passed from the data analysis unit 303 as characters, numbers, graphs, images, and the like. The display unit 304 can also display data directly passed from the data management unit 302 without passing through the data analysis unit 303.

  The measurement control unit 305 gives a measurement start / stop instruction to the measurement control unit 206 of the base station 200. The measurement control unit 305 outputs a measurement start or stop instruction at a preset timing inside or by an input from the input unit 306. The measurement control unit 305 may target only one base station or a plurality of base stations.

  The input unit 306 has an input device such as a keyboard and a pointing device, and inputs various operation instructions and setting instructions to the system.

  In the above configuration, the data management unit 302, the data analysis unit 303, the measurement control unit 305, and the like perform functions of each unit by executing predetermined programs using a processor and a memory provided in the data management / display device 300. Realized.

  Each unit constituting the data management / display apparatus 300 may be mounted and provided in a base station, a radio network controller (RNC), a maintenance console apparatus of the base station, or the like. The communication path with the data management / display apparatus 300 base station 200 is not particularly limited.

  Next, a specific processing example of the first embodiment will be described. Here, a flow of processing when a measurement start instruction is issued from the measurement control unit 305 of the data management / display device 300 is shown.

  First, a measurement start instruction by a measurement control signal is issued from the measurement control unit 305 of the data management / display apparatus 300 to the measurement control unit 206 of the base station 200 (S1 in FIG. 2). This measurement start instruction includes instruction contents relating to measurement timing such as measurement at regular intervals.

  Then, a measurement start instruction by the measurement control signal is transmitted from the measurement control unit 206 of the base station 200 to the uplink signal measurement unit 204 of the base station 200 and the measurement start / stop unit 106 of the mobile terminal 100 (S2 in FIG. 2). Here, the transmission of the measurement start instruction from the base station 200 to the mobile terminal 100 is actually performed by the communication protocol processing unit 203, the wireless transmission unit 202 on the base station 200 side, and the wireless reception unit 101 on the mobile terminal 100 side, The communication protocol processing unit 103 is used.

  Next, the uplink signal measurement unit 204 starts measuring the amount representing the uplink radio wave condition using the uplink reception data received by the wireless reception unit 201 (S3 in FIG. 2). FIG. 3 is a diagram showing an example of uplink measurement data measured and acquired by the uplink signal measurement unit 204. As shown in FIG. 3, for example, the uplink signal measurement unit 204 measures and acquires identification information (spread code), uplink reception level (RSCP), and uplink interference amount (SIR) of a transmission source mobile terminal as uplink measurement data. The data is stored in its own data storage area or transmitted to the measurement data association unit 207.

  Further, a measurement start instruction is issued from the measurement start / stop unit 106 of the mobile terminal 100 to the positioning processing unit 105 and the downlink signal measurement unit 104 (S4 in FIG. 2). The positioning processing unit 105 starts measuring the position of the mobile terminal 100. Then, the downlink signal measurement unit 104 starts measuring the amount representing the downlink radio wave status from the downlink reception data received by the wireless reception unit 101 (S5 in FIG. 2).

  Thereafter, the positioning data measured by the positioning processing unit 105 of the mobile terminal 100 and the downlink measurement data measured by the downlink signal measuring unit 104 are transmitted to the mobile terminal measurement data receiving unit 205 of the base station 200 (FIG. 2 S6). Here, the transmission of positioning data and downlink measurement data from the mobile terminal 100 to the base station 200 is actually performed by the communication protocol processing unit 103 on the mobile terminal 100 side, the wireless transmission unit 102, and the wireless reception on the base station 200 side. Unit 201 and communication protocol processing unit 203 are used. FIG. 4 is a diagram illustrating an example of positioning data and downlink measurement data received and acquired by the mobile terminal measurement data receiving unit 205. For example, as shown in FIG. 4, the mobile terminal measurement data receiving unit 205 obtains identification information (spreading code), position (positioning data), downlink reception level (RSCP), and downlink interference (SIR) of the source mobile terminal. Received and acquired as downlink measurement data and stored in its own data storage area or transmitted to the measurement data association unit 207.

  Next, the measurement data associating unit 207 of the base station 200 refers to the data respectively acquired by the uplink signal measuring unit 204 and the mobile terminal measurement data receiving unit 205, and determines the positioning data, downlink measurement data, and uplink measurement data. Association is performed (S7 in FIG. 2). The measurement data association unit 207 stores only the association information in its own data storage area, or stores the association information and each measurement data together.

  FIG. 5 is a diagram illustrating an example of each measurement data associated with the measurement data association unit 207. FIG. 5A shows an example in which downlink measurement data at the mobile terminal is associated with uplink measurement data at the base station based on the terminal identification information. As shown in FIG. 5A, the identification information (spreading code), position (positioning data), downlink reception level (RSCP), downlink interference amount (SIR), uplink reception level (RSCP), uplink of the mobile terminal as the transmission source The amount of interference (SIR) is associated and held. FIG. 5B shows an example in which mobile terminals in a specific area are selected and the average values of downlink measurement data and uplink measurement data related to these mobile terminals are associated with each other. As shown in FIG. 5B, the region information indicating the range in which the mobile terminal is located, the mobile terminal identification information, the average downlink reception level (RSCP), the average downlink interference amount (SIR), the uplink reception level The average value (RSCP) and the average value (SIR) of the uplink interference amount are held in association with each other. In the present embodiment, the case where the downlink measurement data, the uplink measurement data, and the positioning data are associated with each other based on the terminal identification information has been exemplified. However, the downlink measurement data, the uplink measurement data, and the positioning data can be appropriately associated with each other. If possible, the association method is not limited to this. For example, the downlink measurement data, the uplink measurement data, and the positioning data may be associated with each other based on time information regarding the measurement times of the downlink measurement data, the uplink measurement data, and the positioning data.

  Then, the data management unit 302 of the data management / display device 300 acquires the association information and the measurement data from the measurement data association unit 207 of the base station 200, and stores them in the database 301 (S8 in FIG. 2). Next, statistical processing and analysis of data are performed by the data analysis unit 303 of the data management / display device 300, and the measurement result is displayed by the display unit 304 (S9 in FIG. 2).

  Note that measurement may be started not by the measurement control unit 305 of the data management / display device 300 but by an instruction from the measurement control unit 206 of the base station 200 or an instruction from the measurement start / stop unit 106 of the mobile terminal 100. The processing is performed in substantially the same manner as described above.

FIG. 6 is a diagram illustrating an example of a problem occurrence factor in a service area that can be identified by the processing of the first embodiment. In the mobile communication network, the following factors can cause the communication quality in a specific area within the service area to decrease, such as a decrease in the call completion rate.
(1-1) Radio wave propagation interference due to obstacles (1-2) Increase in the amount of interference from other systems (1-3) Traffic concentration For each of these factors, the radio wave conditions acquired by the first embodiment The state of each measurement data is as shown in FIG. In FIG. 6, “◯” indicates a normal value, and “X” indicates a deviation from the normal value.

  Here, when traffic concentration occurs, the downlink interference amount is a normal value, but the uplink interference amount deviates from the normal value. This traffic concentration factor (1-3) cannot be recognized by measuring only the downlink signal as in the conventional example, but by measuring the uplink signal (uplink interference amount) as in the present embodiment, It becomes possible to grasp the deterioration of communication quality due to concentration.

  Further, when communication quality is reduced by measuring a downlink signal (downlink interference amount) and an uplink signal (uplink interference amount) and comparing a combination of measurement data as in the present embodiment, the communication from other systems It becomes possible to identify the cause (1-2) of the increase in the amount of interference and the factor (1-3) of the traffic concentration. The data analysis unit 303 may analyze the cause of the problem in the service area.

  As described above, according to the first embodiment, not only the downlink signal obtained at the mobile terminal but also the uplink signal obtained at the base station is measured, and the radio wave condition (reception level, interference amount) of the uplink signal is measured. Compared with the case where only the downlink radio wave condition is grasped, a wide range of factors can be grasped and identified. Further, not only the problem occurrence location in the service area but also the cause of the problem can be specified.

(Second Embodiment)
FIG. 7 is a block diagram showing a configuration of a wireless communication area situation measurement system according to the second embodiment of the present invention. FIG. 8 shows a processing procedure and data flow of the wireless communication area situation measurement system according to the second embodiment. FIG.

  The second embodiment is an example in which components are newly added to the configuration of the first embodiment, and the operation is partially changed. Here, detailed description of the same elements as those of the first embodiment described above is omitted.

  In the wireless communication area status measurement system according to the second embodiment, the base station 200 includes a traffic measurement unit 208. The traffic measurement unit 208 counts an index indicating communication traffic based on communication data (protocol data) transmitted / received to / from the mobile terminal 100 in the communication protocol processing unit 203, and outputs a measurement result as traffic measurement data. The traffic measurement unit 208 may be configured to be mounted on the mobile terminal 100.

  “Traffic measurement data” measured by the traffic measurement unit 208 is data representing the amount of communication between the base station and the mobile terminal. Examples of “traffic measurement data” include the number of successful RRC connections (rate) / number of failures (rate), downlink MAC PDU throughput / uplink MAC PDU throughput (DL MAC PDU throughput / UL MAC PDU throughput), and the like.

  The measurement control unit 206a issues a measurement start / stop instruction to the traffic measurement unit 208 in addition to the uplink signal measurement unit 204 in the base station 200, and also performs measurement to the measurement start / stop unit 106 of the mobile terminal 100. Give start / stop instructions. The measurement data association unit 207a associates traffic measurement data in addition to the positioning data, downlink measurement data, and uplink measurement data, and generates association information.

  FIG. 9 is a diagram illustrating an example of each measurement data associated in the measurement data association unit 207a. FIG. 9 shows an example in which mobile terminals in a specific area are selected and the average value of downlink measurement data, the average value of uplink measurement data, and traffic measurement data related to these mobile terminals are associated with each other. As shown in FIG. 9, area information indicating a range in which the mobile terminal is located, identification information of the mobile terminal, average downlink reception level (RSCP), average downlink interference (SIR), average uplink reception level ( RSCP), the average value of uplink interference (SIR), the number of RRC connection successes, and the number of RRC connection failures are held in association with each other. Other processes are the same as those in the first embodiment.

FIG. 10 is a diagram illustrating an example of a problem occurrence factor in a service area that can be identified by the processing of the second embodiment. In the mobile communication network, the following factors can cause the communication quality in a specific area within the service area to decrease, such as a decrease in the call completion rate.
(2-1) Radio wave propagation interference due to obstacles (2-2) Increase in the amount of interference from other systems (2-3) Traffic concentration (Number of users increased more than expected)
(2-4) Traffic concentration (although the number of users is within the expected range, the ratio of high traffic users has increased more than expected)
For each of these factors, the measurement data indicating the radio wave status and the traffic status acquired by the second embodiment will be as shown in FIG. In FIG. 10, “◯” indicates a normal value, and “X” indicates a deviation from the normal value.

  Here, when traffic concentration occurs due to a large number of users (2-3), the uplink interference amount and the RRC connection success rate are out of normal values. Further, when traffic concentration occurs due to a high high traffic user rate (2-4), the RRC connection success rate becomes a normal value although the uplink interference amount is deviated from the normal value. As described above, the traffic concentration factor (2-3) due to the large number of users and the traffic concentration factor (2-4) due to the increase in the high traffic user rate are the same as in this embodiment. It can be grasped by measuring the rate).

  Further, in the first embodiment, when the communication quality deteriorates by comparing the combination of the downlink measurement data, the uplink measurement data, and the traffic measurement data as in the present embodiment, the type of the factor of traffic concentration is set in the first embodiment. Although it cannot be identified, in the second embodiment, the factor (2-3) due to the increase in the number of users and the factor (2-4) due to the increase in the high traffic user rate can be identified. The data analysis unit 303 may analyze the cause of the problem in the area described above.

  As described above, according to the second embodiment, in addition to the radio wave condition of the uplink signal obtained at the base station, the traffic information obtained at the base station or the mobile terminal is acquired, and these measurement data are used as the location information of the mobile terminal. As a result, it is possible to grasp and identify a wider range of factors than in the case of grasping only the downlink radio wave condition. Further, not only the problem occurrence location in the service area but also more detailed problem occurrence factors can be specified than in the first embodiment.

(Third embodiment)
When an uplink signal is transmitted from the mobile terminal to the base station, the position of the corresponding mobile terminal may not be obtained accurately when measuring the radio wave condition of the uplink signal at this time. For example, when positioning data is transmitted from a mobile terminal to a base station using an uplink signal, if the mobile terminal is moving, the position where the positioning data is obtained in a predetermined cycle and the position where the positioning data is transmitted (uplink signal The transmission position may be different. In addition, when the base station measures an uplink signal, the uplink signal may not include positioning data. In this way, it may happen that accurate position information cannot be acquired due to a difference between the position of the terminal that transmits the uplink signal and the positioning data.

  FIG. 11 is a diagram for explaining the displacement of the positioning point when the terminal is moving. In FIG. 11, the lower mobile terminal A is in a stationary state, the middle mobile terminal B is moving at a low speed, and the upper mobile terminal C is moving at a high speed. Further, it is assumed that all mobile terminals A to C perform positioning in the same cycle.

