JPH05300084A - Data collection control system - Google Patents

Data collection control system

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Publication number
JPH05300084A
JPH05300084A JP4097580A JP9758092A JPH05300084A JP H05300084 A JPH05300084 A JP H05300084A JP 4097580 A JP4097580 A JP 4097580A JP 9758092 A JP9758092 A JP 9758092A JP H05300084 A JPH05300084 A JP H05300084A
Authority
JP
Japan
Prior art keywords
station
mobile station
base station
mobile
transmission power
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Withdrawn
Application number
JP4097580A
Other languages
Japanese (ja)
Inventor
Ikuo Hasebe
生男 長谷部
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP4097580A priority Critical patent/JPH05300084A/en
Publication of JPH05300084A publication Critical patent/JPH05300084A/en
Withdrawn legal-status Critical Current

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Abstract

PURPOSE:To collect data at a current position or the like of a mobile station without being disturbed due to talking by controlling transmission power of a mobile station, a base station and a forward station from a base station. CONSTITUTION:A base station 1 is provided with a transmission reception section 5 and a control section 6 and includes a management center and each of a forward station 2 and a mobile station 3 includes a transmission reception section and a control section, and the base station 1 and each forward station 2 are connected by a private line 4. Radio zones by the base station 1, the forward station 2 and the mobile station 3 are wide as 1A, 2A1, 2A2, 3A1, 3A2, 3A3 to collect data such as a current position of the mobile station 3 by polling. Then the base station 1, the forward station 2 and the mobile station 3 are controlled so as to obtain a transmission power to a degree not giving disturbance to the talking of other mobile station by the control from the base station 1. Thus, the radio zone is reduced as shown in 1B, 2B1, 2B2, 3B1, 3B2, 3B3 and data of a current position or the like of other mobile stations except the mobile station in talking are collected by polling.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、移動無線システムに於
ける移動局のデータを収集するデータ収集制御方式に関
する。タクシー,貨物輸送等の多数の自動車を運行させ
る業務に於いては、自動車の現在位置と空車/実車,積
荷等の活動状態等のデータを自動的に収集して、運行指
示を与えるAVMシステムが知られている。このような
データの収集は、基地局等の固定局と自動車に無線送受
信機を搭載した移動局との間の通話の合間に行われるシ
ステムが一般的であり、効率の良いデータ収集が要望さ
れている。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data collection control system for collecting data of mobile stations in a mobile radio system. In the business of operating many automobiles such as taxis and freight transportation, an AVM system that automatically collects data such as the current position of automobiles and the status of vacant / actual vehicles, cargoes, etc., and gives operation instructions is available. Are known. Such data collection is generally performed in a system between fixed stations such as base stations and mobile stations equipped with wireless transceivers in automobiles, and efficient data collection is required. ing.

【0002】[0002]

【従来の技術】複数の自動車の現在位置等を検出して表
示するAVMシステム(AutomaticVehicle Monitor
ing System )は、自動車の現在位置を、例えば、40
0〜500m等の無線ゾーン単位に認識できるものであ
り、このAVMシステムに於いては、半自動方式,分散
受信方式,分散送信方式が知られている。半自動方式
は、移動局に於いて現在位置等のデータを手動で入力
し、送信ボタン操作等により、そのデータを基地局等の
管理センタに通話と同一の周波数で無線送信し、管理セ
ンタでは、現在位置や空車/実車等のデータを処理して
地図上等に表示するものである。この半自動方式は、手
動入力の為に操作性が悪く、且つ現在位置が不正確とな
る欠点がある。
2. Description of the Related Art An AVM system (Automatic Vehicle Monitor) for detecting and displaying current positions of a plurality of automobiles.
ing System) indicates the current position of the vehicle, for example, 40
It can be recognized in units of wireless zones such as 0 to 500 m. In this AVM system, a semi-automatic system, a distributed reception system, and a distributed transmission system are known. The semi-automatic method is to manually input the data such as the current position in the mobile station and wirelessly transmit the data to the management center such as the base station at the same frequency as the call by operating the transmission button etc. This is to process data such as the current position and empty / actual vehicles and display them on a map or the like. This semi-automatic method has the disadvantages of poor operability due to manual input and inaccurate current position.

