JPH05336564A - Dead place map preparing system of mobile body communication system - Google Patents
Dead place map preparing system of mobile body communication systemInfo
- Publication number
- JPH05336564A JPH05336564A JP4137331A JP13733192A JPH05336564A JP H05336564 A JPH05336564 A JP H05336564A JP 4137331 A JP4137331 A JP 4137331A JP 13733192 A JP13733192 A JP 13733192A JP H05336564 A JPH05336564 A JP H05336564A
- Authority
- JP
- Japan
- Prior art keywords
- position information
- call
- station
- abnormal
- base station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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- Mobile Radio Communication Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は移動体通信システムにお
いて異常終話による通信断が発生し易い不感地域の情報
を収集して表示する不感地マップ作成方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for creating a dead zone map for collecting and displaying information of a dead area in which a communication disconnection due to abnormal termination is likely to occur in a mobile communication system.
【０００２】[0002]
【従来の技術】移動局、基地局、交換局、監視局にて構
成される移動体無線システムにおいて、移動局と基地局
との間で電界強度の劣化、干渉、ビット誤り率の増加等
が起こると、正常な通話を維持できずスケルチ終話等の
異常終話が発生して通信断になる。この現象が頻繁に発
生する地域があると、移動体通信システムのサービス上
大変問題になる。2. Description of the Related Art In a mobile radio system including a mobile station, a base station, a switching station, and a monitor station, deterioration of electric field strength, interference, increase of bit error rate, etc. between the mobile station and the base station are caused. If this happens, a normal call cannot be maintained, and an abnormal end call such as a squelch end call occurs and communication is cut off. If there is an area where this phenomenon occurs frequently, it becomes a serious problem in the service of the mobile communication system.
【０００３】そこで、この現象の発生を防止しサービス
の向上を図るために、異常終話の多発地域を検出し、不
感地マップ情報を作成し、該不感地マップ情報に基づい
てゾーン構成の変更、無線基地局の増設等を行うことが
必要である。Therefore, in order to prevent the occurrence of this phenomenon and improve the service, a region where frequent abnormal endings occur is detected, dead zone map information is created, and the zone structure is changed based on the dead zone map information. It is necessary to add radio base stations.
【０００４】従来は、電界強度測定車を用いて電波伝搬
状況を調査した結果を利用している。Conventionally, the result of investigating the state of radio wave propagation using an electric field strength measuring vehicle has been used.
【０００５】[0005]
【発明が解決しようとする課題】電界強度測定車を利用
した従来の方法では、以下の問題がある。 まず電界強度を調査するために電界強度測定車とい
う特殊かつ大掛かりな装置が必要である。 対象地域全体をカバーする多数の地点における電界
強度の測定を行う必要があるため、時間がかかる。 電界強度の調査用に特定の通話チャネルを専有する
ので、測定期間中は他の一般呼用の通話チャネル数が減
り、トラフィックに対して悪影響を及ぼす。The conventional method using the electric field strength measuring vehicle has the following problems. First, in order to investigate the electric field strength, a special and large-scale device called an electric field strength measurement vehicle is required. It takes time because it is necessary to measure the electric field strength at many points covering the entire target area. Since a specific communication channel is exclusively used for the investigation of electric field strength, the number of communication channels for other general calls is reduced during the measurement period, which adversely affects traffic.
【０００６】本発明は上記問題点に鑑みて創出されたも
ので、大掛かりな装置を必要とせず簡易な装置で詳細な
不感地情報マップを作成できるようにして、システムの
運用コストを削減することを目的とする。The present invention has been made in view of the above problems, and it is possible to reduce the operating cost of the system by making it possible to create a detailed dead-zone information map with a simple device without requiring a large-scale device. With the goal.
【０００７】[0007]
【課題を解決するための手段】図１は本発明の移動体通
信システムにおける不感地マップ作成方式の原理構成図
である。FIG. 1 is a block diagram showing the principle of a dead zone map creating method in a mobile communication system according to the present invention.