  Here, in order to know the uplink transmission points (P2, P4, P6) at which the uplink signal from the mobile terminal being measured by the base station is transmitted, (1) using the latest latest positioning data, (2 There are two possible ways to request a new positioning. When the method (1) is used, since P1, P3, and P5 are the latest positioning data, these are adopted. In this case, since the mobile terminal A is stationary, the latest past positioning point P1 and the upstream transmission point P2 become equal, and a correct transmission point can be obtained. However, when the terminal is moving, in the case of mobile terminal B, the uplink transmission point is P4 that has already moved from the latest positioning point P3 in the past, and an error occurs by ΔP34. Further, since the mobile terminal C is moving at a high speed, the error ΔP56 is further increased. When the method (2) is used, since the base station requests the mobile terminal for positioning and the mobile terminal moves until the mobile terminal performs positioning and reports, the same error occurs. . In this case, extra traffic is generated for positioning.

  Actually, the terminal moves at various speeds, and the measurement period and the reporting period can be designated in various ways. Since the terminal reports positioning data etc. without being aware of the movement state, the base station receives measurement results from terminals in various movement states and measurement cycles, and there is variation in the positioning accuracy of uplink signals. . In order to reduce the error, a method of shortening the measurement period and the reporting period is also conceivable, but the load on the terminal increases and the amount of data increases. Therefore, when the positioning result at the mobile terminal is the uplink signal transmission position, the positioning accuracy is unclear and the reliability may be low. Therefore, in the third embodiment, a configuration example for improving the positioning accuracy corresponding to the acquired measurement data is shown.

  FIG. 12 is a block diagram showing a configuration of a wireless communication area status measurement system according to the third embodiment of the present invention. The third embodiment is an example in which constituent elements are newly added to the configuration of the second embodiment and the operation is partially changed. Here, detailed description of the same elements as those in the first and second embodiments described above is omitted.

  The base station 200 includes a terminal movement state detection unit 209, an uplink transmission position estimation unit 210, and a clock processing unit 215 in the wireless communication area situation measurement system of the third embodiment. In addition, although the structure provided with both the terminal movement state detection part 209 and the uplink transmission position estimation part 210 is shown here, only one of the terminal movement state detection part 209 and the uplink transmission position estimation part 210 is provided. There may be. The time processing unit 215 has a clock function and outputs time information to the measurement data association unit 207.

  The terminal movement state detection unit 209 analyzes the positioning data based on the positioning data for each mobile terminal, detects the movement state of the mobile terminal, and outputs movement state information. Examples of the moving state of the mobile terminal include an average moving speed, acceleration, and moving direction. The movement state information output by the terminal movement state detection unit 209 includes, for example, the movement speed and movement amount of the mobile terminal. Uplink transmission position estimation section 210 determines the uplink transmission position from which the uplink signal is transmitted from the mobile terminal based on the moving speed of the mobile terminal calculated by terminal movement state detection section 209 and the time information obtained from time processing section 215. To be estimated.

  In this configuration, the terminal movement state detection unit 209 receives a report of measurement data reception from the mobile terminal measurement data reception unit 205, and when the uplink signal measurement unit 204 measures the uplink signal, the movement corresponding to the measurement data is performed. Positioning data for each terminal is received from the mobile terminal measurement data receiving unit 205 and held. When the positioning data becomes two or more points, the moving speed and moving direction between the points are calculated in three dimensions and output to the measurement data associating unit 207b as moving state information. Here, when the positioning data is three-dimensional data of latitude, longitude, and altitude, the speed and direction are calculated and handled in three dimensions. When a large amount of positioning data is obtained, the moving speed between the two points is calculated in a plurality of sections, and the acceleration is estimated from the speed change for each section. Note that the positioning data for each terminal can be obtained not only when the measurement data is received but also by referring to a database later. This database may be provided in the base station.

  The movement state information calculated by the terminal movement state detection unit 209 is associated with the measurement data in the measurement data association unit 207b, output to the data management unit 302b of the data management / display device 300, and stored in the database 301 by the data management unit 302b. Saved. Then, the data analysis unit 303b refers to the movement state information attached to the measurement data, and determines whether to use for the processing. As an example of the determination condition, (c1) use only the data of the mobile terminal that has stopped, (c2) use only the data of the mobile terminal at a speed equal to or less than the specified speed, and (c3) the mobile terminal with a large change in the movement state This data is not used. That is, the data management unit 302b does not use data when the moving speed or moving amount of the mobile terminal is equal to or greater than a predetermined value. Thus, by excluding measurement data having a large moving speed and moving amount and not using it, an uplink signal can be analyzed with data having a certain positioning accuracy in consideration of a positioning error due to movement of the terminal.

  Next, uplink transmission position estimation processing by the uplink transmission position estimation unit 210 will be described. The uplink transmission position estimation unit 210 is configured to obtain the uplink signal obtained based on the moving speed of the mobile terminal obtained by the terminal movement state detection unit 209, the positioning time included in the uplink signal, and the time information output from the time processing unit 215. Using the reception time, the uplink transmission position at which the mobile terminal has performed uplink transmission is estimated and output to the measurement data association unit 207b.

  FIG. 13 is a flowchart illustrating a procedure of uplink transmission position estimation processing according to the third embodiment. First, an uplink signal is measured in the uplink signal measurement unit 204 (step S11), and the uplink transmission position estimation unit 210 receives the uplink measurement data of the measurement result and the mobile terminal 100 received by the mobile terminal measurement data reception unit 205. The downlink measurement data, the positioning data, and the terminal identification information from time and the time information of the time Tm output from the time processing unit 215 are stored (step S12).

  Then, uplink transmission position estimation section 210 determines whether or not there are two or more past measurement data and positioning data (step S13). If there are two or more positioning data, speed V1 between the positioning points in step S16. Is calculated. In this case, the positioning data of the latest latest positioning point saved in step S12 is P2, the positioning time is T2, the positioning data of the previous positioning point is P1, the positioning time is T1, and the average between P1 and P2 The speed V1 is obtained.

  On the other hand, when the positioning data is only one point, the mobile terminal measurement data receiving unit 205 waits for reception of the measurement data from the mobile terminal 100 in step S14, and when receiving the measurement data reception report, the measurement data, positioning data P2 and terminal identification information, and time information at time T2 are stored (step S15). In step S16, the speed V1 between the positioning points is calculated. In this case, the positioning data stored at step S12 is P1, the positioning time is T1, and then the average speed V1 between P1 and P2 is obtained using the positioning data P2 and positioning time T2 stored at step S15. become.

  FIG. 14 is a diagram for explaining the calculation processing of the speed between positioning data. As shown in FIG. 14A, when there are two or more past positioning data (in the case of directly proceeding to S16 from step S13 in FIG. 13), from the positions P2-P1 of the two positioning points and the time T2-T1. An average speed V1 between P1 and P2 is obtained. As shown in FIG. 14B, when the past positioning data is only one point (in the case of proceeding from steps S13 to S14, S15 to S16 in FIG. 13), the positioning data P2 of the subsequent positioning points, the positioning time T2 is acquired, and the position P2-P1 of the two positioning points, and the average speed V1 between time T2-T1 and P1-P2 are obtained. In this example, it is shown in two dimensions, but actually, it is calculated in three dimensions as Pn (X, Y, Z), n = 1, 2,. Note that the movement speed of the mobile terminal calculated by the terminal movement state detection unit 209 can also be used to calculate the speed between positioning points.

  Next, the uplink transmission position estimation unit 210 estimates the uplink transmission position Pm (step S17). Here, the uplink transmission position Pm is obtained by Pm = P2 + (Tm−T2) * V1 in the same manner in the case of FIG. 14A and the case of FIG. 14B. Then, the uplink transmission position estimation unit 210 stores the calculated uplink transmission position Pm and the uplink measurement data, and sends them to the measurement data association unit 207b (step S18).

  The measurement data associating unit 207b uses the position estimated by the uplink transmission position estimation unit 210 as the uplink transmission position, associates it with measurement data, and outputs it to the data management unit 302b of the data management / display device 300. In this way, by estimating the uplink transmission position at which the mobile terminal performed uplink transmission from the moving speed of the mobile terminal, that is, the positioning position and positioning time of the terminal and the reception time of the measurement data, positioning based on the movement of the terminal Error can be corrected and positioning accuracy can be improved.

  As described above, according to the third embodiment, the measurement data when the moving speed and the moving amount are large is not used, and the measurement data of the upstream signal is analyzed by the data having a certain positioning accuracy, thereby performing the measurement. Data position accuracy can be ensured. Further, by estimating the uplink transmission position from the moving speed of the mobile terminal, it is possible to correct a positioning error due to the movement of the terminal. Accordingly, it is possible to improve the position measurement accuracy in consideration of the positioning error due to the movement of the terminal.

(Fourth embodiment)
When measuring the radio wave condition in the service area in the mobile communication network and the area condition such as traffic information, in the conventional system, excessive data such as duplicate data is acquired, and the amount of measurement data becomes enormous. was there. FIG. 15 is a diagram showing an example of state transition of measurement start / stop in the conventional wireless communication area situation measurement system. Conventionally, as a condition for starting measurement from the collection stop state to the collection state, it is started manually by specifying the measurement area and time zone, or by call processing alert, major alert, resource usage status, call loss alert, weather condition Etc. are used. Further, as a condition for stopping the measurement from the collection state to the collection stop state, a manual stop or a stop by time is used.

  In this case, if measurement is started / stopped regardless of the number or distribution of mobile terminals, the processing load increases due to excessive data acquisition, waste of data storage media (capacity), wireless resources, wired transmission resources, etc. Resources are wasted. In addition, the measurement load may be concentrated on a specific terminal, which may affect the processing capability of the terminal or increase battery consumption.

  FIG. 16 is a diagram illustrating an example in which excessive data is acquired. Here, as shown in FIG. 16, a 1 / 6-circle service area including a station is considered. Collection of area status measurement data is performed by designating a time zone for each section divided by mesh data (national land numerical information) defined as a longitude and latitude grid on the map. Since the population density around the station is high and there are many terminals, if measurement data is collected by specifying only the time zone, the area around the station shown in the figure is collected excessively. It will be. This causes an increase in processing load as described above, waste of resources, and the like. At this time, if the acquired data amount is simply thinned, the information amount of the measurement data is reduced and the quality of the analysis result is deteriorated. Therefore, the fourth embodiment shows a configuration example in which an increase in processing load and waste of resources are eliminated and an appropriate amount of measurement data can be collected.

  FIG. 17 is a block diagram showing a configuration of a wireless communication area status measurement system according to the fourth embodiment of the present invention. The fourth embodiment is an example in which constituent elements are newly added to the configuration of the third embodiment and the operation is partially changed. The wireless communication area status measurement system according to the fourth embodiment collects data for enabling an appropriate amount of measurement data to be collected for at least one of uplink measurement data, downlink measurement data, and traffic measurement data. The main feature is the provision of a management unit. That is, the data collection management unit controls data collection so that, for example, at least one of the uplink measurement data, downlink measurement data, and traffic measurement data has a data amount equal to or less than a predetermined value. In addition, detailed description is abbreviate | omitted about the element similar to the 1st-3rd embodiment mentioned above here.

  In the wireless communication area status measurement system according to the fourth embodiment, the base station 200 includes a message monitoring unit 211. The message monitoring unit 211 compares the message data output from the communication protocol processing unit 203 with the messages specified in the measurement start / stop conditions, and if they match, the message monitoring unit 211 matches the measurement control unit 206c. Control the start / stop of the measurement by telling you. As a message used for starting / stopping measurement, a message for connection of wireless communication, a message for data transmission, a message for disconnection of wireless communication, etc. may be used. When data is sent or a handover is performed. Measure radio wave conditions such as time. The message monitoring unit 211 may be provided in any of the base station 200, the mobile terminal 100, and the data management / display device 300. Together with the message monitoring unit 211, the measurement control unit 206c and the measurement control unit 305c realize the function of the data collection management unit.

  Here, as a specific example of the processing operation of the fourth embodiment, a case where measurement data from establishment to completion of a radio channel between a base station and a mobile terminal will be described. FIG. 18 is a diagram illustrating a state transition of measurement start / stop in the fourth embodiment. First, radio bearer setup (RB setup: radio channel establishment setting) is set as a collection start condition and Radio bearer release (RB release: radio channel release) is set as a collection stop condition by the input unit 306 of the data management / display device 300. The measurement control unit 305c is instructed to start measurement. Then, a measurement start instruction including a collection start condition and a collection stop condition is sent from the measurement control unit 305c to the measurement control unit 206c of the base station 200.

  The message monitoring unit 211 shifts to the data collection standby mode (collection standby state) when the measurement control unit 206c is instructed to start data collection in the data collection stop mode (collection stop state). In the data collection standby mode, the message monitoring unit 211 monitors whether the RB setup message is output from the communication protocol processing unit 203. When the message monitoring unit 211 detects the RB setup message from the output of the communication protocol processing unit 203, the message monitoring unit 211 shifts from the data collection standby mode to the data collection mode (collection state), and includes the message number in the detection notification to perform measurement control. Notification to the unit 206c. Further, in the data collection mode, when the message monitoring unit 211 detects an RB release message from the output of the communication protocol processing unit 203, the message monitoring unit 211 shifts from the data collection mode to the data collection stop mode and performs measurement by including the message number in the detection notification. Notify the controller 206c.