【0003】又分散受信方式は、移動局からの車両番号
等を受信する受信専用局を分散配置しておき、移動局に
最も近い受信専用局が移動局からの車両番号等のデータ
を受信すると、有線回線で管理センタに送信し、管理セ
ンタは受信専用局を識別し、且つ車両番号等により移動
局の現在位置等を認識するものである。この分散受信方
式は、分散配置された受信専用局から管理センタまで有
線回線を布設する必要があり、又受信専用局は、タクシ
ー会社や運送会社毎に設置する必要があるから、経済的
な問題があり、又複数の移動局が集中した時に受信専用
局の周辺で混信が生じる欠点がある。
In the distributed reception system, dedicated reception stations for receiving vehicle numbers from mobile stations are arranged in a distributed manner, and when the dedicated reception station closest to the mobile station receives data such as vehicle numbers from the mobile stations. , Is transmitted to the management center through a wired line, the management center identifies the reception-only station, and recognizes the current position of the mobile station based on the vehicle number and the like. This distributed reception method requires a cable line to be installed from the distributed reception-only stations to the management center, and the reception-dedicated stations must be installed at each taxi company or transportation company, which is an economic problem. However, there is a drawback that interference occurs around the dedicated reception station when a plurality of mobile stations are concentrated.

【0004】又分散送信方式は、分散配置された送信専
用のサインポストからその地点の位置情報を送信し、そ
の位置情報を受信した移動局は、管理センタからのポー
リング等に従って、車両番号や空車/実車等のデータを
付加して管理センタに無線送信するものである。この分
散送信方式は、サインポストを各タクシー会社や各運送
会社等に共用化できる利点があり、又管理センタに於い
ては、必要時にポーリング等により移動局のデータを収
集できる利点がある。
In the distributed transmission system, the position information of the point is transmitted from the distributed transmission-only sign posts, and the mobile station receiving the position information receives a vehicle number or an empty vehicle according to polling from the management center. / Adds data such as the actual vehicle and wirelessly transmits it to the management center. This distributed transmission method has an advantage that the sign post can be shared by each taxi company, each transportation company, and the like, and the management center has an advantage that data of the mobile station can be collected by polling or the like when necessary.

【0005】[0005]

【発明が解決しようとする問題点】移動無線システムに
於けるデータ収集に於いては、前述の半自動方式,分散
受信方式,分散送信方式の中の分散送信方式が最も有利
である。しかし、無線通話の周波数を用いてデータを送
信するものであるから、管理センタからの配車指示や道
路状態の案内等の通話が多い時間帯に於いては、データ
を送信する時間がなくなるか、又は送信データと通話内
容との混信により、管理センタでは正確な現在位置を認
識できなくなる。このような状態となると、例えば、タ
クシーの配車指示に於いては、管理センタでタクシーの
現在位置を確認する為の通話が増加するから、現在位置
等のデータ収集の時間が更に減少する。或いは、通話を
一時強制的に中断してデータ収集を行う必要が生じ、配
車効率が低下する。このように通話とデータ収集とを効
率的に運用することが困難であった。本発明は、通話に
よる妨害を受けることなく、データを収集することを目
的とする。
DISCLOSURE OF THE INVENTION In data collection in a mobile radio system, the distributed transmission method among the above-mentioned semi-automatic method, distributed reception method, and distributed transmission method is most advantageous. However, since the data is transmitted using the frequency of the wireless call, during a time when there are many calls such as dispatch instructions from the management center and guidance on road conditions, there is no time to send the data, Alternatively, due to the interference between the transmitted data and the content of the call, the management center cannot recognize the correct current position. In such a state, for example, in the taxi dispatch instruction, the number of calls for confirming the current position of the taxi at the management center is increased, so that the time for collecting the data such as the current position is further reduced. Alternatively, it becomes necessary to temporarily and forcibly interrupt the call to collect data, which reduces the dispatch efficiency. As described above, it is difficult to efficiently operate the call and the data collection. The present invention aims to collect data without being disturbed by a call.

