JPS63100832A - Base station selection system - Google Patents
Base station selection systemInfo
- Publication number
- JPS63100832A JPS63100832A JP61245585A JP24558586A JPS63100832A JP S63100832 A JPS63100832 A JP S63100832A JP 61245585 A JP61245585 A JP 61245585A JP 24558586 A JP24558586 A JP 24558586A JP S63100832 A JPS63100832 A JP S63100832A
- Authority
- JP
- Japan
- Prior art keywords
- electric field
- base station
- station
- field information
- signal
- 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.)
- Pending
Links
- 230000005684 electric field Effects 0.000 claims abstract description 48
- 238000010187 selection method Methods 0.000 claims description 7
- 238000010295 mobile communication Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は基地局選択方式、特に複数の分散基地局を使用
する移動通信システムに於いて最も受信電界の高い基地
局を選択する基地局選択方式に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a base station selection method, particularly a base station selection method for selecting a base station with the highest received electric field in a mobile communication system using a plurality of distributed base stations. It is related to the method.
従来の基地局選択装置は、第２図に示すように。 A conventional base station selection device is shown in FIG.
電界に対応した周波数をもつ信号を基地局から送出し、
中央局の基地局選択装置でその信号の周波数を判定し電
界値を復元し各局の電界を比較していた。Ｍ２図におい
て、２００は中央局選択装置。A signal with a frequency corresponding to the electric field is sent from the base station,
A base station selection device in the central station determined the frequency of the signal, restored the electric field value, and compared the electric fields of each station. In the M2 diagram, 200 is a central station selection device.
１１０．１２０，１３０は基地局、１は移動局で各基地
局１１０，１２０，１３０では受信電界の大いさを周波
数ｆ１． ｆ２． ｆ６のいづれかの信号に変換し、信
号線１１１．１２１．１３１を経て中央局へ送シ、中央
局の基地局選択装置２００では周波数検出器３１０，３
２０，３３０で周波数の大いさを電圧レベルに変換し、
比較器２４０で比較して、最も大きい受信電界の基地局
を切替器２１１．２２１，２３１で切替え選択し、固定
局３００と接続する。110, 120, 130 are base stations, 1 is a mobile station, and each base station 110, 120, 130 indicates the magnitude of the received electric field at frequency f1. f2. f6 signal, and sends it to the central station via signal lines 111, 121, 131, and frequency detectors 310, 3 in the base station selection device 200 of the central station.
20,330 to convert the frequency magnitude into voltage level,
The comparator 240 compares the base station, and the switch 211, 221, 231 selects the base station with the largest received electric field, and connects it to the fixed station 300.
上述したように従来のものは基地局で電界値にを送出す
るために決められた周波数の発信器及び中央局では検出
器が必要となっていた。このため基地局の制御が複雑と
なる問題点があった。As mentioned above, the conventional system requires an oscillator at a predetermined frequency for transmitting electric field values at the base station and a detector at the central station. Therefore, there was a problem that control of the base station was complicated.
本発明は従来のもののこのような問題点を解決し、基地
局の構成を簡単とし、経済的な基地局選択方式を提供す
るものである。The present invention solves these problems of the conventional system, simplifies the configuration of a base station, and provides an economical base station selection method.
本発明の基地局選択方式は移動局からの電波を複数の分
散基地局で受信しその信号の中の一つを中央局の基地局
選択装置で選択する移動通信システムに於いて、＠記基
地局は１つの電界判定値で判定した２値の電界情報を中
央局へ送る電界情報送出装置を、中央局は基地局から送
られて来る前記２値の電界情報の時間率を測定する時間
率測定装置と、前記時間率の比較装置を有して構成され
る。The base station selection method of the present invention is used in a mobile communication system in which radio waves from a mobile station are received by a plurality of distributed base stations, and one of the signals is selected by a base station selection device in a central station. The station uses an electric field information transmitting device that sends binary electric field information determined by one electric field determination value to the central station, and the central station measures the time rate of the binary electric field information sent from the base station. It is configured to include a measuring device and a comparison device for the time rate.