  The measurement control unit 206c compares the message number included in the notification from the message monitoring unit 211 with the measurement condition, and starts and stops the measurement. Here, measurement is started when a measurement start message that matches the collection start condition is received, and measurement is stopped when a measurement stop message that matches the collection stop condition is received. In the data collection mode and the data collection standby mode, a time-out occurs after a preset time has elapsed and the previous mode is restored. Thereby, the measurement of the area status can be started when a message for setting up a wireless channel is received, and the measurement can be stopped when a message for opening a wireless channel is received.

  As described above, according to the fourth embodiment, the message exchanged between the base station and the mobile terminal is monitored, and an area at the time of a desired communication signal or operating state is obtained by receiving a preset specific message. The situation can be measured. Thereby, the data regarding specific call control can be efficiently acquired according to the purpose. For example, (d1) In the case of initial connection failure analysis, uplink measurement data and downlink measurement data are measured only during the initial connection procedure. (D2) In the case of traffic analysis, traffic measurement is performed only while user data is transmitted and received. Data can be collected under specific conditions such as measuring data. Therefore, measurement information can be efficiently collected depending on the purpose of measurement, and wasteful data acquisition can be eliminated without degrading the quality of analysis of measurement results. As a result, an increase in the processing load of the system and waste of resources can be suppressed, and an appropriate amount of measurement data can be collected.

(Fifth embodiment)
FIG. 19 is a block diagram showing a configuration of a wireless communication area status measurement system according to the fifth embodiment of the present invention. The fifth embodiment is an example in which the operation is partially changed with respect to the configuration of the fourth embodiment. In addition, detailed description is abbreviate | omitted about the element similar to the 1st-4th embodiment mentioned above here.

  The wireless communication area status measurement system of the fifth embodiment is obtained by changing the operations of the data management unit 302d and the measurement control unit 305d in the data management / display device 300. In this embodiment, the measurement area in the mobile communication network is partitioned and managed, and the data in the partition where the number of data reaches the planned number is not subjected to new measurement. Here, as the section data for setting each section, mesh data by the Ministry of Land, Infrastructure, Transport and Tourism may be used. The data management unit 302d and the measurement control unit 305d realize the function of the data collection management unit, and the data management unit 302d and the input unit 306 realize the function of the measurement upper limit setting unit in the data collection management unit.

  A specific example of the processing operation of the fifth embodiment will be described. First, the measurement number upper limit value of the section in the service area is set by the input unit 306 of the data management / display apparatus 300, and is stored in the collection management table of the database 301 through the data management unit 302d. The upper limit value of the number of measurements can be set in a service area or for each section. When receiving a data collection start instruction from the measurement control unit 305d, the data management unit 302d initializes the collection management table of the database 301. When the data management unit 302d receives the association data or the measurement data from the measurement data association unit 207 of the base station 200, the data management unit 302d refers to the positioning data corresponding to the received data, and the target section of the collection management table of the database 301 After the number of collected data is counted up, it is compared with the set maximum number of measurements.

  Here, when the measurement number upper limit value has not been reached, the data management unit 302 d stores association data, measurement data, positioning data, and the like in the database 301. When the number of collected data in the measurement section reaches the measurement number upper limit, the measurement control unit 305d is notified to stop collecting data in the section. When the measurement control unit 305d receives a data collection stop notification from the data management unit 302d, the measurement control unit 305d transmits measurement stop information regarding the corresponding partition to the measurement control unit 206d of the base station 200. When the measurement control unit 206d of the base station 200 receives the measurement stop information, the measurement control unit 206d notifies the communication protocol processing unit 203 of this and also notifies the mobile terminal 100 by the wireless transmission unit 202.

  FIG. 20 is a diagram for explaining data collection management processing for each section in the service area. FIG. 20 shows a state in which a 1 / 6-circle service area is divided into a plurality of sections. The upper section of each section indicates a section number, the lower right section indicates the upper limit value of the number of measurements for each section, and the left section collects. The number of data is shown. The sections indicated by diagonal lines indicate a state in which the number of collected data has reached the upper limit of the number of measurements and measurement stop information has been issued.

  Note that the upper limit of the number of measurements that determines the number of collected data for each section can be set automatically or according to changes in the measured values, depending on the measured values of the acquired measurement data. For example, the data management unit 302d has a function for setting the upper limit of the number of measurements, and the upper limit of the number of measurements is automatically set according to the measurement value of the measurement data. The upper limit value of the measurement number may be changed according to the situation in the service area such as a change in the measurement value, such as increasing the number of collections in an area where the change in the measurement value is large.

  As described above, according to the fifth embodiment, an appropriate amount of data is collected by setting the number of collections of measurement data for each section and stopping the measurement of the section when the upper limit of the number of collection is reached. Can do. For example, excessive data acquisition from an area with high population density can be eliminated. In addition, the number of data required for service area analysis can be automatically acquired. Therefore, measurement information can be efficiently collected depending on the purpose of measurement, and wasteful data acquisition can be eliminated without degrading the quality of analysis of measurement results. As a result, an increase in the processing load of the system and waste of resources can be suppressed, and an appropriate amount of measurement data can be collected.

(Sixth embodiment)
FIG. 21 is a block diagram showing a configuration of a wireless communication area status measurement system according to the sixth embodiment of the present invention. The sixth embodiment is an example in which components are newly added to the configuration of the fourth embodiment and the operation is partially changed. In addition, detailed description is abbreviate | omitted about the element similar to the 1st-4th embodiment mentioned above here.

  The wireless communication area situation measurement system of the sixth embodiment includes a group setting unit 212 in the base station 200 and a group number calculation unit 107 in the mobile terminal 100. In the present embodiment, mobile terminals are grouped and an appropriate amount of measurement data is collected. The group setting unit 212 of the base station 200 outputs group setting information for notifying the grouping method (grouping setting) of the mobile terminals and the designation of the group to be measured, and notifies the mobile terminal 100 of the group setting information. The group number calculation unit 107 of the mobile terminal 100 receives the group setting information, calculates the group number of the own terminal, and determines whether the group is a measurement target group.

  The measurement control unit 206e of the base station 200 transmits a measurement start / stop instruction for each group to the mobile terminal 100. When the measurement start / stop unit 106e of the mobile terminal 100 is the measurement target group based on the measurement start / stop instruction for each group from the measurement control unit 206e and the group determination result in the group number calculation unit 107 Causes the measurement process to be executed. In addition, the measurement control unit 206e of the base station 200 controls measurement data reception and uplink signal measurement processing for the mobile terminals in the measurement target group. The group setting unit 212, the group number calculation unit 107, the measurement control unit 206e, and the measurement start / stop unit 106e realize the function of the data collection management unit, and the data collection management unit is configured by the group setting unit 212 and the group number calculation unit 107. This implements the function of the group setting unit.

  The group setting unit 212 may be provided in either the base station 200 or the data management / display device 300. The function for determining the measurement target group is that the grouping setting, selection of the measurement target group, and determination of the mobile terminal to be measured are all performed in the base station 200 or the data management / display device 300, and only the mobile terminal to be measured You may make it send a measurement start instruction to. In addition, the mobile terminal 100 may set the grouping by itself without notifying the grouping method from the base station 200 or the like, or the mobile terminal 100 may independently generate a random number to set or change the group. It is also possible to do this. Further, the mobile terminal of the measurement target group may be determined by the terminal itself, and the fact may be notified to the base station 200.

  Next, a specific example of the processing operation of the sixth embodiment will be shown. FIG. 22 is a diagram for explaining processing related to setting of grouping of mobile terminals and determination of measurement target groups. In this example, a terminal-specific number such as IMSI (International Mobile Subscriber Identity) is used as the terminal number of each mobile terminal, and the group number is determined by the remainder of the terminal number divided by 3 (terminal number mod 3). Show.

  The base station 200 sets the number of groups (3 in this example) for each mobile terminal 100 in the service area by using the group setting unit 212, and sends the group setting information including the number of groups to the communication protocol processing unit 203 and the wireless Informs the mobile terminal 100 via the transmission unit 202. The mobile terminal 100 receives the group setting information, and the group number calculation unit 107 calculates its own group number from its own terminal number and the number of received groups. At this time, as shown in FIG. 22 (a), for example, each mobile terminal with terminal numbers 1 to 10 calculates and determines its own group numbers 0, 1, and 2, respectively.

  Then, the base station 200 transmits the measurement group number and measurement conditions (measurement period, measurement time, etc.) to the mobile terminal 100 in the measurement start message. When receiving the measurement start message, the mobile terminal 100 confirms the measurement group number and, when the mobile terminal 100 matches the group number of the own terminal, starts the measurement according to the measurement condition and performs the measurement until the measurement end condition is satisfied. The base station 200 causes the other mobile terminals in the service area to perform measurement by changing the measurement group number when the current measurement group ends measurement or at regular time intervals. At this time, as shown in FIG. 22B, measurement group numbers 0, 1, and 2 are sequentially changed, and measurement data is collected while switching the group of terminals that perform measurement.

  Each mobile terminal in the service area may vary in reception status or receive performance may vary from terminal to terminal, but it is possible to measure terminals randomly by performing measurement while switching measurement groups as described above. It can be performed. Thereby, diversity can be given to measurement data and the analysis result of statistically favorable measurement data can be obtained.

  As described above, according to the sixth embodiment, by performing grouping of mobile terminals to be measured, it is possible to control the measurement amount per terminal when data is randomly acquired over the entire service area. In addition, it is possible to prevent concentration of measurement processing on a specific terminal, and it is possible to collect the necessary number of data while suppressing the amount of measurement processing per terminal. Therefore, an increase in the processing load of the system and waste of resources can be suppressed, and an appropriate amount of measurement data can be collected.

(Seventh embodiment)
FIG. 23 is a block diagram showing a configuration of a wireless communication area status measurement system according to the seventh embodiment of the present invention. The seventh embodiment is an example in which components are newly added to the configuration of the fourth embodiment and the operation is partially changed. In addition, detailed description is abbreviate | omitted about the element similar to the 1st-4th embodiment mentioned above here.

  The mobile communication area status measurement system according to the seventh embodiment includes a battery monitoring unit 108 in the mobile terminal 100. If data collection is performed without considering the status and processing of the mobile terminal, the battery of the terminal will be wasted and the terminal processing capacity will be reduced. There is a problem that it cannot be determined whether the cause of deterioration or interruption is a battery exhaustion or radio wave failure. Therefore, in the seventh embodiment, a configuration is shown in which a battery monitoring unit 108 is provided in each mobile terminal and measurement start / stop is controlled in accordance with the state of the battery. Together with the battery monitoring unit 108, the measurement start / stop unit 106f and the measurement control unit 206f realize the function of the data collection management unit.

  The battery monitoring unit 108 monitors the remaining battery level in each terminal, and notifies the measurement start / stop unit 106f when the remaining battery level is low. When the measurement start / stop unit 106f receives the notification that the remaining battery level is low, the measurement start / stop unit 106f does not start the measurement if it is not currently measured, and interrupts the measurement if the measurement is in progress. Further, the measurement start / stop unit 106f reports the interruption of measurement due to a battery factor to the base station 200. The measurement control unit 206f of the base station 200 receives the measurement interruption report from the mobile terminal 100 and grasps the measurement execution status of each mobile terminal.

  As described above, according to the seventh embodiment, by controlling the start / stop of the measurement according to the state of the battery of each mobile terminal, the battery running out due to the measurement of the area situation is eliminated, and the original communication service is hindered. Can be deterred. In addition, it is possible to eliminate the cause of connection failure due to battery exhaustion, and it is easy to determine the factor based on the radio wave condition or traffic condition.

  It should be noted that the present invention is not limited to those shown in the above-described embodiments, and those skilled in the art can also make changes and applications based on the description in the specification and well-known techniques. Yes, included in the scope of protection.

  The present invention is capable of grasping various problems in a service area of a mobile communication network, and has the effect of not only specifying a problem occurrence location but also specifying a problem occurrence factor. It is useful as a radio communication area status measurement system, a radio communication area status measurement method, a base station, and the like that measure the radio wave status in the service area and the area status such as traffic information.

  The present invention relates to a radio communication area status measurement system, a radio communication area status measurement method, and a base station for measuring radio wave status in a service area in a mobile communication network, area status such as traffic information.

  Conventionally, in order to design a mobile communication network and optimize a service area, the electric vehicle is periodically run to measure radio wave conditions and traffic information. Or it went to the field based on the complaint from the user, and the radio wave condition and traffic information were measured with the measuring instrument. In the station design (cell design), considering the installation environment (terrain, building, population, etc.), the specifications of the radio base stations (transmission output, antenna type, antenna height, radio parameters) and the arrangement of the radio base stations Design (location, number). Even after setting up a radio base station, grasp the surrounding environmental changes (building construction, installation of base stations of other operators, traffic concentration, etc.), change transmission power, change antenna tilt angle, change Neighbor Cell List, It is necessary to perform adjustment work such as adding repeaters to optimize the service area. It is necessary to keep track of environmental changes on a continuous basis.