【0006】[0006]

【課題を解決するための手段】本発明のデータ収集制御
方式は、図1を参照して説明すると、基地局1又はこの
基地局に専用線を介して接続された複数の前進局2と移
動局3との間で無線通信を行い、この移動局3の現在位
置等のデータを基地局1に於いて収集するデータ収集制
御方式に於いて、移動局3と基地局1又は前進局2との
間で通話を開始する時に、この移動局3の送信電力及び
この移動局3をサービスエリアに含む基地局1又は前進
局2の送信電力を、他の移動局の現在位置等のデータ収
集を妨害しないように、基地局1から制御するものであ
る。
A data collection control system of the present invention will be described with reference to FIG. 1. The base station 1 or a plurality of forward stations 2 connected to the base station via dedicated lines are used to move. In the data collection control system in which the base station 1 collects data such as the current position of the mobile station 3 by wireless communication with the station 3, the mobile station 3 and the base station 1 or the forward station 2 When a call is started between two mobile stations, the transmission power of the mobile station 3 and the transmission power of the base station 1 or the forward station 2 including the mobile station 3 in the service area are used to collect data such as the current positions of other mobile stations. The base station 1 controls so as not to interfere.

【0007】[0007]

【作用】基地局1は送受信部5と制御部6とを備えると
共に管理センタを含み、又各前進局2と移動局3も同様
に送受信部と制御部とを備えており、基地局1と各前進
局2とは専用線4により接続されている。基地局1と前
進局2と移動局3の無線ゾーンは通常は1A,2A1,
2A2,3A1,3A2,3A3のように広くし、ポー
リングにより移動局3の現在位置等のデータを収集す
る。そして、通話を開始する時に、基地局1からの制御
により、他の移動局の通話に妨害を与えない程度の送信
電力となるように、基地局1,前進局2及び移動局3を
制御する。従って、無線ゾーンは、1B,2B1,2B
2,3B1,3B2,3B3に示すように縮小し、通話
中の移動局を除いてポーリングにより他の移動局の現在
位置等のデータを収集することができる。
The base station 1 includes the transmitting / receiving unit 5 and the control unit 6 and includes the management center, and each forward station 2 and the mobile station 3 also include the transmitting / receiving unit and the control unit. Each forward station 2 is connected by a dedicated line 4. The radio zones of the base station 1, the forward station 2, and the mobile station 3 are usually 1A, 2A1,
The data is widened like 2A2, 3A1, 3A2, 3A3, and data such as the current position of the mobile station 3 is collected by polling. Then, when starting a call, the base station 1, the forward station 2, and the mobile station 3 are controlled by the control from the base station 1 so that the transmission power does not interfere with the call of other mobile stations. .. Therefore, the wireless zone is 1B, 2B1, 2B
2, 3B1, 3B2, 3B3 can be reduced and data such as the current positions of other mobile stations can be collected by polling except for the mobile station in communication.

【0008】[0008]

【実施例】図2は本発明の実施例の移動局の説明図であ
り、11は無線送受信部、12は制御部、13はAVM
処理部、14はマイクロホン、15はスピーカ、16は
GPS受信機、17はサインポスト受信機、18A,1
8B,18Cはアンテナ、19はGPS(Global Pos
itioning System )衛星である。この移動局の無線送
受信部11は、基地局からの送信電力制御信号に従って
制御部12により送信電力が制御される。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 is an explanatory diagram of a mobile station according to an embodiment of the present invention.
Processing unit, 14 is a microphone, 15 is a speaker, 16 is a GPS receiver, 17 is a sign post receiver, 18A, 1
8B and 18C are antennas, 19 is GPS (Global Pos)
itioning System) satellite. The radio transmitter / receiver 11 of the mobile station is controlled in transmission power by the controller 12 according to the transmission power control signal from the base station.

【0009】又移動局は、分散送信方式によるサインポ
ストからの位置情報をサインポスト受信機17により受
信し、GPS衛星19からのGPS信号をGPS受信機
16により受信し、AVM処理部13に於いて現在位置
データを作成し、基地局又は前進局からのポーリング信
号を無線送受信部11で受信すると、制御部12は、A
VM処理部13で作成した現在位置データを無線送受信
部11から送信する機能を有している。又サインポスト
からの位置情報は、15ビットのフレーム同期信号と、
10ビットの地域コードと、15ビットの地点Xコード
と、15ビットの地点Yコードとの合計55ビット構成
とし、無線周波数426MHzで、伝送速度は200b
psで常時送信されている。このサインポストからの位
置情報を受信して、AVM処理部13に於ける現在位置
のデータを更新する。
The mobile station receives the position information from the sign post by the distributed transmission system by the sign post receiver 17, receives the GPS signal from the GPS satellite 19 by the GPS receiver 16, and in the AVM processor 13. When the wireless transmission / reception unit 11 receives the polling signal from the base station or the forward station, the control unit 12 causes A
The wireless transmission / reception unit 11 has a function of transmitting the current position data created by the VM processing unit 13. The position information from the sign post is a 15-bit frame sync signal,
A total of 55 bits including a 10-bit area code, a 15-bit point X code, and a 15-bit point Y code is used. The radio frequency is 426 MHz and the transmission rate is 200 b.
Always sent at ps. The position information from the sign post is received, and the data of the current position in the AVM processing unit 13 is updated.

