JPH0681087B2 - Transmission output control device - Google Patents
Transmission output control deviceInfo
- Publication number
- JPH0681087B2 JPH0681087B2 JP62187827A JP18782787A JPH0681087B2 JP H0681087 B2 JPH0681087 B2 JP H0681087B2 JP 62187827 A JP62187827 A JP 62187827A JP 18782787 A JP18782787 A JP 18782787A JP H0681087 B2 JPH0681087 B2 JP H0681087B2
- Authority
- JP
- Japan
- Prior art keywords
- transmission output
- electric field
- output control
- base station
- moving body
- 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.)
- Expired - Lifetime
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Mobile Radio Communication Systems (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、自動車電話等の双方向移動体通信システム
の基地局または移動体における送信出力制御装置に関す
るものである。Description: TECHNICAL FIELD The present invention relates to a transmission output control device in a base station or a mobile unit of a two-way mobile communication system such as a car telephone.
第３図は従来の送信出力制御装置を示すブロツク図であ
り、図において、１は受信機、２は受信電波の平均受信
電界を求める平均受信電界計算部、７は平均受信電界判
定部、５は平均受信電界判定部による判定結果に従つて
送信出力制御信号を出力する送信出力制御信号生成部、
６は送信機である。FIG. 3 is a block diagram showing a conventional transmission output control device. In the figure, 1 is a receiver, 2 is an average received electric field calculation unit for obtaining an average received electric field of received radio waves, 7 is an average received electric field determination unit, 5 Is a transmission output control signal generation unit that outputs a transmission output control signal according to the determination result by the average reception electric field determination unit,
6 is a transmitter.
次に動作について説明する。移動体よりの電波は受信機
１により受信され、ここで受信電界に比例した直流電圧
が出力され、平均受信電界計算部２に於てこの受信電界
の平均値が計算される。この平均値を基にして、平均受
信電界判定部７は移動体の送信出力を判定する。これに
より送信出力制御信号生成部５は移動体に対する送信制
御信号を生成する。この送信制御信号は送信機６を通じ
て移動体に対し送信される。これにより、移動体の送信
出力を制御する。Next, the operation will be described. The radio wave from the moving body is received by the receiver 1, where a DC voltage proportional to the received electric field is output, and the average received electric field calculation unit 2 calculates the average value of the received electric field. Based on this average value, the average reception electric field determination unit 7 determines the transmission output of the mobile body. As a result, the transmission output control signal generator 5 generates a transmission control signal for the moving body. This transmission control signal is transmitted to the mobile body through the transmitter 6. This controls the transmission output of the mobile body.
従来の送信出力制御装置は以上のように構成されている
ので、移動体の動作状態、つまり移動体が移動状態であ
るか静止状態であるかに関係なく、平均受信電界値のみ
により移動体の送信出力を制御している。通常移動体通
信においては、同一の通信品質を得るには移動時の法が
静止時より高い電界値を必要とするので、従来の移動体
送信出力制御装置では、移動体が移動時でも、一定値以
上の通信品質を得られるだけの送信出力を移動体に対し
て指令する必要があり、基地局の送信出力が大きくなつ
て、電力消費が過大になるなどの問題点があつた。Since the conventional transmission output control device is configured as described above, regardless of the operating state of the moving body, that is, regardless of whether the moving body is in the moving state or in the stationary state, It controls the transmission output. In normal mobile communication, the law at the time of moving requires a higher electric field value than that at rest in order to obtain the same communication quality. It is necessary to instruct the mobile unit to transmit power enough to obtain a communication quality equal to or higher than the value, and the transmission power of the base station becomes large, resulting in excessive power consumption.
この発明は、上記のような問題点を解消するためになさ
れたもので、移動体の動作状態を識別し、この識別結果
に従つて、移動体に対する送信出力を制御することがで
きる移動体送信出力制御装置を得ることを目的とする。The present invention has been made in order to solve the above-mentioned problems, and it is possible to identify the operating state of a mobile object and to control the transmission output to the mobile object according to the identification result. The purpose is to obtain an output control device.
この発明に係る送信出力制御装置は、フエーデイングピ
ツチ計算部により受信電界のフエーデイングピツチを計
算によつて求め、このフエーデイングピツチと上記受信
電界の平均値とから、送信出力判定部において、移動体
の移動時における基地局または移動体からの最適の送信
出力を判定させるようにしたものである。The transmission output control device according to the present invention obtains the fading pitch of the reception electric field by calculation by the fading pitch calculation unit, and based on this fading pitch and the average value of the reception electric field, the transmission output determination unit moves. The optimum transmission output from the base station or the moving body when the body moves is determined.