【０００８】上記問題点は、図１に示すように、移動局
１と基地局２監視局３とを有する移動体通信システムに
おいて、移動局１には、自局がどの位置にあるかを示す
位置情報を常時出力している位置情報獲得手段11と、異
常終話発生による通信断時の自局の位置情報を記憶する
位置情報記憶手段12と、次回の発呼アクセス時の通話回
線確立後、通話回線中の制御チャネルを用いて、該位置
情報記憶手段12に記憶している異常終話発生時の位置情
報を基地局２に送出する位置情報送出手段13とを設け、
基地局２には、異常終話時の移動局の位置情報を受信
し、該異常終話が発生した位置情報を監視局に通知する
位置情報通知手段21を設け、監視局３には、基地局から
の異常終話時の位置情報を受信して蓄積しておく位置情
報蓄積手段31a と、該蓄積した異常終話位置情報を編集
統計処理して不感地マップ作成する不感地マップ作成手
段32a とを設けたことを特徴とする本発明の移動体通信
システムにおける不感地マップ作成方法により解決され
る。The above-mentioned problem is, as shown in FIG. 1, in a mobile communication system having a mobile station 1 and a base station 2 and a monitoring station 3, the mobile station 1 shows at which position it is located. Position information acquisition means 11 that constantly outputs position information, position information storage means 12 that stores the position information of its own station at the time of communication disconnection due to abnormal call termination, and after establishment of the call line at the time of next call access Position information sending means 13 for sending to the base station 2 the position information stored in the position information storage means 12 at the time of the abnormal end of call, using the control channel in the telephone line,
The base station 2 is provided with position information notifying means 21 for receiving the position information of the mobile station at the time of abnormal end of call and notifying the position information of the occurrence of the abnormal end of call to the monitoring station. Positional information storage means 31a for receiving and accumulating position information at the time of abnormal call termination from the station, and dead zone map creation means 32a for creating a dead zone map by editing and statistically processing the accumulated abnormal call termination position information. This is solved by the method for creating a dead zone map in a mobile communication system according to the present invention, characterized in that
【０００９】[0009]
【作用】一般呼に異常終話が発生する度に、異常終話位
置情報が蓄積していくので、異常終話が頻発する位置の
情報は自動的に監視局に蓄積される。これを行うには、
移動局に位置情報獲得手段が必要になるが、近時の自動
車ナビゲーションシステム等では自移動体の位置を常時
観測して保持しているので、この位置情報を利用する。
運用中の移動局自体が異常終話発生地域を通報するの
で、電界強度測定車を用いることなく異常終話発生地域
に関する情報が広範に得られる。Operation: Every time an abnormal call ends in a general call, the abnormal call end position information is accumulated. Therefore, the information of the position where the abnormal call end frequently occurs is automatically accumulated in the monitoring station. To do this,
Position information acquisition means is required for the mobile station, but this position information is used because recent car navigation systems and the like constantly observe and hold the position of the mobile unit itself.
Since the operating mobile station itself reports the abnormal end call occurrence area, a wide range of information on the abnormal end call occurrence area can be obtained without using a field strength measurement vehicle.
【００１０】この方式を用いることにより、大掛かりな
装置を必要とせず簡易な装置で不感地情報マップを作成
することが可能となり、システムの運用コストを削減す
ることができる。By using this method, it is possible to create a dead-zone information map with a simple device without requiring a large-scale device, and it is possible to reduce the operating cost of the system.
【００１１】また異常終話位置情報は制御チャネルを介
して送信されるので一般呼に対する影響もなくトラフィ
ック上も問題が発生しない。Further, since the abnormal call end position information is transmitted through the control channel, there is no influence on general calls and no traffic problem occurs.
【００１２】[0012]
【実施例】以下添付図により実施例を詳細に説明する。
図２は本発明方式の移動局のブロック図、図３は本方式
の監視局のブロック図、図４は本発明方式の動作を示す
図、図５は不感地マップの出力例の図である。Embodiments Embodiments will be described in detail below with reference to the accompanying drawings.