【0010】又GPS衛星19からのGPS信号は、L
1帯(1.5GHz)とL2帯(1.2GHz)との2
周波で送信されており、L1帯は、Pコード及びC/A
コード、L2帯はPコードのみである。原理的には、3
個のGPS衛星からのGPS信号を受信して、受信地点
の三次元座標を求めることができる。このGPS受信機
16を搭載した移動局は、サインポストが設置されてい
ない地点に於いても、基地局へ現在位置のデータを送信
することができる。
The GPS signal from the GPS satellite 19 is L
2 of 1 band (1.5 GHz) and L2 band (1.2 GHz)
It is transmitted at high frequency, L1 band is P code and C / A
Code, L2 band is P code only. In principle, 3
By receiving GPS signals from a number of GPS satellites, the three-dimensional coordinates of the receiving point can be obtained. The mobile station equipped with the GPS receiver 16 can transmit the data of the current position to the base station even at the point where the sign post is not installed.

【0011】図3は本発明の実施例の基地局,前進局及
び管理センタの説明図であり、21は基地局、22−
1,22−2は前進局、23は管理センタ、24は無線
送受信部、25は制御部、26,27は端末装置、28
は信号路切替部、29はAVM装置、30は専用線であ
る。又RDは受信データ、SDは送信データ、S1は信
号路制御信号、S2は送信電力制御信号である。
FIG. 3 is an explanatory diagram of a base station, a forward station and a management center according to an embodiment of the present invention, and 21 is a base station, 22-.
1, 22-2 are forward stations, 23 is a management center, 24 is a wireless transmission / reception unit, 25 is a control unit, 26 and 27 are terminal devices, 28
Is a signal path switching unit, 29 is an AVM device, and 30 is a dedicated line. Further, RD is reception data, SD is transmission data, S1 is a signal path control signal, and S2 is a transmission power control signal.

【0012】前進局22−1,22−2は、専用線30
を介して管理センタ23と接続された場合を示すが、こ
の管理センタ23は基地局21と一体的に構成される場
合が一般的であるから、各前進局22−1,22−2は
基地局21と専用線30を介して接続された状態と等価
となる。又端末装置26,27は、専用線30に対して
音声信号及びデータの送受信機能を含み、又AVM装置
29は、タクシー等の現在位置をタクシー車両番号等に
より地図上に表示する表示装置等を含むものであり、配
車指示等の音声信号も送信データSDと同一の経路で送
信される。又問い合わせ等の音声信号は受信データRD
と同一の経路で受信される。又送信電力制御信号S2
は、基地局21と前進局22−1,22−2の無線送受
信部24の送信電力を制御し、且つ移動局の送信電力を
制御する為のものである。
The forward stations 22-1, 22-2 are connected to the leased line 30.
The case where the forward center 22-1 and the forward station 22-1 are connected to the management center 23 via the This is equivalent to the state of being connected to the station 21 via the dedicated line 30. The terminal devices 26 and 27 include a function of transmitting and receiving voice signals and data to and from the dedicated line 30, and the AVM device 29 includes a display device or the like for displaying the current position of a taxi or the like on the map by the taxi vehicle number or the like. A voice signal such as a vehicle dispatch instruction is also transmitted via the same route as the transmission data SD. In addition, voice signals for inquiries are received data RD
It is received on the same route as. Also, the transmission power control signal S2
Is for controlling the transmission power of the wireless transceiver unit 24 of the base station 21 and the forward stations 22-1, 22-2, and for controlling the transmission power of the mobile station.

【0013】図4は本発明の実施例の移動局呼出しのフ
ローチャートを示し、移動局を管理センタ23から呼出
して通話を行う場合であり、例えば、タクシーに配車指
示を行う場合に相当する。即ち、タクシーに対応する移
動局の現在位置等のデータを収集する為のポーリング中
であるか否かを判断し(A1)、ポーリング中の場合
は、全移動局に対してポーリング中止信号を送出する
(A2)。
FIG. 4 shows a flow chart of calling a mobile station according to the embodiment of the present invention, which is a case where the mobile station is called from the management center 23 to make a call, which corresponds to, for example, a case where a taxi is instructed to dispatch. That is, it is judged whether or not polling for collecting data such as the current position of the mobile station corresponding to the taxi is in progress (A1), and if polling is in progress, a polling stop signal is sent to all mobile stations. Yes (A2).