この発明における送信出力判定部は受信電界の平均値
と、この受信電界のフエーデイングピツチにもとづき、
移動体またはこれと送受信を行なう基地局が出力する送
信出力の最適値を判定し、この最適値の送信出力制御に
より、送信時における基地局または移動体での消費電力
を低減するように作用する。The transmission output determination unit in the present invention is based on the average value of the reception electric field and the fading pitch of the reception electric field,
The optimum value of the transmission power output by the mobile unit or the base station transmitting / receiving with the mobile unit is determined, and the transmission power control of this optimum value acts to reduce the power consumption of the base station or the mobile unit at the time of transmission. .
以下、この発明の一実施例を図について説明する。第１
図において、１は受信機、２は受信電界の平均値を計算
する平均受信電界計算部、３は受信電界のフエーデイン
グピツチ計算部、４は平均受信電界とフエーデイングピ
ツチとにより移動体の最適な送信出力を判定する送信出
力判定部、５は送信出力制御信号生成部、６は送信機で
ある。An embodiment of the present invention will be described below with reference to the drawings. First
In the figure, 1 is a receiver, 2 is an average received electric field calculation unit for calculating an average value of the received electric field, 3 is a receiving electric field fading pitch calculation unit, and 4 is an optimal moving body according to the average received electric field and the fading pitch. 5 is a transmission output control signal generation unit, and 6 is a transmitter.
次に動作について説明する。移動体よりの電波は受信機
１により受信され、ここで受信電界に比例した直流電圧
が出力され、平均受信電界計算部２において、この直流
電圧レベルの平均値が計算される。また、受信機１の出
力にもとづいてフエーデイングピツチ計算部３において
フエーデイングピツチを求め、これにより通信相手であ
る移動体の動作状態を検出する。フエーデイングピツチ
はV/λとなる（Ｖ＝移動体の秒速、λ＝波長）。そこ
で、上記直流電圧レベルの平均値とフエーデイングピツ
チをもとにして、送信出力判定部４は上記移動体の最適
な送信出力を判定する。つまり、移動体よりの受信電界
が同一であつても、移動体が移動状態であれば、移動体
の送信出力を静止状態より増大すべきを判定し、この判
定結果にもとづいて送信出力制御信号生成部５を制御す
る。また、低速の移動状態時は（フエーデイングピツチ
が非常に遅い時）、平均受信電界の変化に追従して移動
体の最適な送信出力を判定する。上記各判定結果をもと
にして、送信出力制御信号生成部５は移動体に対する送
信制御信号を生成し、この送信出力制御信号は送信機６
を通じて移動体に対し送信される。この結果、移動体側
の送信機の送信出力が自動調整され、基地局側における
受信感度を最適に、しかも省電力にて送受信可能にす
る。Next, the operation will be described. Radio waves from the moving body are received by the receiver 1, where a DC voltage proportional to the received electric field is output, and the average received electric field calculation unit 2 calculates the average value of this DC voltage level. Further, based on the output of the receiver 1, the fading pitch calculation section 3 obtains the fading pitch, thereby detecting the operation state of the mobile body as the communication partner. The fading pitch is V / λ (V = second of moving body, λ = wavelength). Therefore, the transmission output determination unit 4 determines the optimum transmission output of the moving body based on the average value of the DC voltage level and the fading pitch. That is, even if the received electric field from the moving body is the same, if the moving body is in the moving state, it is determined that the transmission output of the moving body should be increased from the stationary state, and the transmission output control signal is determined based on this determination result. The generation unit 5 is controlled. Further, when the vehicle is moving at a low speed (when the fading pitch is very slow), the optimum transmission output of the moving body is determined by following the change in the average received electric field. The transmission output control signal generation unit 5 generates a transmission control signal for the moving body based on the above determination results, and the transmission output control signal is transmitted to the transmitter 6.
Is transmitted to the mobile body through. As a result, the transmission output of the transmitter on the mobile unit side is automatically adjusted, and the reception sensitivity on the base station side is optimized, and transmission / reception can be performed with power saving.