2 is a block diagram of a mobile station of the present invention system, FIG. 3 is a block diagram of a monitoring station of the present system, FIG. 4 is a diagram showing the operation of the present invention system, and FIG. 5 is a diagram of an output example of a dead zone map. .
【００１３】図２は移動局の構成を示すもので、11は位
置情報獲得部、12a は位置情報入力部、12b は位置情報
メモリ、13a は通信制御部、13b は送受信部である。な
お、図１における位置情報記憶手段12は、位置情報入力
部12a と位置情報メモリ12bとに、位置情報送出手段13
は、通信制御部13a 、送受信部13b とにそれぞれ対応す
る。FIG. 2 shows the configuration of the mobile station. 11 is a position information acquisition unit, 12a is a position information input unit, 12b is a position information memory, 13a is a communication control unit, and 13b is a transmission / reception unit. The position information storage means 12 in FIG. 1 includes a position information input means 12a and a position information memory 12b, and a position information sending means 13
Correspond to the communication control unit 13a and the transmission / reception unit 13b, respectively.
【００１４】次に図４を共に用いて移動局の動作を説明
する。位置情報獲得部11は、移動している自局の現在位
置を常時、把握しており位置情報を出力するものであ
る。図の位置情報獲得部11は、ＧＰＳ（Global Positio
nning System）方式の位置検出装置を用いた例を示すも
ので、航法信号を送出する衛星からの信号を受信して緯
度、経度を算出するＧＰＳ受信部11a と、地図情報を記
録したＣＤ−ＲＯＭ11b と、緯度、経度と地図情報と組
み合わせて現在位置を求めるマップマッチング部11c と
を備えた自動車のナビゲーションシステム用のもの利用
する。この他に車載方位センサから方位と進行距離の変
化量を求め、出発地点の位置に微量走行軌跡を累積加算
することにより現在位置を求めるようにしてある位置検
出装置も使用できる。Next, the operation of the mobile station will be described with reference to FIG. The position information acquisition unit 11 always grasps the current position of the moving local station and outputs the position information. The position information acquisition unit 11 in the figure is a GPS (Global Positio
(nning System) position detecting device is shown, which is a GPS receiving unit 11a that receives a signal from a satellite that sends a navigation signal to calculate latitude and longitude, and a CD-ROM 11b that records map information. And a map matching unit 11c that obtains the current position by combining the latitude and longitude and the map information. In addition to this, a position detecting device that obtains the change amount of the azimuth and the traveling distance from the in-vehicle azimuth sensor and cumulatively adds the trace travel loci to the position of the departure point to obtain the current position can also be used.
【００１５】送受信部13b は従来技術の移動局が備えて
いるものと同様に、送受器からの音声信号やダイヤル信
号を無線チャネルに乗せて基地局との通信を行うもので
ある。The transmission / reception unit 13b carries out communication with the base station by mounting voice signals and dial signals from the handset on the wireless channel, as in the case of the mobile station of the prior art.
【００１６】通信制御部13a は、通常通話時の通信制御
を行う他に、異常終話が発生したことを検出すると位置
情報獲得部11からその時の位置情報を位置情報入力部12
a を介して入力し、異常終話が発生した地点を示す位置
情報を位置情報メモリ12b に記憶させるように制御す
る。The communication control unit 13a controls the communication at the time of a normal call, and when detecting the occurrence of an abnormal end of call, the position information acquisition unit 11 outputs the position information at that time to the position information input unit 12
It is input via a and the position information memory 12b is controlled to store the position information indicating the point where the abnormal end of the call has occurred.
【００１７】そして、その後の発呼時に基地局との通信
回線が正常に確立すると、位置情報メモリ12b に記憶し
ている直前回の異常通話発生時の位置情報を、制御チャ
ネルを通じてアクセスした基地局に送信する。When the communication line with the base station is normally established during the subsequent call, the base station that has accessed the position information stored in the position information memory 12b at the time of the abnormal call of the immediately preceding time through the control channel. Send to.