【0014】このポーリング中止信号を送出した後、又
はポーリング中でない時は、AVM装置29が保持した
位置情報を基に、呼出目的の移動局が所在する基地局2
1を決定する(A3)。この場合、図3に於いては、基
地局21,前進局22−1,22−2の何れかを決定
し、AVM装置29は信号路切替部28を制御し、AV
M装置29からの音声信号を端末装置27から専用線3
0を介して、基地局21又は前進局22−1,22−2
の端末装置26に送出し、端末装置26から制御部25
の制御により無線送受信部24から送信する(A4)。
即ち、管理センタ23から音声信号によって呼出目的の
移動局の呼出しを行う。
After sending this polling stop signal or when polling is not in progress, the base station 2 in which the mobile station to be called is located based on the position information held by the AVM device 29.
1 is determined (A3). In this case, in FIG. 3, one of the base station 21 and the forward stations 22-1 and 22-2 is determined, the AVM device 29 controls the signal path switching unit 28, and
The audio signal from the M device 29 is transmitted from the terminal device 27 to the leased line 3
0 through the base station 21 or the forward stations 22-1, 22-2
To the control unit 25 from the terminal device 26.
It is transmitted from the wireless transmission / reception unit 24 under the control of (A4).
That is, the mobile station for the purpose of calling is called by the voice signal from the management center 23.

【0015】AVM装置29は、移動局からの応答の有
無を監視し(A5)、所定時間内に応答がなければ、他
の基地局の無線ゾーンに移動局が移動したと判断し、信
号路切替部28を制御してAVM装置29と接続される
端末装置27を切替えることにより、他の基地局(又は
前進局)より移動局を呼出す(A6)。
The AVM device 29 monitors whether or not there is a response from the mobile station (A5), and if there is no response within a predetermined time, it judges that the mobile station has moved to the radio zone of another base station, and the signal path. By controlling the switching unit 28 to switch the terminal device 27 connected to the AVM device 29, the mobile station is called from another base station (or forward station) (A6).

【0016】移動局からの応答があると、ATIS信号
に含まれるGPS受信機16による位置情報又はサイン
ポスト受信機17による位置情報を解析する(A7)。
この位置情報が信頼できるものであるか否かを判断する
(A8)。即ち、移動局が受信処理した位置情報は、現
在時点からどの位の時間前であるか、又は誤差係数は許
容値以下か等により、信頼性を判断する。
When there is a response from the mobile station, the position information by the GPS receiver 16 or the position information by the sign post receiver 17 included in the ATIS signal is analyzed (A7).
It is determined whether or not this position information is reliable (A8). That is, the reliability is determined based on how long ago the current position information received by the mobile station is from the current time, or whether the error coefficient is less than or equal to the allowable value.

【0017】位置情報の信頼性が有ると判断した場合
は、移動局の所在位置にマッチングした送信電力になる
ように、送信電力制御信号S2により基地局(前進局)
の送信電力を調整し、且つ移動局の送信電力を制御する
為の送信電力制御信号を送出する(A10)。又位置情
報の信頼性が無いと判断した場合は、移動局の信号の電
界強度情報解析に従って送信電力制御信号S2により基
地局(前進局)の送信電力を調整し、且つ移動局の送信
電力を制御する為の送信電力制御信号を送出する(A
9)。この移動局への送信電力制御信号は、音声信号の
フレームの先頭等に付加されて送信される。
When it is determined that the position information is reliable, the base station (forward station) is controlled by the transmission power control signal S2 so that the transmission power matches the location of the mobile station.
And transmits a transmission power control signal for adjusting the transmission power of the mobile station and controlling the transmission power of the mobile station (A10). When it is determined that the position information is not reliable, the transmission power of the base station (forward station) is adjusted by the transmission power control signal S2 according to the electric field strength information analysis of the signal of the mobile station, and the transmission power of the mobile station is adjusted. Send a transmission power control signal for control (A
9). The transmission power control signal to the mobile station is added to the head of the frame of the voice signal and transmitted.