As a method for measuring an area situation such as a radio wave situation in a service area, it has been proposed to use information from a terminal instead of an electric vehicle or a measuring instrument. For example, in Patent Document 1, as a radio wave condition measurement system and radio wave condition measurement method in a mobile communication network, data necessary for radio wave measurement is obtained from normal communication of a mobile terminal of a general user without using an electric vehicle. Collecting and grasping the radio wave condition in the mobile communication network are disclosed. Further, in Patent Document 2, as a mobile communication system and its service area quality information collection method, in order to identify the cause of deterioration of the radio wave reception state, not only the terminal location information and radio wave reception level, but also the bit error rate Those that also measure such quality indicators are disclosed.
Japanese Patent No. 3495025 Japanese Patent No. 3344365

  In the above conventional example, when information from the terminal is used, the downlink signal from the base station to the terminal is only measured. In this way, when measuring only the downlink signal, it is possible to grasp the location where the radio wave condition is bad, but it is possible to grasp the occurrence and distribution of various problems such as traffic concentration status, and identify the cause of the problem It was difficult to do.

Depending on the cause of deterioration in communication quality, the quality of the downlink signal is not affected, but the quality of the uplink signal may be affected. In addition, as a communication method that expands the third generation mobile phone (3G), as in the LTE (Long Term Evolution) system that is being studied by 3GPP (3rd Generation Partnership Project), an international standardization organization for mobile phones, In systems where the communication method differs between upstream and downstream, evaluation of the communication quality of the upstream signal itself has become an important situation.

  The present invention has been made in view of the above circumstances, and can identify various problems in a service area of a mobile communication network, and can identify not only the problem location but also the cause of the problem. An object of the present invention is to provide a wireless communication area state measurement system, a wireless communication area state measurement method, and a base station.

A wireless communication area status measurement system according to the present invention includes a downlink signal measurement unit that measures downlink measurement data related to a radio signal status of a downlink signal from a base station to a mobile terminal in a service area of a mobile communication network, and the mobile terminal An uplink signal measurement unit that measures uplink measurement data related to radio conditions of an uplink signal to the base station, a positioning processing unit that measures positioning data related to the position of the mobile terminal, the uplink measurement data, and the downlink And a measurement data association unit for associating the measurement data and the positioning data.
Thus, by associating the downlink measurement data and the uplink measurement data, it is possible to grasp various wide-ranging problems in the service area of the mobile communication network. Also, it is possible to specify not only the problem occurrence location but also the problem occurrence factor.

Further, the present invention is the above wireless communication area situation measurement system, comprising a traffic measurement unit that measures traffic measurement data related to a traffic situation in at least one of the uplink signal and the downlink signal, and the measurement data association unit is The traffic measurement data also includes data for association.
This makes it possible to grasp and identify a wider range of factors than in the case of grasping only the downlink radio wave condition. In addition to specifying the problem occurrence location in the service area, it is possible to specify more detailed problem occurrence factors.

The present invention is also the above wireless communication area status measurement system, wherein a terminal movement state detection unit that detects a movement speed or movement amount of the mobile terminal based on the positioning data; And a data management unit that does not use data when the movement amount is a predetermined value or more.
As a result, measurement data can be analyzed with data having a certain positioning accuracy, and the positional accuracy of the measurement data can be ensured. The predetermined value is appropriately determined according to the accuracy of the desired positioning information.

Further, the present invention is the above-described wireless communication area situation measurement system, wherein a terminal movement state detection unit that detects a movement state of the mobile terminal based on the positioning data, the detected movement state, and the uplink signal And an uplink transmission position estimation unit that estimates the transmission position of the uplink signal based on time information at which measurement data is acquired.
Thereby, the positioning error due to the movement of the terminal can be corrected, and the position measurement accuracy can be improved in consideration of the positioning error.

Further, the present invention is the above wireless communication area status measurement system, wherein at least one of the uplink measurement data, the downlink measurement data, and the traffic measurement data has a data amount equal to or less than a predetermined value. Including a data collection management unit for controlling data collection.
As a result, measurement information can be efficiently collected, and useless data acquisition can be eliminated without degrading the quality of analysis of measurement results. In addition, an increase in processing load on the system and waste of resources can be suppressed, and an appropriate amount of measurement data can be collected.

  The present invention is the above-described wireless communication area status measurement system, wherein the data collection management unit includes a message monitoring unit that detects a predetermined message exchanged between a base station and a mobile terminal, and the predetermined And a measurement control unit that controls the start and stop of the measurement of the uplink signal and the downlink signal according to the detection result of the message.

Further, the present invention is the above-described wireless communication area status measurement system, wherein the data collection management unit sets an upper limit of the number of measurements for each section dividing the service area of the mobile communication network And a measurement control unit that stops the measurement of the corresponding section when the measurement number upper limit is reached.

  Further, the present invention is the above-described wireless communication area status measurement system, wherein the data collection management unit includes a group setting unit that groups mobile terminals in a service area of a mobile communication network, and the set A measurement control unit that controls start and stop of the measurement of the uplink signal and the downlink signal may be provided for each group.

  Further, the present invention is the above wireless communication area status measurement system, wherein the data collection management unit includes a battery monitoring unit that monitors a battery of the mobile terminal, and a case where the remaining battery level is equal to or less than a predetermined value. A measurement control unit that stops the measurement in the corresponding mobile terminal.

  Further, the present invention is the above-described wireless communication area situation measurement system, wherein the mobile terminal includes the downlink signal measurement unit and the positioning processing unit, and the base station associates the uplink signal measurement unit and the measurement data. And a mobile terminal measurement data receiving unit that receives the downlink measurement data and the positioning data measured at the mobile terminal.

  In addition, the present invention provides any one of the above wireless communication area status measurement systems, comprising a data analysis unit that analyzes the uplink measurement data, the downlink measurement data, and the positioning data associated with each other by the association unit including.

The base station of the present invention is a base station used in a radio communication area status measurement system for measuring a status in a service area in a mobile communication network, and an uplink signal from a mobile terminal in the service area of the mobile communication network An uplink signal measurement unit for measuring uplink measurement data related to the radio wave condition of the mobile station, downlink measurement data related to the radio wave condition of the downlink signal from the base station to the mobile terminal measured at the mobile terminal, and the mobile terminal A mobile terminal measurement data receiving unit that receives positioning data related to the position of the mobile station, and a measurement data associating unit that associates the uplink measurement data, the downlink measurement data, and the positioning data.
Thus, by associating the downlink measurement data and the uplink measurement data, it is possible to grasp various wide-ranging problems in the service area of the mobile communication network. Also, it is possible to specify not only the problem occurrence location but also the problem occurrence factor.

Further, the present invention is the above-described base station, further comprising a traffic measurement unit that measures traffic measurement data related to traffic conditions in the uplink signal, wherein the measurement data association unit also associates the traffic measurement data together including.
This makes it possible to grasp and identify a wider range of factors than in the case of grasping only the downlink radio wave condition. In addition to specifying the problem occurrence location in the service area, it is possible to specify more detailed problem occurrence factors.

  The radio communication area status measurement method of the present invention comprises an uplink signal measurement step for measuring uplink measurement data related to radio wave status of an uplink signal from a mobile terminal to a base station in a service area of a mobile communication network, and from the base station A downlink signal measurement step for measuring downlink measurement data related to a radio wave condition of a downlink signal to the mobile terminal, a positioning step for measuring positioning data related to the position of the mobile terminal, the uplink measurement data, and the downlink measurement Data and a measurement data association step for associating the positioning data.

  Further, the present invention is the above wireless communication area situation measuring method, comprising a data analysis step of analyzing the uplink measurement data, the downlink measurement data, and the positioning data associated in the measurement data association step including.

  According to the present invention, it is possible to grasp various problems in a service area of a mobile communication network, and not only a problem occurrence location but also a problem occurrence factor can be identified, A communication area condition measuring method and a base station can be provided.

(First embodiment)
FIG. 1 is a block diagram showing a configuration of a wireless communication area situation measurement system according to the first embodiment of the present invention, and FIG. 2 shows a processing procedure and data flow of the wireless communication area situation measurement system according to the first embodiment. FIG.

  The wireless communication area status measurement system of this embodiment includes a mobile terminal 100, a base station 200, and a data management / display device 300. Although only one mobile terminal 100, base station 200, etc. are shown in the figure, a necessary number of base stations 200 and data management / display devices 300 are provided as appropriate in the mobile communication network, and the mobile terminal 100 has a service area ( There is an appropriate number in the communication area.

  The mobile terminal 100 is a portable wireless communication terminal device that has a wireless communication function such as a mobile phone and a PDA and moves within a service area. The mobile terminal 100 includes a wireless reception unit 101, a wireless transmission unit 102, a communication protocol processing unit 103, a downlink signal, and the like. A measurement unit 104, a positioning processing unit 105, and a measurement start / stop unit 106 are provided.

  The wireless reception unit 101 receives a downlink radio wave from the base station 200, performs demodulation / decoding processing on the received signal, and then transmits received data to the communication protocol processing unit 103. The wireless transmission unit 102 performs encoding / modulation processing on the transmission data transmitted from the communication protocol processing unit 103, and then transmits a transmission signal to the base station 200 using an uplink radio wave. These wireless reception unit 101 and wireless transmission unit 102 realize the layer 1 function of the OSI reference model, and need only realize the normal wireless communication function of the mobile terminal, and are special means for the present invention. There is no need.

  The communication protocol processing unit 103 performs processing of a communication protocol for realizing voice call and data communication in a mobile communication network. The communication protocol processing unit 103 uses the radio reception unit 101 and the radio transmission unit 102 on the mobile terminal 100 side, and the radio reception unit 201 and the radio transmission unit 202 on the base station 200 side to communicate on the base station 200 side. Communication data can be transmitted to and received from the protocol processing unit 203. The communication protocol processing unit 103 realizes the functions of the OSI reference model layer 2 or higher, and is only required to realize the normal communication function of the mobile terminal, and need not be a special means for the present invention. As a specific example of the communication protocol, WCDMA MAC / RLC / RRC or the like is used.

  The downlink signal measurement unit 104 measures an amount (downlink measurement data) representing the radio wave condition in the downlink direction from the reception data received by the wireless reception unit 101. The downlink signal measurement unit 104 uses the communication protocol processing unit 103, the wireless transmission unit 102 on the mobile terminal 100 side, the wireless reception unit 201 on the base station 200 side, and the communication protocol processing unit 203 to It is possible to transmit the downlink measurement data to the mobile terminal measurement data receiving unit 205.

The “downlink measurement data” measured by the downlink signal measurement unit 104 includes, for example, a downlink reception level, a downlink interference amount, and a downlink error rate described below. As the downlink reception level, for example,
RSCP (received signal code power)
RSRP (reference symbol received power)
RSSI (received signal strength indicator)
and so on.
Further, as the amount of downlink interference, for example,
SIR (signal to interference ratio)
Ec / No (the received energy per chip divided by the power density in the
frequency band, ratio of received energy and received power density per chip within the frequency band)
ISCP (interference signal code power)
and so on.
Also, as the downlink error rate, for example,
BLER (block error rate)
BER (bit error rate)
and so on. These are described in 3GPP TS 25.302 (Service provided by the physical layer) and the like.

  The downlink measurement data may be an average value of a plurality of measurements. In addition, if not only downlink radio waves from the communicating base station but also downlink radio waves from other peripheral base stations can be measured, these may be included in the measurement target.

  The positioning processing unit 105 measures the position of the mobile terminal 100. The positioning processing unit 105 uses the communication protocol processing unit 103, the wireless transmission unit 102 on the mobile terminal 100 side, the wireless reception unit 201 on the base station 200 side, and the communication protocol processing unit 203 on the base station 200 side. It is possible to transmit positioning data to the mobile terminal measurement data receiving unit 205. This positioning processing unit 105 is standardized by third-generation mobile terminals (standardized by 3GPP), and is based on positioning using radio waves from GPS satellites, positioning based on radio wave arrival time differences between base stations, and the like. The existing latitude, longitude, and altitude are measured to obtain positioning data as position information.

  The measurement start / stop unit 106 instructs the downlink signal measurement unit 104 and the positioning processing unit 105 to start / stop measurement. The measurement start / stop unit 106 outputs a measurement start or stop instruction at a preset timing internally or at a timing specified by the measurement control unit 206 of the base station 200. The timing preset in the interior may be at regular intervals, at a specific time, or when some event occurs. Examples of event occurrence include (a1) when a mobile terminal is turned on, (a2) a specific communication message (for example, “RRC Connection Setup” or “Radio”) when the mobile terminal is turned on. It is used when receiving Bearer Setup "). As an example of an event for stopping measurement, (b1) when there is no change in positioning data (for example, when the change value of positioning data is within a specified value for three consecutive times), (b2) a specific communication message ( For example, when "RRC Connection Release" or "Radio Bearer Release") is received.

  In the above configuration, the communication protocol processing unit 103, the downlink signal measurement unit 104, the positioning processing unit 105, the measurement start / stop unit 106, and the like execute a predetermined program using a processor and a memory provided in the mobile terminal 100. Thus, the function of each unit is realized.