次に本発明の一実施例について図面を参照して説明する
。第１図は本発明の一実施例のブロック図である。移動
局１より送出された電波は複数の基地局１１０，１２０
，１３０のいづれかで受信される。基地局の設置条件に
よっては２つ以上の局で受信されることもある。基地局
は受信信号以外に電界情報を信号線１１１，１２１，１
３１により送出する。基地局選択装置２００では、電界
情報を時間率測定器２１０，２２０．２３０により電界
の高低を測定する。各基地局の電界値を比較器２４０で
比較し、最も電界の高い局のスイッチ２１１，２２１又
は２３１を選択しそれを閉じる。このようにして電界の
最も高い局の信号が固定局３００に伝送される。Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of one embodiment of the present invention. The radio waves transmitted from the mobile station 1 are transmitted to multiple base stations 110 and 120.
, 130. Depending on the installation conditions of the base station, the signal may be received by two or more stations. In addition to the received signal, the base station transmits electric field information to signal lines 111, 121, 1.
31. In the base station selection device 200, the electric field information is measured by time rate measuring devices 210, 220, and 230 to measure the height of the electric field. The electric field values of each base station are compared by a comparator 240, and the switch 211, 221 or 231 of the station with the highest electric field is selected and closed. In this way, the signal of the station with the highest electric field is transmitted to the fixed station 300.
第３図は基地局に於ける電界情報の送出方法を示してい
る。第３図に於いて（ａ）は電界の高い時。FIG. 3 shows a method for transmitting electric field information at a base station. In Figure 3, (a) is when the electric field is high.
（ｂ）は低い時を示し、（１）は電属とそのスレショル
ドを示す図、（２）は送出される電界情報を示す。電界
情報は１つのスレショルドレベル（電界判」定値）Ｌで
判定され、それ以上か以下かを基地局選択装置に電界情
報として知らせる。移動局から送られてくる電波の大い
さはフェージングにより変動していたため、平均電界が
高い時（第３図（ａ））はスレッショルドより上にある
時間が多い。電界が低くなる（第３図（ｂ）につれて電
界がスレッショルド以下の時間が多くなって来る。(b) shows when it is low, (1) shows the electric field and its threshold, and (2) shows the transmitted electric field information. The electric field information is determined by one threshold level (electric field judgment fixed value) L, and whether it is higher or lower than that is notified to the base station selection device as the electric field information. Since the magnitude of the radio waves sent from the mobile station fluctuated due to fading, when the average electric field is high (FIG. 3(a)), it is often above the threshold. As the electric field becomes lower (FIG. 3(b)), the time when the electric field is below the threshold increases.
第４図は選択装置に於ける時間率の測定回路及び比較回
路の一例の構成図である。基地局から送られて来る電界
情報の時間率を求めるためにカウンタ２１３，２２３，
２３３を使用する。クロック発振器２４１の３２クロツ
ク毎にタイミングパルスを作シ、その間に基地局からの
電界情報は何ノ母ルス分がスレショルド以上となってい
るかをカウンタ２１３，２２３，２３３で測定する。こ
のカウンタの値が各基地局の電界のスレショルド以上の
時間率となる。各基地局の時間率が大きいことは基地局
の入力電界が高いことを示し、その時間率ヲマグニチュ
ードコンノぞレータ２４３ 、２４４゜２４５により比
較して、その値をデコーダ２４６とＯＲ回路２４７，２
４８，２４９でスイッチ情報に変換し、ラッチ回路２５
０，２５１，２５２で正しいスイッチ情報をラッテして
各スイッチを制御する。FIG. 4 is a configuration diagram of an example of a time rate measuring circuit and a comparing circuit in the selection device. In order to obtain the time rate of electric field information sent from the base station, counters 213, 223,
233 is used. A timing pulse is generated every 32 clocks of the clock oscillator 241, and during that time, counters 213, 223, and 233 measure how many pulses of electric field information from the base station exceeds a threshold. The value of this counter is the percentage of time that the electric field of each base station is equal to or higher than the threshold. A large time ratio of each base station indicates that the input electric field of the base station is high, and the time ratios are compared by magnitude controllers 243 and 244 and 245, and the value is sent to a decoder 246 and an OR circuit 247 and 245.