【0018】基地局(前進局)と移動局との送信電力が
制御されると、例えば、図1に示す基地局1と前進局2
との無線ゾーンは、実線の1A,2A1,2A2から点
線の1B,2B1,2B2に示すように縮小され、又移
動局3による無線ゾーンは、太線の3A1,3A2,3
A3から一点鎖線の3B1,3B2,3B3に示すよう
に縮小される。このような無線ゾーンに於いて、移動局
3は、それぞれ基地局1又は前進局2との間で無線通信
が可能であるから、通話又はポーリングによるデータ通
信が可能である。従って、通話中の移動局が属する基地
局1又は前進局2は、移動局3の現在位置等のデータを
収集しないが、他の基地局1又は前進局2からそれぞれ
自局の無線ゾーン内の移動局に対して、現在位置等のデ
ータを送出するようにポーリング制御を行うことができ
る。
When the transmission powers of the base station (forward station) and the mobile station are controlled, for example, the base station 1 and the forward station 2 shown in FIG.
, And the wireless zones by solid lines 1A, 2A1, 2A2 are reduced as shown by dotted lines 1B, 2B1, 2B2, and the wireless zones by the mobile station 3 are thick lines 3A1, 3A2, 3
It is reduced from A3 as indicated by the one-dot chain lines 3B1, 3B2, 3B3. In such a wireless zone, the mobile station 3 can perform wireless communication with the base station 1 or the forward station 2, respectively, and thus can perform data communication by calling or polling. Therefore, the base station 1 or the forward station 2 to which the mobile station in the call belongs does not collect the data such as the current position of the mobile station 3, but the other base stations 1 or the forward stations 2 are in the respective wireless zones of their own stations. Polling control can be performed so that data such as the current position is transmitted to the mobile station.

【0019】従って、移動局との通話を妨害しない程度
に、他の基地局(前進局)はポーリングを開始する(A
11)。即ち、或る移動局が通話中に於いても、その通
話を妨害しない程度で、他の基地局(前進局)からポー
リングによって他の移動局の現在位置等のデータを収集
することができる。そして、移動局との間の通話が終了
したか否かを判断し(A12)、通話終了を確認する
と、全基地局(前進局)と全移動局に対して送信電力制
御解除を同報送信等によって通知し(A13)、それに
より、全基地局(前進局)と全移動局とは、元の送信電
力により呼出しやデータ収集の為のポーリングが行われ
る。この場合、通話中の基地局又は前進局と移動局との
送信電力を制御し、他の基地局又は前進局と移動局との
送信電力は通常の値としておき、ポーリング開始により
データ収集を行う基地局と、ポーリングにより指定され
た移動局との送信電力を制御し、通話に妨害を与えない
ようにして、データを収集することもできる。
Therefore, another base station (forward station) starts polling to the extent that it does not interfere with the call with the mobile station (A).
11). That is, even when a mobile station is in a call, data such as the current position of another mobile station can be collected by polling from another base station (forward station) to the extent that the call is not disturbed. Then, it is judged whether or not the call with the mobile station is ended (A12), and when the end of the call is confirmed, the transmission power control release is broadcast to all the base stations (forward stations) and all the mobile stations. Etc. (A13), whereby all the base stations (forward stations) and all mobile stations are called by the original transmission power and polled for data collection. In this case, the transmission power between the base station or forward station and the mobile station in communication is controlled, the transmission power between the other base station or forward station and the mobile station is set to a normal value, and data collection is performed by starting polling. Data can also be collected by controlling the transmission power between the base station and the mobile station designated by polling so as not to interfere with the call.

【0020】図5は本発明の実施例の管理センタ呼出し
のフローチャートを示し、移動局から管理センタを呼出
す場合であり、例えば、道路状況等をタクシーから管理
センタに問い合わせる場合に相当する。このタクシーに
対応する移動局から管理センタ23を呼出し(B1)、
この管理センタ23がその呼出しを受信する(B2)
と、ポーリング中であるか否かを判断する(B3)。ポ
ーリング中の場合は、全移動局に対してポーリング中止
信号を送出する(B4)。
FIG. 5 shows a flow chart of calling the management center according to the embodiment of the present invention, which is a case where the mobile station calls the management center, and corresponds to, for example, a case where a taxi inquires of the management center from the taxi. Call the management center 23 from the mobile station corresponding to this taxi (B1),
This management center 23 receives the call (B2).
Then, it is determined whether or not polling is in progress (B3). If polling is in progress, a polling stop signal is sent to all mobile stations (B4).