  The base station 200 includes a radio reception unit 201, a radio transmission unit 202, a communication protocol processing unit 203, an uplink signal measurement unit 204, a mobile terminal measurement data reception unit 205, a measurement control unit 206, and a measurement data association unit 207. The

The wireless reception unit 201 receives the uplink radio wave from the mobile terminal 100, performs demodulation / decoding processing on the received signal, and then transmits the received data to the communication protocol processing unit 203. Wireless transmission unit 202
Transmits and transmits a transmission signal to the mobile terminal 100 using a downlink radio wave after encoding / modulating the transmission data transmitted from the communication protocol processing unit 203. The wireless receiving unit 201 and the wireless transmitting unit 202 realize the layer 1 function of the OSI reference model, and need only realize the normal wireless communication function of the mobile terminal, and are special means for the present invention. There is no need. In the present embodiment, the radio reception unit 201 transmits, as uplink reception data, for example, a spread code corresponding to an individual mobile terminal one-to-one as an uplink reception data, to the communication protocol processing unit 203 and the uplink signal measurement unit 204. The example which provides the signal (example of a WCDMA system) de-spreaded according to FIG.

  The communication protocol processing unit 203 performs processing of a communication protocol for realizing voice communication and data communication in a mobile communication network. The communication protocol processing unit 203 uses the radio reception unit 201 and radio transmission unit 202 on the base station 200 side, and the radio reception unit 101 and radio transmission unit 102 on the mobile terminal 100 side to communicate on the mobile terminal 100 side. Communication data can be transmitted to and received from the protocol processing unit 103. The communication protocol processing unit 203 realizes the functions of the OSI reference model layer 2 or higher, and is only required to realize the normal communication function of the mobile terminal, and need not be a special means for the present invention. As a specific example of the communication protocol, WCDMA MAC / RLC / RRC or the like is used.

The uplink signal measurement unit 204 measures an amount (uplink measurement data) representing an uplink radio wave condition from the reception data received by the wireless reception unit 201. In the uplink signal measurement unit 204, the “uplink measurement data” measured with reference to the uplink reception data provided from the radio reception unit 201 is, for example, the uplink reception level and the uplink described below as in the case of the downlink measurement data. Includes interference and uplink error rate. As an upstream reception level, for example,
RSCP (received signal code power)
RSRP (reference symbol received power)
RSSI (received signal strength indicator)
and so on.
Further, as an uplink interference amount, for example,
SIR (signal to interference ratio)
Ec / No (the received energy per chip divided by the power density in the
frequency band, ratio of received energy and received power density per chip within the frequency band)
ISCP (interference signal code power)
and so on.
Also, as an upstream error rate, for example,
BLER (block error rate)
BER (bit error rate)
and so on.

  These uplink measurement data are stored in a memory or the like in the uplink signal measurement unit 204 in association with identification information of the transmission source mobile terminal (for example, in the example of the WCDMA system, a spread code corresponding to each individual mobile terminal). The data is stored in the data storage area by the unit or sent to the measurement data association unit 207.

The mobile terminal measurement data receiving unit 205 receives downlink measurement data and positioning data measured by the mobile terminal 100. The downlink measurement data and positioning data received by the mobile terminal measurement data reception unit 205 are associated with the uplink measurement data measured by the uplink signal measurement unit 204 by the measurement data association unit 207. The mobile terminal measurement data receiving unit 205 uses the communication protocol processing unit 103 and the wireless transmission unit 102 on the mobile terminal 100 side, and the wireless reception unit 201 and the communication protocol processing unit 203 on the base station 200 side to It is possible to receive positioning data from the positioning processing unit 105 on the 100 side and downlink measurement data from the downlink signal measuring unit 104.

  In the example of the WCDMA system, the mobile terminal measurement data receiving unit 205 receives positioning data and downlink measurement data from the mobile terminal using an RRC measurement report message. Since these data are received using the communication protocol processing unit 103, the wireless transmission unit 102 on the mobile terminal 100 side, and the wireless reception unit 201 and the communication protocol processing unit 203 on the base station 200 side, the mobile terminal measurement The data reception unit 205 can obtain the spreading code corresponding to the mobile terminal that is the transmission source of the measurement report message from the communication protocol processing unit 203. The received positioning data and downlink measurement data are associated with identification information of the source mobile terminal (for example, a one-to-one spread code corresponding to an individual mobile terminal), and a storage unit such as a memory in the mobile terminal measurement data receiving unit 205 Or stored in the data storage area or sent to the measurement data association unit 207.

  The measurement control unit 206 issues a measurement start / stop instruction to the uplink signal measurement unit 204 in the base station 200 and the measurement start / stop unit 106 of the mobile terminal 100. The measurement control unit 206 outputs a measurement start or stop instruction at a preset timing internally or at a timing instructed from the measurement control unit 305 of the data management / display device 300. In order for the measurement control unit 206 to send a measurement control signal to the mobile terminal 100, the communication protocol processing unit 203 on the base station 200 side, the wireless transmission unit 202, the wireless reception unit 101 on the mobile terminal 100 side, and the communication protocol processing unit 103 It is possible to use this.

The timing preset in the measurement control unit 206 for outputting the measurement start / stop instruction may be a fixed time, a specific time or the like, or may be when some event occurs. Examples of event occurrence include (a1) when a predetermined call processing alarm occurs, (a2) when uplink received power reaches a predetermined level, (a3) downlink When the transmission power reaches a predetermined level, (a4) when the number of connections between the base station and the mobile terminal reaches a predetermined number is used. Examples of events for stopping measurement include (b1) when a predetermined call processing load threshold is exceeded, (b2) when uplink reception power divides a predetermined level, and (b3) downlink transmission power is a predetermined level. (B4) is used when the number of connections between the base station and the mobile terminal is a predetermined number.

  The measurement data association unit 207 associates positioning data, downlink measurement data, and uplink measurement data. The measurement data association unit 207 includes a data storage area by a storage unit such as a memory for storing association information. Further, the measurement data association unit 207 transmits the association information and the measurement data to the data management unit 302 of the data management / display device 300. Although not shown, a time processing unit that has a clock function and outputs time information to the measurement data association unit 207 may be further included.

  The measurement data association unit 207 refers to the data storage areas of the uplink signal measurement unit 204 and the mobile terminal measurement data reception unit 205, and if there is the same identification information of the mobile terminal, the positioning data, the downlink measurement data, Correlate uplink measurement data. The association may be performed based on the identification information of the mobile terminal, but the radio signal measurement time of the uplink signal or downlink signal or the reception time at the mobile terminal measurement data receiving unit 205 may be used. In the measurement data association unit 207, when storing data in a data storage area by a storage unit such as a memory, only the association information is stored, and the measurement data body is stored in the uplink signal measurement unit 204 and the mobile terminal measurement data reception unit 205. It may be held as it is, or not only the association information but also the measurement data body may be stored together. Here, the “association information” may include table information indicating the type and number of each associated data, a pointer indicating the storage location of each data, and the like.

  In the above configuration, the communication protocol processing unit 203, the uplink signal measurement unit 204, the mobile terminal measurement data reception unit 205, the measurement control unit 206, the measurement data association unit 207, and the like use a processor and a memory provided in the base station 200. The function of each unit is realized by executing a predetermined program.

  Among the units constituting the base station 200, each unit other than the radio receiving unit 201 and the radio transmitting unit 202 is a device other than the base station constituting the radio access network, such as a radio network controller (RNC). It may be provided by mounting. Of the units constituting the base station 200, the units other than the radio receiving unit 201, the radio transmitting unit 202, and the communication protocol processing unit 203 are used as the data management / display device 300 or the base station maintenance console device. Etc. may be provided.

  The data management / display device 300 includes a database 301, a data management unit 302, a data analysis unit 303, a display unit 304, a measurement control unit 305, and an input unit 306. The data management / display device 300 may be, for example, a device in which the above-described components are additionally mounted on a normal network management device that monitors a mobile communication network. It need not be a special device for the present invention.

  The data management unit 302 receives positioning data, downlink measurement data, uplink measurement data association information, and measurement data from the measurement data association unit 207 of the base station 200, and performs addition, deletion, search, and the like to the database 301. To manage these data. The data management unit 302 may target only one base station or a plurality of base stations.

  The data analysis unit 303 performs statistical processing and analysis of data transmitted from the data management unit 302 and passes the processing result to the display unit 304. The display unit 304 includes a display device such as a liquid crystal display panel, and displays data passed from the data analysis unit 303 as characters, numbers, graphs, images, and the like. The display unit 304 can also display data directly passed from the data management unit 302 without passing through the data analysis unit 303.

  The measurement control unit 305 gives a measurement start / stop instruction to the measurement control unit 206 of the base station 200. The measurement control unit 305 outputs a measurement start or stop instruction at a preset timing inside or by an input from the input unit 306. The measurement control unit 305 may target only one base station or a plurality of base stations.

  The input unit 306 has an input device such as a keyboard and a pointing device, and inputs various operation instructions and setting instructions to the system.

  In the above configuration, the data management unit 302, the data analysis unit 303, the measurement control unit 305, and the like perform functions of each unit by executing predetermined programs using a processor and a memory provided in the data management / display device 300. Realized.

  Each unit constituting the data management / display apparatus 300 may be mounted and provided in a base station, a radio network controller (RNC), a maintenance console apparatus of the base station, or the like. The communication path with the data management / display apparatus 300 base station 200 is not particularly limited.

Next, a specific processing example of the first embodiment will be described. Here, a flow of processing when a measurement start instruction is issued from the measurement control unit 305 of the data management / display device 300 is shown.

  First, a measurement start instruction by a measurement control signal is issued from the measurement control unit 305 of the data management / display apparatus 300 to the measurement control unit 206 of the base station 200 (S1 in FIG. 2). This measurement start instruction includes instruction contents relating to measurement timing such as measurement at regular intervals.

  Then, a measurement start instruction by the measurement control signal is transmitted from the measurement control unit 206 of the base station 200 to the uplink signal measurement unit 204 of the base station 200 and the measurement start / stop unit 106 of the mobile terminal 100 (S2 in FIG. 2). Here, the transmission of the measurement start instruction from the base station 200 to the mobile terminal 100 is actually performed by the communication protocol processing unit 203, the wireless transmission unit 202 on the base station 200 side, and the wireless reception unit 101 on the mobile terminal 100 side, The communication protocol processing unit 103 is used.

  Next, the uplink signal measurement unit 204 starts measuring the amount representing the uplink radio wave condition using the uplink reception data received by the wireless reception unit 201 (S3 in FIG. 2). FIG. 3 is a diagram showing an example of uplink measurement data measured and acquired by the uplink signal measurement unit 204. As shown in FIG. 3, for example, the uplink signal measurement unit 204 measures and acquires identification information (spread code), uplink reception level (RSCP), and uplink interference amount (SIR) of a transmission source mobile terminal as uplink measurement data. The data is stored in its own data storage area or transmitted to the measurement data association unit 207.

  Further, a measurement start instruction is issued from the measurement start / stop unit 106 of the mobile terminal 100 to the positioning processing unit 105 and the downlink signal measurement unit 104 (S4 in FIG. 2). The positioning processing unit 105 starts measuring the position of the mobile terminal 100. Then, the downlink signal measurement unit 104 starts measuring the amount representing the downlink radio wave status from the downlink reception data received by the wireless reception unit 101 (S5 in FIG. 2).

  Thereafter, the positioning data measured by the positioning processing unit 105 of the mobile terminal 100 and the downlink measurement data measured by the downlink signal measuring unit 104 are transmitted to the mobile terminal measurement data receiving unit 205 of the base station 200 (FIG. 2 S6). Here, the transmission of positioning data and downlink measurement data from the mobile terminal 100 to the base station 200 is actually performed by the communication protocol processing unit 103 on the mobile terminal 100 side, the wireless transmission unit 102, and the wireless reception on the base station 200 side. Unit 201 and communication protocol processing unit 203 are used. FIG. 4 is a diagram illustrating an example of positioning data and downlink measurement data received and acquired by the mobile terminal measurement data receiving unit 205. For example, as shown in FIG. 4, the mobile terminal measurement data receiving unit 205 obtains identification information (spreading code), position (positioning data), downlink reception level (RSCP), and downlink interference (SIR) of the source mobile terminal. Received and acquired as downlink measurement data and stored in its own data storage area or transmitted to the measurement data association unit 207.

  Next, the measurement data associating unit 207 of the base station 200 refers to the data respectively acquired by the uplink signal measuring unit 204 and the mobile terminal measurement data receiving unit 205, and determines the positioning data, downlink measurement data, and uplink measurement data. Association is performed (S7 in FIG. 2). The measurement data association unit 207 stores only the association information in its own data storage area, or stores the association information and each measurement data together.

  FIG. 5 is a diagram illustrating an example of each measurement data associated with the measurement data association unit 207. FIG. 5A shows an example in which downlink measurement data at the mobile terminal is associated with uplink measurement data at the base station based on the terminal identification information. As shown in FIG. 5A, the identification information (spreading code), position (positioning data), downlink reception level (RSCP), downlink interference amount (SIR), uplink reception level (RSCP), uplink of the mobile terminal as the transmission source The amount of interference (SIR) is associated and held. FIG. 5B shows an example in which mobile terminals in a specific area are selected and the average values of downlink measurement data and uplink measurement data related to these mobile terminals are associated with each other. As shown in FIG. 5B, the region information indicating the range in which the mobile terminal is located, the mobile terminal identification information, the average downlink reception level (RSCP), the average downlink interference amount (SIR), the uplink reception level The average value (RSCP) and the average value (SIR) of the uplink interference amount are held in association with each other. In the present embodiment, the case where the downlink measurement data, the uplink measurement data, and the positioning data are associated with each other based on the terminal identification information has been exemplified. However, the downlink measurement data, the uplink measurement data, and the positioning data can be appropriately associated with each other. If possible, the association method is not limited to this. For example, the downlink measurement data, the uplink measurement data, and the positioning data may be associated with each other based on time information regarding the measurement times of the downlink measurement data, the uplink measurement data, and the positioning data.