【００１８】そして、制御部13a は、送受信部13b が基
地局からのデータ受信確認信号を受信するとそれを検出
して、位置情報メモリ12b をクリアするように制御す
る。次に、図示せぬの基地局は、移動局との回線確立後
に制御チャネルを介して、移動局の位置情報メモリに記
憶されていた異常終話の発生事実とその時の位置情報と
を受信すると、監視局に対してその内容を通知するとと
ももに、発呼移動局に対してデータ受信確認信号を送出
し、位置情報メモリをクリアさせる。Then, the control unit 13a detects the data reception confirmation signal from the base station when the transmission / reception unit 13b receives it, and controls the position information memory 12b to be cleared. Next, when a base station (not shown) receives the fact of occurrence of abnormal termination stored in the position information memory of the mobile station and the position information at that time via the control channel after establishing a line with the mobile station. While notifying the monitoring station of its contents, a data reception confirmation signal is sent to the calling mobile station to clear the position information memory.
【００１９】図３の監視局には、システムに関する所定
の情報を保持するデータ保持部31の中に位置情報蓄積部
31a と地図情報記録部31b と、編集統計して作成した不
感地マップを一時記憶する編集結果記憶部31c を、また
監視局の本来機能として従来から有する編集統計処理部
32に不感地マップ作成処理部32a を新たに設ける。In the monitoring station shown in FIG. 3, a position information storage unit is included in a data holding unit 31 that holds predetermined information about the system.
31a, a map information recording unit 31b, an edit result storage unit 31c for temporarily storing a dead-area map created by editing statistics, and an edit statistics processing unit that has been conventionally provided as an original function of a monitoring station.
A dead area map creation processing unit 32a is newly provided in 32.
【００２０】編集統計処理部32は各基地局経由で送信さ
れてくる異常終話発生地点に関する位置情報に受信時刻
情報を付加して位置情報蓄積部31a に蓄積する。そし
て、編集統計処理部32は所定の保守管理コマンドに基づ
き、不感地マップ作成処理部32a を起動して、位置情報
蓄積部31a に蓄積されている位置情報を読出し、所定の
微小エリアサイズ毎に異常終話が一定期間内に何回発生
したかを統計処理し、地図情報保持部31b からの地図情
報と組み合わせて所定に編集して不感地マップを作成し
て、編集統計結果記憶部31c に一時的に記憶した後、監
視卓の表示部やプリンタ等からなる出力装置33に出力す
る。The edit statistic processing unit 32 adds the reception time information to the position information regarding the abnormal call termination point transmitted via each base station and stores it in the position information storage unit 31a. Then, based on a predetermined maintenance management command, the edit statistic processing unit 32 activates the dead zone map creation processing unit 32a to read the position information stored in the position information storage unit 31a, and for each predetermined small area size. Statistical processing is performed on how many times abnormal call ends occur within a certain period of time, and in combination with the map information from the map information storage unit 31b, predetermined editing is performed to create a dead zone map, which is stored in the edited statistical result storage unit 31c. After being temporarily stored, it is output to the output device 33 including a display unit of a monitor and a printer.
【００２１】図５は不感地マップの出力例の図で、図
（Ａ）の如きゾーン構成でａ〜ｄの地域に不感地域が存
在する場合には、図（Ｂ）に示すように一定期間内の異
常終話の発生頻度に対応した色で各不感地域を地図上に
表した不感地マップを作成して表示する。FIG. 5 is a diagram showing an output example of a dead zone map. In the case where dead zones exist in the areas a to d in the zone structure as shown in FIG. 5A, as shown in FIG. Create and display a dead area map in which each dead area is represented on a map in a color corresponding to the frequency of occurrence of abnormal end calls.
【００２２】システム管理者はこの不感地マップを参照
し、他の条件を考慮しながら基地局の増設等のシステム
改善策を決定する。The system administrator refers to this dead zone map and determines a system improvement measure such as the addition of a base station while taking other conditions into consideration.