【0021】このポーリング中止信号を送出した後、又
はポーリング中でない場合は、移動局のATIS信号に
含まれる位置情報を解析し(B5)、この位置情報が信
頼できるか否かを判断する(B6)。即ち、前述の実施
例と同様に、移動局が受信処理した位置情報は、現在時
点からどの位の時間前であるか、又は誤差係数は許容値
以下か等により、信頼性を判断する。
After sending the polling stop signal or when polling is not in progress, the position information contained in the ATIS signal of the mobile station is analyzed (B5) and it is judged whether or not this position information is reliable (B6). ). That is, as in the above-described embodiment, the reliability is determined based on how long ago the position information received by the mobile station is processed from the present time, or whether the error coefficient is less than or equal to the allowable value.

【0022】位置情報の信頼性が有ると判断した場合
は、移動局の所在位置にマッチングした送信電力になる
ように、送信電力制御信号S2により基地局(前進局)
の送信電力を調整し、且つ移動局の送信電力を制御する
為の送信電力制御信号を送出する(B8)。又位置情報
の信頼性が無いと判断した場合は、移動局の信号の電界
強度情報解析に従って、送信電力制御信号S2により基
地局(前進局)の送信電力を調整し、且つ移動局の送信
電力を制御する為の送信電力制御信号を送出する(B
7)。
When it is determined that the position information is reliable, the base station (forward station) is controlled by the transmission power control signal S2 so that the transmission power matches the location of the mobile station.
The transmission power control signal for adjusting the transmission power of the mobile station and controlling the transmission power of the mobile station (B8). When it is determined that the position information is not reliable, the transmission power of the base station (forward station) is adjusted by the transmission power control signal S2 according to the electric field strength information analysis of the signal of the mobile station, and the transmission power of the mobile station is adjusted. A transmission power control signal for controlling the
7).

【0023】このような基地局(前進局)と移動局との
送信電力の制御により、前述の実施例と同様に、図1に
示す基地局1と前進局2との無線ゾーンは、実線の1
A,2A1,2A2から点線の1B,2B1,2B2に
示すように縮小され、又移動局3による無線ゾーンは、
太線の3A1,3A2,3A3から一点鎖線の3B1,
3B2,3B3に示すように縮小される。このような無
線ゾーンに於いて、移動局3は、それぞれ基地局1又は
前進局2との間で無線通信が可能であるから、通話又は
ポーリングによるデータ通信が可能である。
By controlling the transmission power between the base station (forward station) and the mobile station, the wireless zone between the base station 1 and the forward station 2 shown in FIG. 1
A, 2A1, 2A2 is reduced as shown by dotted lines 1B, 2B1, 2B2, and the wireless zone by the mobile station 3 is
Thick line 3A1, 3A2, 3A3 to dashed line 3B1,
It is reduced as shown in 3B2 and 3B3. In such a wireless zone, the mobile station 3 can perform wireless communication with the base station 1 or the forward station 2, respectively, and thus can perform data communication by calling or polling.

【0024】次に、移動局との通話を妨害しない程度
で、他の基地局(前進局)はポーリングを開始する(B
9)。即ち、或る移動局が通話中に於いても、その通話
を妨害しない程度で、他の基地局(前進局)からポーリ
ングによって他の移動局の現在位置等のデータを収集す
ることができる。そして、通話中の移動局の通話が終了
したか否かを判断し(B10)、通話終了を確認する
と、全基地局(前進局)と全移動局に対して送信電力制
御解除を同報送信等によって通知し(B11)、元の送
信電力により呼出しやデータ収集の為のポーリングが行
われる。
Next, another base station (forward station) starts polling (B) without disturbing the call with the mobile station.
9). That is, even when a mobile station is in a call, data such as the current position of another mobile station can be collected by polling from another base station (forward station) to the extent that the call is not disturbed. Then, it is judged whether or not the call of the mobile station in the call is ended (B10), and when the call end is confirmed, the transmission power control release is broadcasted to all the base stations (forward stations) and all the mobile stations. Etc. (B11), and the original transmission power is used for polling for calling and data collection.