  Then, the data management unit 302 of the data management / display device 300 acquires the association information and the measurement data from the measurement data association unit 207 of the base station 200, and stores them in the database 301 (S8 in FIG. 2). Next, statistical processing and analysis of data are performed by the data analysis unit 303 of the data management / display device 300, and the measurement result is displayed by the display unit 304 (S9 in FIG. 2).

  Note that measurement may be started not by the measurement control unit 305 of the data management / display device 300 but by an instruction from the measurement control unit 206 of the base station 200 or an instruction from the measurement start / stop unit 106 of the mobile terminal 100. The processing is performed in substantially the same manner as described above.

FIG. 6 is a diagram illustrating an example of a problem occurrence factor in a service area that can be identified by the processing of the first embodiment. In the mobile communication network, the following factors can cause the communication quality in a specific area within the service area to decrease, such as a decrease in the call completion rate.
(1-1) Radio wave propagation interference due to obstacles (1-2) Increase in the amount of interference from other systems (1-3) Traffic concentration For each of these factors, the radio wave conditions acquired by the first embodiment The state of each measurement data is as shown in FIG. In FIG. 6, “◯” indicates a normal value, and “X” indicates a deviation from the normal value.

  Here, when traffic concentration occurs, the downlink interference amount is a normal value, but the uplink interference amount deviates from the normal value. This traffic concentration factor (1-3) cannot be recognized by measuring only the downlink signal as in the conventional example, but by measuring the uplink signal (uplink interference amount) as in the present embodiment, It becomes possible to grasp the deterioration of communication quality due to concentration.

  Further, when communication quality is reduced by measuring a downlink signal (downlink interference amount) and an uplink signal (uplink interference amount) and comparing a combination of measurement data as in the present embodiment, the communication from other systems It becomes possible to identify the cause (1-2) of the increase in the amount of interference and the factor (1-3) of the traffic concentration. The data analysis unit 303 may analyze the cause of the problem in the service area.

  As described above, according to the first embodiment, not only the downlink signal obtained at the mobile terminal but also the uplink signal obtained at the base station is measured, and the radio wave condition (reception level, interference amount) of the uplink signal is measured. Compared with the case where only the downlink radio wave condition is grasped, a wide range of factors can be grasped and identified. Further, not only the problem occurrence location in the service area but also the cause of the problem can be specified.

(Second Embodiment)
FIG. 7 is a block diagram showing a configuration of a wireless communication area situation measurement system according to the second embodiment of the present invention. FIG. 8 shows a processing procedure and data flow of the wireless communication area situation measurement system according to the second embodiment. FIG.

  The second embodiment is an example in which components are newly added to the configuration of the first embodiment, and the operation is partially changed. Here, detailed description of the same elements as those of the first embodiment described above is omitted.

  In the wireless communication area status measurement system according to the second embodiment, the base station 200 includes a traffic measurement unit 208. The traffic measurement unit 208 counts an index indicating communication traffic based on communication data (protocol data) transmitted / received to / from the mobile terminal 100 in the communication protocol processing unit 203, and outputs a measurement result as traffic measurement data. The traffic measurement unit 208 may be configured to be mounted on the mobile terminal 100.

“Traffic measurement data” measured by the traffic measurement unit 208 is data representing the amount of communication between the base station and the mobile terminal. Examples of “traffic measurement data” include the number of successful RRC connections (rate) / number of failures (rate), downlink MAC PDU throughput / uplink MAC PDU throughput (DL MAC PDU throughput / UL MAC PDU throughput), and the like.

  The measurement control unit 206a issues a measurement start / stop instruction to the traffic measurement unit 208 in addition to the uplink signal measurement unit 204 in the base station 200, and also performs measurement to the measurement start / stop unit 106 of the mobile terminal 100. Give start / stop instructions. The measurement data association unit 207a associates traffic measurement data in addition to the positioning data, downlink measurement data, and uplink measurement data, and generates association information.

  FIG. 9 is a diagram illustrating an example of each measurement data associated in the measurement data association unit 207a. FIG. 9 shows an example in which mobile terminals in a specific area are selected and the average value of downlink measurement data, the average value of uplink measurement data, and traffic measurement data related to these mobile terminals are associated with each other. As shown in FIG. 9, area information indicating a range in which the mobile terminal is located, identification information of the mobile terminal, average downlink reception level (RSCP), average downlink interference (SIR), average uplink reception level ( RSCP), the average value of uplink interference (SIR), the number of RRC connection successes, and the number of RRC connection failures are held in association with each other. Other processes are the same as those in the first embodiment.

FIG. 10 is a diagram illustrating an example of a problem occurrence factor in a service area that can be identified by the processing of the second embodiment. In the mobile communication network, the following factors can cause the communication quality in a specific area within the service area to decrease, such as a decrease in the call completion rate.
(2-1) Radio wave propagation interference due to obstacles (2-2) Increase in the amount of interference from other systems (2-3) Traffic concentration (Number of users increased more than expected)
(2-4) Traffic concentration (although the number of users is within the expected range, the ratio of high traffic users has increased more than expected)
For each of these factors, the measurement data indicating the radio wave status and the traffic status acquired by the second embodiment will be as shown in FIG. In FIG. 10, “◯” indicates a normal value, and “X” indicates a deviation from the normal value.

Here, when traffic concentration occurs due to a large number of users (2-3), the uplink interference amount and the RRC connection success rate are out of normal values. Further, when traffic concentration occurs due to a high high traffic user rate (2-4), the RRC connection success rate becomes a normal value although the uplink interference amount is deviated from the normal value. As described above, the traffic concentration factor (2-3) due to the large number of users and the traffic concentration factor (2-4) due to the increase in the high traffic user rate are the same as in this embodiment. It can be grasped by measuring the rate).

  Further, in the first embodiment, when the communication quality deteriorates by comparing the combination of the downlink measurement data, the uplink measurement data, and the traffic measurement data as in the present embodiment, the type of the factor of traffic concentration is set in the first embodiment. Although it cannot be identified, in the second embodiment, the factor (2-3) due to the increase in the number of users and the factor (2-4) due to the increase in the high traffic user rate can be identified. The data analysis unit 303 may analyze the cause of the problem in the area described above.

  As described above, according to the second embodiment, in addition to the radio wave condition of the uplink signal obtained at the base station, the traffic information obtained at the base station or the mobile terminal is acquired, and these measurement data are used as the location information of the mobile terminal. As a result, it is possible to grasp and identify a wider range of factors than in the case of grasping only the downlink radio wave condition. Further, not only the problem occurrence location in the service area but also more detailed problem occurrence factors can be specified than in the first embodiment.

(Third embodiment)
When an uplink signal is transmitted from the mobile terminal to the base station, the position of the corresponding mobile terminal may not be obtained accurately when measuring the radio wave condition of the uplink signal at this time. For example, when positioning data is transmitted from a mobile terminal to a base station using an uplink signal, if the mobile terminal is moving, the position where the positioning data is obtained in a predetermined cycle and the position where the positioning data is transmitted (uplink signal The transmission position may be different. In addition, when the base station measures an uplink signal, the uplink signal may not include positioning data. In this way, it may happen that accurate position information cannot be acquired due to a difference between the position of the terminal that transmits the uplink signal and the positioning data.

  FIG. 11 is a diagram for explaining the displacement of the positioning point when the terminal is moving. In FIG. 11, the lower mobile terminal A is in a stationary state, the middle mobile terminal B is moving at a low speed, and the upper mobile terminal C is moving at a high speed. Further, it is assumed that all mobile terminals A to C perform positioning in the same cycle.

  Here, in order to know the uplink transmission points (P2, P4, P6) at which the uplink signal from the mobile terminal being measured by the base station is transmitted, (1) using the latest latest positioning data, (2 There are two possible ways to request a new positioning. When the method (1) is used, since P1, P3, and P5 are the latest positioning data, these are adopted. In this case, since the mobile terminal A is stationary, the latest past positioning point P1 and the upstream transmission point P2 become equal, and a correct transmission point can be obtained. However, when the terminal is moving, in the case of mobile terminal B, the uplink transmission point is P4 that has already moved from the latest positioning point P3 in the past, and an error occurs by ΔP34. Further, since the mobile terminal C is moving at a high speed, the error ΔP56 is further increased. When the method (2) is used, since the base station requests the mobile terminal for positioning and the mobile terminal moves until the mobile terminal performs positioning and reports, the same error occurs. . In this case, extra traffic is generated for positioning.

Actually, the terminal moves at various speeds, and the measurement period and the reporting period can be designated in various ways. Since the terminal reports positioning data etc. without being aware of the movement state, the base station receives measurement results from terminals in various movement states and measurement cycles, and there is variation in the positioning accuracy of uplink signals. . In order to reduce the error, a method of shortening the measurement period and the reporting period is also conceivable, but the load on the terminal increases and the amount of data increases. Therefore, when the positioning result at the mobile terminal is the uplink signal transmission position, the positioning accuracy is unclear and the reliability may be low. Therefore, in the third embodiment, a configuration example for improving the positioning accuracy corresponding to the acquired measurement data is shown.

  FIG. 12 is a block diagram showing a configuration of a wireless communication area status measurement system according to the third embodiment of the present invention. The third embodiment is an example in which constituent elements are newly added to the configuration of the second embodiment and the operation is partially changed. Here, detailed description of the same elements as those in the first and second embodiments described above is omitted.

  The base station 200 includes a terminal movement state detection unit 209, an uplink transmission position estimation unit 210, and a clock processing unit 215 in the wireless communication area situation measurement system of the third embodiment. In addition, although the structure provided with both the terminal movement state detection part 209 and the uplink transmission position estimation part 210 is shown here, only one of the terminal movement state detection part 209 and the uplink transmission position estimation part 210 is provided. There may be. The time processing unit 215 has a clock function and outputs time information to the measurement data association unit 207.

  The terminal movement state detection unit 209 analyzes the positioning data based on the positioning data for each mobile terminal, detects the movement state of the mobile terminal, and outputs movement state information. Examples of the moving state of the mobile terminal include an average moving speed, acceleration, and moving direction. The movement state information output by the terminal movement state detection unit 209 includes, for example, the movement speed and movement amount of the mobile terminal. Uplink transmission position estimation section 210 determines the uplink transmission position from which the uplink signal is transmitted from the mobile terminal based on the moving speed of the mobile terminal calculated by terminal movement state detection section 209 and the time information obtained from time processing section 215. To be estimated.

  In this configuration, the terminal movement state detection unit 209 receives a report of measurement data reception from the mobile terminal measurement data reception unit 205, and when the uplink signal measurement unit 204 measures the uplink signal, the movement corresponding to the measurement data is performed. Positioning data for each terminal is received from the mobile terminal measurement data receiving unit 205 and held. When the positioning data becomes two or more points, the moving speed and moving direction between the points are calculated in three dimensions and output to the measurement data associating unit 207b as moving state information. Here, when the positioning data is three-dimensional data of latitude, longitude, and altitude, the speed and direction are calculated and handled in three dimensions. When a large amount of positioning data is obtained, the moving speed between the two points is calculated in a plurality of sections, and the acceleration is estimated from the speed change for each section. Note that the positioning data for each terminal can be obtained not only when the measurement data is received but also by referring to a database later. This database may be provided in the base station.

  The movement state information calculated by the terminal movement state detection unit 209 is associated with the measurement data in the measurement data association unit 207b, output to the data management unit 302b of the data management / display device 300, and stored in the database 301 by the data management unit 302b. Saved. Then, the data analysis unit 303b refers to the movement state information attached to the measurement data, and determines whether to use for the processing. As an example of the determination condition, (c1) use only the data of the mobile terminal that has stopped, (c2) use only the data of the mobile terminal at a speed equal to or less than the specified speed, and (c3) the mobile terminal with a large change in the movement state This data is not used. That is, the data management unit 302b does not use data when the moving speed or moving amount of the mobile terminal is equal to or greater than a predetermined value. Thus, by excluding measurement data having a large moving speed and moving amount and not using it, an uplink signal can be analyzed with data having a certain positioning accuracy in consideration of a positioning error due to movement of the terminal.

Next, uplink transmission position estimation processing by the uplink transmission position estimation unit 210 will be described. The uplink transmission position estimation unit 210 is configured to obtain the uplink signal obtained based on the moving speed of the mobile terminal obtained by the terminal movement state detection unit 209, the positioning time included in the uplink signal, and the time information output from the time processing unit 215. Using the reception time, the uplink transmission position at which the mobile terminal has performed uplink transmission is estimated and output to the measurement data association unit 207b.

  FIG. 13 is a flowchart illustrating a procedure of uplink transmission position estimation processing according to the third embodiment. First, an uplink signal is measured in the uplink signal measurement unit 204 (step S11), and the uplink transmission position estimation unit 210 receives the uplink measurement data of the measurement result and the mobile terminal 100 received by the mobile terminal measurement data reception unit 205. The downlink measurement data, the positioning data, and the terminal identification information from time and the time information of the time Tm output from the time processing unit 215 are stored (step S12).