【００２３】[0023]
【発明の効果】以上説明した如く本発明によれば、移動
局に位置情報獲得部と位置情報メモリとの機能を付加
し、一般通話で異常終話が発生する都度、その位置情報
を一時記憶し、次回正常通話時に制御チャネルを通じて
監視局に送信するようにしたので、異常終話を起こす不
感地の位置情報が監視局に自動的に蓄積されるので、段
階強度測定車による調査を必要とせず、また調査時に通
話チャネルを専有することがなく、簡単に精密な不感地
情報マップが得られるという効果がある。As described above, according to the present invention, the functions of the position information acquisition unit and the position information memory are added to the mobile station, and the position information is temporarily stored each time an abnormal call end occurs in a general call. However, the next time a normal call is made, the information is sent to the monitoring station via the control channel, so the location information of the dead area that causes abnormal end of the call is automatically stored in the monitoring station. In addition, there is an effect that a precise dead zone information map can be easily obtained without occupying a communication channel at the time of investigation.
【図１】本発明の移動体通信システムにおける不感地マ
ップ作成方式の原理構成図FIG. 1 is a principle configuration diagram of a dead-area map creating method in a mobile communication system of the present invention.
【図２】本発明方式の移動局のブロック図FIG. 2 is a block diagram of a mobile station according to the present invention.
【図３】本発明方式の監視局のブロック図FIG. 3 is a block diagram of a monitoring station according to the present invention.
【図４】本発明方式の動作を示す図FIG. 4 is a diagram showing the operation of the method of the present invention.
【図５】不感地マップの出力例の図FIG. 5 is a diagram of an output example of a dead area map.
１…移動局、11…位置情報獲得手段( 位置情報獲得手段
部) 、12…位置情報記憶手段、12b …位置情報メモリ、
13…位置情報通信手段、13a …通信制御部、13b…送受
信部、２…基地局、21…位置情報通知手段、３…監視
局、31…位置情報蓄積手段、31…データ保持部、31a …
位置情報蓄積部、32…編集統計処理部、32a…不感地マ
ップ作成手段（不感地マップ作成処理部）DESCRIPTION OF SYMBOLS 1 ... Mobile station, 11 ... Position information acquisition means (position information acquisition means part), 12 ... Position information storage means, 12b ... Position information memory,
13 ... Position information communication means, 13a ... Communication control section, 13b ... Transmission / reception section, 2 ... Base station, 21 ... Position information notification means, 3 ... Monitoring station, 31 ... Position information storage means, 31 ... Data holding section, 31a.
Position information storage unit, 32 ... Editing statistic processing unit, 32a ... Dead area map creation means (dead area map creation processing unit)
Claims (1)
を有する移動体通信システムにおいて、 移動局(1) には、 自局がどの位置にあるかを示す位置情報を常時出力して
いる位置情報獲得手段(11)と、 異常終話発生による通信断時の自局の位置情報を記憶す
る位置情報記憶手段(12)と、 次回の発呼アクセス時の通話回線確立後、通話回線中の
制御チャネルを用いて、前記位置情報記憶手段(12)に記
憶している異常終話発生時の位置情報を基地局(2) に送
出する位置情報送出手段(13)とを設け、 基地局(2) には、 異常終話時の移動局の位置情報を受信し、該異常終話が
発生した位置情報を監視局(3) に通知する位置情報通知
手段(31)を設け、 監視局(3) には、基地局からの異常終話時の位置情報を
受信して蓄積しておく位置情報蓄積手段(31a) と、該蓄
積した異常終話位置情報を編集統計処理して不感地マッ
プ作成する不感地マップ作成手段(32a) とを設けたこと
を特徴とする移動体通信システムにおける不感地マップ
作成方式。1. In a mobile communication system having a mobile station (1), a base station (2) and a monitoring station (3), the mobile station (1) has a position indicating which position it is. Location information acquisition means (11) that constantly outputs information, location information storage means (12) that stores the location information of its own station when communication is interrupted due to abnormal call termination, and call at the time of next call access After the line is established, the position information sending means (13) for sending the position information at the time of the abnormal end of call stored in the position information storage means (12) to the base station (2) by using the control channel in the call line ) Is provided, and the base station (2) receives position information of the mobile station at the time of abnormal end of call and notifies the monitoring station (3) of the position information at which the abnormal end of call occurs. 