【0025】[0025]

【発明の効果】以上説明したように、本発明は、移動局
3と基地局1又は前進局2との間で通話を開始する時
に、移動局3の送信電力及びこの移動局3をサービスエ
リアに含む基地局1又は前進局2の送信電力を、他の移
動局の現在位置等のデータ収集を妨害しないように基地
局1から制御するものであり、従って、通話中以外の基
地局1又は前進局2からは、ポーリングによって移動局
3の現在位置等のデータを収集することができる。即
ち、通話中に於いても、他の基地局1又は前進局2のサ
ービスエリアの移動局の現在位置等のデータを収集する
ことができるから、自動車の現在位置を正確に把握する
ことが可能となる利点がある。
As described above, according to the present invention, when a call is started between the mobile station 3 and the base station 1 or the forward station 2, the transmission power of the mobile station 3 and the service area of the mobile station 3 are set. The transmission power of the base station 1 or the forward station 2 included in 1 is controlled by the base station 1 so as not to interfere with the data collection of the current positions of other mobile stations. Data such as the current position of the mobile station 3 can be collected from the forward station 2 by polling. That is, even during a call, data such as the current position of the mobile station in the service area of another base station 1 or the forward station 2 can be collected, so that the current position of the vehicle can be accurately grasped. There is an advantage that.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の原理説明図である。FIG. 1 is a diagram illustrating the principle of the present invention.

【図2】本発明の実施例の移動局の説明図である。FIG. 2 is an explanatory diagram of a mobile station according to the embodiment of this invention.

【図3】本発明の実施例の基地局,前進局及び管理セン
タの説明図である。
FIG. 3 is an explanatory diagram of a base station, a forward station, and a management center according to the embodiment of this invention.

【図4】本発明の実施例の移動局呼出しのフローチャー
トである。
FIG. 4 is a flowchart of a mobile station calling according to an embodiment of the present invention.

【図5】本発明の実施例の管理センタ呼出しのフローチ
ャートである。
FIG. 5 is a flowchart for calling a management center according to the embodiment of this invention.

【符号の説明】[Explanation of symbols]

1 基地局 2 前進局 3 移動局 4 専用線 5 送受信部 6 制御部 1 base station 2 forward station 3 mobile station 4 dedicated line 5 transceiver section 6 control section

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 基地局(1)又は該基地局(1)に専用
線を介して接続された複数の前進局(2)と移動局
(3)との間で無線通信を行い、該移動局(3)の現在
位置等のデータを前記基地局(1)に於いて収集するデ
ータ収集制御方式に於いて、 前記移動局(3)と前記基地局(1)又は前記前進局
(2)との間で通話を開始する時に、該移動局(3)の
送信電力及び該移動局(3)をサービスエリアに含む前
記基地局(1)又は前記前進局(2)の送信電力を、他
の移動局(3)の現在位置等のデータ収集を妨害しない
ように、前記基地局(1)から制御することを特徴とす
るデータ収集制御方式。
1. A mobile station (3) wirelessly communicates between a mobile station (3) and a base station (1) or a plurality of forward stations (2) connected to the base station (1) via dedicated lines. In a data collection control system for collecting data such as the current position of a station (3) in the base station (1), the mobile station (3) and the base station (1) or the forward station (2) When a call is initiated between the mobile station (3), the transmission power of the mobile station (3) and the transmission power of the base station (1) or the forward station (2) including the mobile station (3) in the service area, The data collection control method is characterized in that the base station (1) controls the mobile station (3) so as not to interfere with data collection such as the current position of the mobile station (3).
JP4097580A 1992-04-17 1992-04-17 Data collection control system Withdrawn JPH05300084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4097580A JPH05300084A (en) 1992-04-17 1992-04-17 Data collection control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4097580A JPH05300084A (en) 1992-04-17 1992-04-17 Data collection control system

Publications (1)

Publication Number Publication Date
JPH05300084A true JPH05300084A (en) 1993-11-12

Family

ID=14196186

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4097580A Withdrawn JPH05300084A (en) 1992-04-17 1992-04-17 Data collection control system

Country Status (1)

Country Link
JP (1) JPH05300084A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08331634A (en) * 1995-05-31 1996-12-13 Sanyo Electric Co Ltd Radio communication equipment
JP2006295963A (en) * 1996-07-10 2006-10-26 Motorola Inc Method and apparatus for geographical control in communications system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08331634A (en) * 1995-05-31 1996-12-13 Sanyo Electric Co Ltd Radio communication equipment
JP2006295963A (en) * 1996-07-10 2006-10-26 Motorola Inc Method and apparatus for geographical control in communications system

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