  Then, uplink transmission position estimation section 210 determines whether or not there are two or more past measurement data and positioning data (step S13). If there are two or more positioning data, speed V1 between the positioning points in step S16. Is calculated. In this case, the positioning data of the latest latest positioning point saved in step S12 is P2, the positioning time is T2, the positioning data of the previous positioning point is P1, the positioning time is T1, and the average between P1 and P2 The speed V1 is obtained.

  On the other hand, when the positioning data is only one point, the mobile terminal measurement data receiving unit 205 waits for reception of the measurement data from the mobile terminal 100 in step S14, and when receiving the measurement data reception report, the measurement data, positioning data P2 and terminal identification information, and time information at time T2 are stored (step S15). In step S16, the speed V1 between the positioning points is calculated. In this case, the positioning data stored at step S12 is P1, the positioning time is T1, and then the average speed V1 between P1 and P2 is obtained using the positioning data P2 and positioning time T2 stored at step S15. become.

  FIG. 14 is a diagram for explaining the calculation processing of the speed between positioning data. As shown in FIG. 14A, when there are two or more past positioning data (in the case of directly proceeding to S16 from step S13 in FIG. 13), from the positions P2-P1 of the two positioning points and the time T2-T1. An average speed V1 between P1 and P2 is obtained. As shown in FIG. 14B, when the past positioning data is only one point (in the case of proceeding from steps S13 to S14, S15 to S16 in FIG. 13), the positioning data P2 of the subsequent positioning points, the positioning time T2 is acquired, and the position P2-P1 of the two positioning points, and the average speed V1 between time T2-T1 and P1-P2 are obtained. In this example, it is shown in two dimensions, but actually, it is calculated in three dimensions as Pn (X, Y, Z), n = 1, 2,. Note that the movement speed of the mobile terminal calculated by the terminal movement state detection unit 209 can also be used to calculate the speed between positioning points.

  Next, the uplink transmission position estimation unit 210 estimates the uplink transmission position Pm (step S17). Here, the uplink transmission position Pm is obtained by Pm = P2 + (Tm−T2) * V1 in the same manner in the case of FIG. 14A and the case of FIG. 14B. Then, the uplink transmission position estimation unit 210 stores the calculated uplink transmission position Pm and the uplink measurement data, and sends them to the measurement data association unit 207b (step S18).

  The measurement data associating unit 207b uses the position estimated by the uplink transmission position estimation unit 210 as the uplink transmission position, associates it with measurement data, and outputs it to the data management unit 302b of the data management / display device 300. In this way, by estimating the uplink transmission position at which the mobile terminal performed uplink transmission from the moving speed of the mobile terminal, that is, the positioning position and positioning time of the terminal and the reception time of the measurement data, positioning based on the movement of the terminal Error can be corrected and positioning accuracy can be improved.

As described above, according to the third embodiment, the measurement data when the moving speed and the moving amount are large is not used, and the measurement data of the upstream signal is analyzed by the data having a certain positioning accuracy, thereby performing the measurement. Data position accuracy can be ensured. Further, by estimating the uplink transmission position from the moving speed of the mobile terminal, it is possible to correct a positioning error due to the movement of the terminal. Accordingly, it is possible to improve the position measurement accuracy in consideration of the positioning error due to the movement of the terminal.

(Fourth embodiment)
When measuring the radio wave condition in the service area in the mobile communication network and the area condition such as traffic information, in the conventional system, excessive data such as duplicate data is acquired, and the amount of measurement data becomes enormous. was there. FIG. 15 is a diagram showing an example of state transition of measurement start / stop in the conventional wireless communication area situation measurement system. Conventionally, as a condition for starting measurement from the collection stop state to the collection state, it is started manually by specifying the measurement area and time zone, or by call processing alert, major alert, resource usage status, call loss alert, weather condition Etc. are used. Further, as a condition for stopping the measurement from the collection state to the collection stop state, a manual stop or a stop by time is used.

  In this case, if measurement is started / stopped regardless of the number or distribution of mobile terminals, the processing load increases due to excessive data acquisition, waste of data storage media (capacity), wireless resources, wired transmission resources, etc. Resources are wasted. In addition, the measurement load may be concentrated on a specific terminal, which may affect the processing capability of the terminal or increase battery consumption.

  FIG. 16 is a diagram illustrating an example in which excessive data is acquired. Here, as shown in FIG. 16, a 1 / 6-circle service area including a station is considered. Collection of area status measurement data is performed by designating a time zone for each section divided by mesh data (national land numerical information) defined as a longitude and latitude grid on the map. Since the population density around the station is high and there are many terminals, if measurement data is collected by specifying only the time zone, the area around the station shown in the figure is collected excessively. It will be. This causes an increase in processing load as described above, waste of resources, and the like. At this time, if the acquired data amount is simply thinned, the information amount of the measurement data is reduced and the quality of the analysis result is deteriorated. Therefore, the fourth embodiment shows a configuration example in which an increase in processing load and waste of resources are eliminated and an appropriate amount of measurement data can be collected.

  FIG. 17 is a block diagram showing a configuration of a wireless communication area status measurement system according to the fourth embodiment of the present invention. The fourth embodiment is an example in which constituent elements are newly added to the configuration of the third embodiment and the operation is partially changed. The wireless communication area status measurement system according to the fourth embodiment collects data for enabling an appropriate amount of measurement data to be collected for at least one of uplink measurement data, downlink measurement data, and traffic measurement data. The main feature is the provision of a management unit. That is, the data collection management unit controls data collection so that, for example, at least one of the uplink measurement data, downlink measurement data, and traffic measurement data has a data amount equal to or less than a predetermined value. In addition, detailed description is abbreviate | omitted about the element similar to the 1st-3rd embodiment mentioned above here.

In the wireless communication area status measurement system according to the fourth embodiment, the base station 200 includes a message monitoring unit 211. The message monitoring unit 211 compares the message data output from the communication protocol processing unit 203 with the messages specified in the measurement start / stop conditions, and if they match, the message monitoring unit 211 matches the measurement control unit 206c. Control the start / stop of the measurement by telling you. As a message used for starting / stopping measurement, a message for connection of wireless communication, a message for data transmission, a message for disconnection of wireless communication, etc. may be used. When data is sent or a handover is performed. Measure radio wave conditions such as time. The message monitoring unit 211 may be provided in any of the base station 200, the mobile terminal 100, and the data management / display device 300. Together with the message monitoring unit 211, the measurement control unit 206c and the measurement control unit 305c realize the function of the data collection management unit.

  Here, as a specific example of the processing operation of the fourth embodiment, a case where measurement data from establishment to completion of a radio channel between a base station and a mobile terminal will be described. FIG. 18 is a diagram illustrating a state transition of measurement start / stop in the fourth embodiment. First, radio bearer setup (RB setup: radio channel establishment setting) is set as a collection start condition and Radio bearer release (RB release: radio channel release) is set as a collection stop condition by the input unit 306 of the data management / display device 300. The measurement control unit 305c is instructed to start measurement. Then, a measurement start instruction including a collection start condition and a collection stop condition is sent from the measurement control unit 305c to the measurement control unit 206c of the base station 200.

  The message monitoring unit 211 shifts to the data collection standby mode (collection standby state) when the measurement control unit 206c is instructed to start data collection in the data collection stop mode (collection stop state). In the data collection standby mode, the message monitoring unit 211 monitors whether the RB setup message is output from the communication protocol processing unit 203. When the message monitoring unit 211 detects the RB setup message from the output of the communication protocol processing unit 203, the message monitoring unit 211 shifts from the data collection standby mode to the data collection mode (collection state), and includes the message number in the detection notification to perform measurement control. Notification to the unit 206c. Further, in the data collection mode, when the message monitoring unit 211 detects an RB release message from the output of the communication protocol processing unit 203, the message monitoring unit 211 shifts from the data collection mode to the data collection stop mode and performs measurement by including the message number in the detection notification. Notify the controller 206c.

  The measurement control unit 206c compares the message number included in the notification from the message monitoring unit 211 with the measurement condition, and starts and stops the measurement. Here, measurement is started when a measurement start message that matches the collection start condition is received, and measurement is stopped when a measurement stop message that matches the collection stop condition is received. In the data collection mode and the data collection standby mode, a time-out occurs after a preset time has elapsed and the previous mode is restored. Thereby, the measurement of the area status can be started when a message for setting up a wireless channel is received, and the measurement can be stopped when a message for opening a wireless channel is received.

  As described above, according to the fourth embodiment, the message exchanged between the base station and the mobile terminal is monitored, and an area at the time of a desired communication signal or operating state is obtained by receiving a preset specific message. The situation can be measured. Thereby, the data regarding specific call control can be efficiently acquired according to the purpose. For example, (d1) In the case of initial connection failure analysis, uplink measurement data and downlink measurement data are measured only during the initial connection procedure. (D2) In the case of traffic analysis, traffic measurement is performed only while user data is transmitted and received. Data can be collected under specific conditions such as measuring data. Therefore, measurement information can be efficiently collected depending on the purpose of measurement, and wasteful data acquisition can be eliminated without degrading the quality of analysis of measurement results. As a result, an increase in the processing load of the system and waste of resources can be suppressed, and an appropriate amount of measurement data can be collected.

(Fifth embodiment)
FIG. 19 is a block diagram showing a configuration of a wireless communication area status measurement system according to the fifth embodiment of the present invention. The fifth embodiment is an example in which the operation is partially changed with respect to the configuration of the fourth embodiment. In addition, detailed description is abbreviate | omitted about the element similar to the 1st-4th embodiment mentioned above here.

The wireless communication area status measurement system of the fifth embodiment is obtained by changing the operations of the data management unit 302d and the measurement control unit 305d in the data management / display device 300. In this embodiment, the measurement area in the mobile communication network is partitioned and managed, and the data in the partition where the number of data reaches the planned number is not subjected to new measurement. Here, as the section data for setting each section, mesh data by the Ministry of Land, Infrastructure, Transport and Tourism may be used. The data management unit 302d and the measurement control unit 305d realize the function of the data collection management unit, and the data management unit 302d and the input unit 306 realize the function of the measurement upper limit setting unit in the data collection management unit.

  A specific example of the processing operation of the fifth embodiment will be described. First, the measurement number upper limit value of the section in the service area is set by the input unit 306 of the data management / display apparatus 300, and is stored in the collection management table of the database 301 through the data management unit 302d. The upper limit value of the number of measurements can be set in a service area or for each section. When receiving a data collection start instruction from the measurement control unit 305d, the data management unit 302d initializes the collection management table of the database 301. When the data management unit 302d receives the association data or the measurement data from the measurement data association unit 207 of the base station 200, the data management unit 302d refers to the positioning data corresponding to the received data, and the target section of the collection management table of the database 301 After the number of collected data is counted up, it is compared with the set maximum number of measurements.

  Here, when the measurement number upper limit value has not been reached, the data management unit 302 d stores association data, measurement data, positioning data, and the like in the database 301. When the number of collected data in the measurement section reaches the measurement number upper limit, the measurement control unit 305d is notified to stop collecting data in the section. When the measurement control unit 305d receives a data collection stop notification from the data management unit 302d, the measurement control unit 305d transmits measurement stop information regarding the corresponding partition to the measurement control unit 206d of the base station 200. When the measurement control unit 206d of the base station 200 receives the measurement stop information, the measurement control unit 206d notifies the communication protocol processing unit 203 of this and also notifies the mobile terminal 100 by the wireless transmission unit 202.

  FIG. 20 is a diagram for explaining data collection management processing for each section in the service area. FIG. 20 shows a state in which a 1 / 6-circle service area is divided into a plurality of sections. The upper section of each section indicates a section number, the lower right section indicates the upper limit value of the number of measurements for each section, and the left section collects. The number of data is shown. The sections indicated by diagonal lines indicate a state in which the number of collected data has reached the upper limit of the number of measurements and measurement stop information has been issued.

  Note that the upper limit of the number of measurements that determines the number of collected data for each section can be set automatically or according to changes in the measured values, depending on the measured values of the acquired measurement data. For example, the data management unit 302d has a function for setting the upper limit of the number of measurements, and the upper limit of the number of measurements is automatically set according to the measurement value of the measurement data. The upper limit value of the measurement number may be changed according to the situation in the service area such as a change in the measurement value, such as increasing the number of collections in an area where the change in the measurement value is large.

  As described above, according to the fifth embodiment, an appropriate amount of data is collected by setting the number of collections of measurement data for each section and stopping the measurement of the section when the upper limit of the number of collection is reached. Can do. For example, excessive data acquisition from an area with high population density can be eliminated. In addition, the number of data required for service area analysis can be automatically acquired. Therefore, measurement information can be efficiently collected depending on the purpose of measurement, and wasteful data acquisition can be eliminated without degrading the quality of analysis of measurement results. As a result, an increase in the processing load of the system and waste of resources can be suppressed, and an appropriate amount of measurement data can be collected.

(Sixth embodiment)
FIG. 21 is a block diagram showing a configuration of a wireless communication area status measurement system according to the sixth embodiment of the present invention. The sixth embodiment is an example in which components are newly added to the configuration of the fourth embodiment and the operation is partially changed. In addition, detailed description is abbreviate | omitted about the element similar to the 1st-4th embodiment mentioned above here.