31) is provided, and the monitoring station (3) has a position information storage means (31a) for receiving and storing the position information at the time of abnormal termination from the base station, and the accumulated difference information. Dead spots map creation method in a mobile communication system, characterized in that the End position information editing statistic processing to providing the dead spots map creation means for creating dead spots map (32a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4137331A JPH05336564A (en) | 1992-05-29 | 1992-05-29 | Dead place map preparing system of mobile body communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4137331A JPH05336564A (en) | 1992-05-29 | 1992-05-29 | Dead place map preparing system of mobile body communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05336564A true JPH05336564A (en) | 1993-12-17 |
Family
ID=15196167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4137331A Withdrawn JPH05336564A (en) | 1992-05-29 | 1992-05-29 | Dead place map preparing system of mobile body communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05336564A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002152103A (en) * | 2000-10-02 | 2002-05-24 | Scoreboard Inc | Method for evaluating service quality in cdma mobile telephone system |
| JP2006516869A (en) * | 2003-01-30 | 2006-07-06 | クゥアルコム・インコーポレイテッド | Event-triggered data collection |
| WO2009057544A1 (en) * | 2007-10-31 | 2009-05-07 | Mitsubishi Electric Corporation | Mobile communication system, base station, mobile station, and base station installation method |
| JPWO2007119314A1 (en) * | 2006-03-15 | 2009-08-27 | 日本電気株式会社 | COMMUNICATION AREA DETECTION SYSTEM AND METHOD, BASE STATION AND MOBILE DEVICE USED FOR THE SAME |
| JP2010268209A (en) * | 2009-05-14 | 2010-11-25 | Nec Corp | Communication equipment, information providing method and program |
| JP2011119976A (en) * | 2009-12-03 | 2011-06-16 | Fujitsu Ltd | Base station, wireless controller, core network device and area map creation device |
-
1992
- 1992-05-29 JP JP4137331A patent/JPH05336564A/en not_active Withdrawn
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002152103A (en) * | 2000-10-02 | 2002-05-24 | Scoreboard Inc | Method for evaluating service quality in cdma mobile telephone system |
| JP4541522B2 (en) * | 2000-10-02 | 2010-09-08 | アレン テレコム， リミテッド ライアビリティ カンパニー | Method for evaluating quality of service in CDMA mobile telephone systems |
| JP2006516869A (en) * | 2003-01-30 | 2006-07-06 | クゥアルコム・インコーポレイテッド | Event-triggered data collection |
| JP2011061805A (en) * | 2003-01-30 | 2011-03-24 | Qualcomm Inc | Event-triggered data collection |
| JPWO2007119314A1 (en) * | 2006-03-15 | 2009-08-27 | 日本電気株式会社 | COMMUNICATION AREA DETECTION SYSTEM AND METHOD, BASE STATION AND MOBILE DEVICE USED FOR THE SAME |
| WO2009057544A1 (en) * | 2007-10-31 | 2009-05-07 | Mitsubishi Electric Corporation | Mobile communication system, base station, mobile station, and base station installation method |
| CN101843143A (en) * | 2007-10-31 | 2010-09-22 | 三菱电机株式会社 | Mobile communication system, base station, mobile station, and base station installation method |
| JP5242586B2 (en) * | 2007-10-31 | 2013-07-24 | 三菱電機株式会社 | Mobile communication system and mobile station |
| JP2010268209A (en) * | 2009-05-14 | 2010-11-25 | Nec Corp | Communication equipment, information providing method and program |
| JP2011119976A (en) * | 2009-12-03 | 2011-06-16 | Fujitsu Ltd | Base station, wireless controller, core network device and area map creation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990803 |