48, 249 convert it into switch information, and latch circuit 25
0, 251, and 252 to control each switch by latting the correct switch information.
本実施例では時間率測定用にカウンタを使用したが、簡
単なコンピュータを便用しても時間率は測定可能であシ
、その時はマダニテーードコン・ぐレータデコーダ、ラ
ッチ等もコンピータを使用できることは明白である。又
、基地局でのスレショルドはスケルチで代用することも
可能である。In this example, a counter was used to measure the time rate, but the time rate can also be measured using a simple computer.In that case, the computer can also be used for the tick meter converter, regulator decoder, latch, etc. is obvious. Also, the threshold at the base station can be replaced with a squelch.
なお１本実施例では基地局からの電界情報を受信信号と
は別線で伝送しているが、電界情報と受信信号を合成し
て伝送することは′電界情報が２短信号なので可能であ
る。Note that in this embodiment, the electric field information from the base station is transmitted on a separate line from the received signal, but it is possible to combine and transmit the electric field information and the received signal because the electric field information is a two-short signal. .
以上説明したように９本発明は電界情報として１つの電
界判定値で判定した２値の信号を伝送し基地局選択装置
に於いて時間率を測定することによｐ、基地局は構成が
容易となり安価な基地局選択方式を構成することができ
る効果がある。As explained above, the present invention transmits a binary signal determined by one electric field judgment value as electric field information and measures the time rate in the base station selection device, thereby making the base station easy to configure. This has the effect of configuring an inexpensive base station selection method.
第１図は本発明の一実施例のブロック図、第２図は従来
の基地局選択方式の溝成図、第３図は本発明に使用する
基地局が送出する電界情報の一例を示す図、第４図は本
発明に使用する選択装置の時間率測定装置及び比較装置
の一例の構成図を示す。
較器、２１１，２２１，２３１；スイッチ、３ｏ０２固
定局。
第３図
□弓闇
□時間FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a diagram of a conventional base station selection method, and FIG. 3 is a diagram showing an example of electric field information transmitted by a base station used in the present invention. , FIG. 4 shows a configuration diagram of an example of a time rate measuring device and a comparing device of the selection device used in the present invention. Calibrator, 211, 221, 231; switch, 3o02 fixed station. Figure 3 □ Bow darkness □ Time
Claims (1)
信号の中の１つを中央局の基地局選択装置で選択する移
動通信システムに於いて、前記基地局は１つの電界判定
値で判定した２値の電界情報を中央局に送る電界情報送
出装置を、中央局は基地局から送られて来る前記２値の
電界情報の時間率を測定する時間率測定装置と、前記時
間率の比較装置を有することを特徴とする基地局選択方
式。1. In a mobile communication system in which radio waves from a mobile station are received by a plurality of distributed base stations and one of the signals is selected by a base station selection device of a central station, the base station has one electric field determination value. The central station includes an electric field information transmitting device that sends the binary electric field information determined by A base station selection method characterized by having a comparison device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61245585A JPS63100832A (en) | 1986-10-17 | 1986-10-17 | Base station selection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61245585A JPS63100832A (en) | 1986-10-17 | 1986-10-17 | Base station selection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63100832A true JPS63100832A (en) | 1988-05-02 |
Family
ID=17135916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61245585A Pending JPS63100832A (en) | 1986-10-17 | 1986-10-17 | Base station selection system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63100832A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05130020A (en) * | 1991-11-06 | 1993-05-25 | Nec Corp | Electric field strength measurement system in cellular mobile body telephone exchange system |
-
1986
- 1986-10-17 JP JP61245585A patent/JPS63100832A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05130020A (en) * | 1991-11-06 | 1993-05-25 | Nec Corp | Electric field strength measurement system in cellular mobile body telephone exchange system |
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