  The wireless communication area situation measurement system of the sixth embodiment includes a group setting unit 212 in the base station 200 and a group number calculation unit 107 in the mobile terminal 100. In the present embodiment, mobile terminals are grouped and an appropriate amount of measurement data is collected. The group setting unit 212 of the base station 200 outputs group setting information for notifying the grouping method (grouping setting) of the mobile terminals and the designation of the group to be measured, and notifies the mobile terminal 100 of the group setting information. The group number calculation unit 107 of the mobile terminal 100 receives the group setting information, calculates the group number of the own terminal, and determines whether the group is a measurement target group.

  The measurement control unit 206e of the base station 200 transmits a measurement start / stop instruction for each group to the mobile terminal 100. When the measurement start / stop unit 106e of the mobile terminal 100 is the measurement target group based on the measurement start / stop instruction for each group from the measurement control unit 206e and the group determination result in the group number calculation unit 107 Causes the measurement process to be executed. In addition, the measurement control unit 206e of the base station 200 controls measurement data reception and uplink signal measurement processing for the mobile terminals in the measurement target group. The group setting unit 212, the group number calculation unit 107, the measurement control unit 206e, and the measurement start / stop unit 106e realize the function of the data collection management unit, and the data collection management unit is configured by the group setting unit 212 and the group number calculation unit 107. This implements the function of the group setting unit.

  The group setting unit 212 may be provided in either the base station 200 or the data management / display device 300. The function for determining the measurement target group is that the grouping setting, selection of the measurement target group, and determination of the mobile terminal to be measured are all performed in the base station 200 or the data management / display device 300, and only the mobile terminal to be measured You may make it send a measurement start instruction to. In addition, the mobile terminal 100 may set the grouping by itself without notifying the grouping method from the base station 200 or the like, or the mobile terminal 100 may independently generate a random number to set or change the group. It is also possible to do this. Further, the mobile terminal of the measurement target group may be determined by the terminal itself, and the fact may be notified to the base station 200.

Next, a specific example of the processing operation of the sixth embodiment will be shown. FIG. 22 is a diagram for explaining processing related to setting of grouping of mobile terminals and determination of measurement target groups. In this example, a terminal-specific number such as IMSI (International Mobile Subscriber Identity) is used as the terminal number of each mobile terminal, and the group number is a remainder obtained by dividing the terminal number by 3 (terminal number mod 3).
An example of determination is shown below.

  The base station 200 sets the number of groups (3 in this example) for each mobile terminal 100 in the service area by using the group setting unit 212, and sends the group setting information including the number of groups to the communication protocol processing unit 203 and the wireless Informs the mobile terminal 100 via the transmission unit 202. The mobile terminal 100 receives the group setting information, and the group number calculation unit 107 calculates its own group number from its own terminal number and the number of received groups. At this time, as shown in FIG. 22 (a), for example, each mobile terminal with terminal numbers 1 to 10 calculates and determines its own group numbers 0, 1, and 2, respectively.

Then, the base station 200 transmits the measurement group number and measurement conditions (measurement period, measurement time, etc.) to the mobile terminal 100 in the measurement start message. When receiving the measurement start message, the mobile terminal 100 confirms the measurement group number and, when the mobile terminal 100 matches the group number of the own terminal, starts the measurement according to the measurement condition and performs the measurement until the measurement end condition is satisfied. Base station 20
0 means that the measurement group number is changed and the other mobile terminals in the service area execute the measurement when the current measurement group ends the measurement or at regular time intervals. At this time, as shown in FIG. 22B, measurement group numbers 0, 1, and 2 are sequentially changed, and measurement data is collected while switching the group of terminals that perform measurement.

  Each mobile terminal in the service area may vary in reception status or receive performance may vary from terminal to terminal, but it is possible to measure terminals randomly by performing measurement while switching measurement groups as described above. It can be performed. Thereby, diversity can be given to measurement data and the analysis result of statistically favorable measurement data can be obtained.

  As described above, according to the sixth embodiment, by performing grouping of mobile terminals to be measured, it is possible to control the measurement amount per terminal when data is randomly acquired over the entire service area. In addition, it is possible to prevent concentration of measurement processing on a specific terminal, and it is possible to collect the necessary number of data while suppressing the amount of measurement processing per terminal. Therefore, an increase in the processing load of the system and waste of resources can be suppressed, and an appropriate amount of measurement data can be collected.

(Seventh embodiment)
FIG. 23 is a block diagram showing a configuration of a wireless communication area status measurement system according to the seventh embodiment of the present invention. The seventh embodiment is an example in which components are newly added to the configuration of the fourth embodiment and the operation is partially changed. In addition, detailed description is abbreviate | omitted about the element similar to the 1st-4th embodiment mentioned above here.

  The mobile communication area status measurement system according to the seventh embodiment includes a battery monitoring unit 108 in the mobile terminal 100. If data collection is performed without considering the status and processing of the mobile terminal, the battery of the terminal will be wasted and the terminal processing capacity will be reduced. There is a problem that it cannot be determined whether the cause of deterioration or interruption is a battery exhaustion or radio wave failure. Therefore, in the seventh embodiment, a configuration is shown in which a battery monitoring unit 108 is provided in each mobile terminal and measurement start / stop is controlled in accordance with the state of the battery. Together with the battery monitoring unit 108, the measurement start / stop unit 106f and the measurement control unit 206f realize the function of the data collection management unit.

  The battery monitoring unit 108 monitors the remaining battery level in each terminal, and notifies the measurement start / stop unit 106f when the remaining battery level is low. When the measurement start / stop unit 106f receives the notification that the remaining battery level is low, the measurement start / stop unit 106f does not start the measurement if it is not currently measured, and interrupts the measurement if the measurement is in progress. Further, the measurement start / stop unit 106f reports the interruption of measurement due to a battery factor to the base station 200. The measurement control unit 206f of the base station 200 receives the measurement interruption report from the mobile terminal 100 and grasps the measurement execution status of each mobile terminal.

  As described above, according to the seventh embodiment, by controlling the start / stop of the measurement according to the state of the battery of each mobile terminal, the battery running out due to the measurement of the area situation is eliminated, and the original communication service is hindered. Can be deterred. In addition, it is possible to eliminate the cause of connection failure due to battery exhaustion, and it is easy to determine the factor based on the radio wave condition or traffic condition.

  It should be noted that the present invention is not limited to those shown in the above-described embodiments, and those skilled in the art can also make changes and applications based on the description in the specification and well-known techniques. Yes, included in the scope of protection.

The present invention is capable of grasping various problems in a service area of a mobile communication network, and has the effect of not only specifying a problem occurrence location but also specifying a problem occurrence factor. It is useful as a radio communication area status measurement system, a radio communication area status measurement method, a base station, and the like that measure the radio wave status in the service area and the area status such as traffic information.

The block diagram which shows the structure of the radio | wireless communication area condition measurement system which concerns on the 1st Embodiment of this invention. The figure which shows the process sequence of the wireless communication area condition measurement system which concerns on 1st Embodiment, and the flow of data. The figure which shows the example of the uplink measurement data measured and acquired in an uplink signal measurement part The figure which shows the example of the positioning data and downlink measurement data which it receives and acquires in a mobile terminal measurement data receiving part The figure which shows the example of each measurement data linked | related in the measurement data correlation part The figure which shows the example of the cause of a problem in the service area identifiable by the process of 1st Embodiment The block diagram which shows the structure of the radio | wireless communication area condition measurement system which concerns on the 2nd Embodiment of this invention. The figure which shows the process sequence and data flow of the radio | wireless communication area condition measurement system which concern on 2nd Embodiment. The figure which shows the example of each measurement data linked | related in the measurement data correlation part The figure which shows the example of the problem cause in the service area which can be identified by the process of 2nd Embodiment The figure explaining the gap of the positioning point when the terminal is moving The block diagram which shows the structure of the radio | wireless communication area condition measurement system which concerns on the 3rd Embodiment of this invention. The flowchart which shows the procedure of the estimation process of the uplink transmission position in 3rd Embodiment. The figure explaining the calculation processing of the speed between positioning data The figure which shows the example of the state transition of the measurement start / stop in the conventional radio | wireless communication area condition measurement system The figure explaining the example where excess data is acquired The block diagram which shows the structure of the radio | wireless communication area condition measurement system which concerns on the 4th Embodiment of this invention. The figure which shows the state transition of the measurement start / stop in 4th Embodiment The block diagram which shows the structure of the radio | wireless communication area condition measurement system which concerns on the 5th Embodiment of this invention. The figure explaining the data collection management processing for every division in a service area The block diagram which shows the structure of the wireless communication area condition measurement system which concerns on the 6th Embodiment of this invention. The figure explaining the process regarding the setting of the grouping of a mobile terminal, and determination of a measuring object group The block diagram which shows the structure of the wireless communication area condition measurement system which concerns on the 7th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Mobile terminal 101 Wireless reception part 102 Wireless transmission part 103 Communication protocol processing part 104 Downstream signal measurement part 105 Positioning process part 106, 106e, 106f Measurement start / stop part 107 Group number calculation part 108 Battery monitoring part 200 Base station 201 Wireless reception Unit 202 wireless transmission unit 203 communication protocol processing unit 204 uplink signal measurement unit 205 mobile terminal measurement data reception unit 206, 206a, 206c, 206d, 206e, 206f measurement control unit 207, 207a, 207b measurement data association unit 208 traffic measurement unit 209 Terminal movement state detection unit 210 Uplink transmission position estimation unit 211 Message monitoring unit 212 Group setting unit 215 Time processing unit 300 Data management / display device 301 Database 302, 302b, 302d Data tube Part 303,303b data analysis unit 304 display unit 305,305c, 305d the measurement control unit 306 input unit

Claims (11)

A downlink signal measurement unit that measures downlink measurement data related to the radio wave condition of the downlink signal from the base station to the mobile terminal in the service area of the mobile communication network;
An uplink signal measurement unit that measures uplink measurement data related to radio wave conditions of an uplink signal from the mobile terminal to the base station;
A positioning processing unit for measuring positioning data related to the position of the mobile terminal;
A measurement data association unit for associating the uplink measurement data, the downlink measurement data, and the positioning data;
A wireless communication area status measurement system. The wireless communication area status measurement system according to claim 1,
A traffic measurement unit that measures traffic measurement data related to a traffic situation in at least one of the uplink signal and the downlink signal;
The measurement data association unit is a wireless communication area state measurement system that associates the traffic measurement data together. The wireless communication area status measurement system according to claim 1,
A terminal movement state detection unit that detects a movement speed or movement amount of the mobile terminal based on the positioning data;
A wireless communication area situation measurement system comprising: a data management unit that does not use data when the moving speed or the moving amount of the mobile terminal is greater than or equal to a predetermined value. The wireless communication area status measurement system according to claim 1,
A terminal movement state detection unit that detects a movement state of the mobile terminal based on the positioning data;
A radio communication area situation measurement system comprising: an uplink transmission position estimation unit that estimates a transmission position of the uplink signal based on the detected moving state and time information when the measurement data of the uplink signal is acquired. The wireless communication area status measurement system according to claim 2,
A wireless communication area situation measurement system comprising a data collection management unit that controls data collection so that at least one of the uplink measurement data, the downlink measurement data, and the traffic measurement data has a data amount equal to or less than a predetermined value. . The wireless communication area status measurement system according to claim 1,
The mobile terminal comprises the downlink signal measurement unit and the positioning processing unit;
Radio communication area situation in which the base station includes the uplink signal measurement unit and the measurement data association unit, and a mobile terminal measurement data reception unit that receives the downlink measurement data and the positioning data measured in the mobile terminal Measuring system.   The wireless communication area state measurement system according to any one of claims 1 to 6, further comprising a data analysis unit that analyzes the uplink measurement data, the downlink measurement data, and the positioning data associated by the association unit. A base station used in a wireless communication area status measurement system for measuring a status in a service area in a mobile communication network,
An uplink signal measurement unit for measuring uplink measurement data related to radio wave conditions of uplink signals from mobile terminals in the service area of the mobile communication network;
A mobile terminal measurement data receiving unit that receives downlink measurement data related to a radio wave condition of a downlink signal from the base station to the mobile terminal measured at the mobile terminal, and positioning data related to the position of the mobile terminal; ,
A measurement data association unit for associating the uplink measurement data, the downlink measurement data, and the positioning data;
A base station comprising: The base station according to claim 8, wherein
A traffic measurement unit for measuring traffic measurement data related to traffic conditions in the uplink signal;
The measurement data association unit is a base station that associates the traffic measurement data together. An uplink signal measurement step for measuring uplink measurement data related to the radio wave condition of the uplink signal from the mobile terminal to the base station in the service area of the mobile communication network;
A downlink signal measurement step for measuring downlink measurement data related to a radio wave condition of a downlink signal from the base station to the mobile terminal;
Positioning step of measuring positioning data related to the position of the mobile terminal;
A measurement data association step for associating the uplink measurement data, the downlink measurement data, and the positioning data;
A wireless communication area status measuring method.   The wireless communication area state measurement method according to claim 10, further comprising a data analysis step of analyzing the uplink measurement data, the downlink measurement data, and the positioning data associated in the measurement data association step.

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