なお、上記実施例では移動体の送信出力制御を基地局に
おいて行なつた実施例を示したが、移動体においても、
基地局よりの受信電界に従つた自律的な送信出力の制御
が可能である。この場合のブロツク図を第２図に示す。
図において、11は移動体の受信機、12は受信電界の平均
値を計算する平均受信電界計算部、13は基地局側からの
受信電界のフエーデイングピツチ計算部、14は平均受信
電界とフエーデイングピツチとにもとづき移動体の最適
な送信出力を判定する判定部、15は送信出力制御信号生
成部、16は移動体送信機である。そして、かかる構成に
なる移動体側の送信出力制御装置にあつても、移動体自
身が基地局に対する送信出力の制御を実施する。In the above embodiment, the transmission output control of the mobile unit is shown in the base station, but in the mobile unit,
It is possible to autonomously control the transmission output according to the electric field received from the base station. A block diagram in this case is shown in FIG.
In the figure, 11 is a mobile receiver, 12 is an average received electric field calculation unit for calculating the average value of the received electric field, 13 is a fading pitch calculation unit for the received electric field from the base station side, and 14 is the average received electric field and the fading. A reference numeral 15 is a transmission output control signal generation unit, and 16 is a mobile transmitter, which determines the optimum transmission output of the mobile unit based on the deing pitch. Then, even in the transmission output control device on the mobile unit side having such a configuration, the mobile unit itself controls the transmission output to the base station.
また、上記２つの実施例では受信電界より求められるフ
エーデイングピツチにもとづいて移動体の送信出力を制
御する場合について説明したが、平均電界の変化係数と
フエーデイングピツチより自動車電話システムにおいて
用いられている通話中チヤンネル切り替え発生時刻の予
測も可能である。Further, in the above two embodiments, the case where the transmission output of the moving body is controlled on the basis of the fading pitch obtained from the received electric field has been described, but it is used in the car telephone system from the variation coefficient of the average electric field and the fading pitch. It is also possible to predict the time at which a channel switch occurs during a call.
以上のように、この発明によれば受信電界の平均値とフ
エーデイングピツチとにもとづいて、移動体または基地
局の最適な送信出力制御を行うため、良好な通話品質を
保ちつつ移動体の送信時消費電力の低減が図れるものが
得られる効果がある。As described above, according to the present invention, the optimum transmission output control of the mobile body or the base station is performed based on the average value of the received electric field and the fading pitch, so that the transmission of the mobile body is maintained while maintaining good communication quality. There is an effect that what can reduce the power consumption per hour is obtained.
第１図はこの発明の一実施例による基地局側における送
信出力制御装置のブロツク図、第２図はこの発明の他の
実施例を示す移動体側における送信出力制御装置のブロ
ツク図、第３図は従来の基地局側における送信出力制御
装置のブロツク図である。 １は受信機、３はフエーデイングピツチ計算部、４は送
信出力判定部、６は送信機。 なお、図中、同一符号は同一、又は相当部分を示す。FIG. 1 is a block diagram of a transmission output control device on a base station side according to an embodiment of the present invention, and FIG. 2 is a block diagram of a transmission output control device on a mobile body side according to another embodiment of the present invention. FIG. 4 is a block diagram of a conventional transmission output control device on the base station side. 1 is a receiver, 3 is a fading pitch calculation unit, 4 is a transmission output determination unit, and 6 is a transmitter. In the drawings, the same reference numerals indicate the same or corresponding parts.
Claims (1)
波を受信機で受信し、受信した電波の受信電界の大きさ
にもとづいて上記基地局または移動体からの送信出力を
判定し、この判定結果に応じた最適の送信出力を、送信
機から上記基地局または移動体に対して送信する送信出
力制御装置において、上記受信電界のフエーデイングピ
ツチを求めるフエーデイングピツチ計算部と、このフエ
ーデイングピツチと上記受信電界の平均値とから上記移
動体の移動時における上記基地局または移動体からの最
適の送信出力を判定する送信出力判定部とを設けたこと
を特徴とする送信出力制御装置。1. A radio wave from one of a base station and a mobile unit to the other is received by a receiver, and a transmission output from the base station or the mobile unit is determined based on a magnitude of a received electric field of the received radio wave, In a transmission output control device for transmitting an optimum transmission output corresponding to this determination result from the transmitter to the base station or the moving body, a fading pitch calculator for obtaining a fading pitch of the received electric field, and A transmission output control device provided with a transmission output determination unit for determining an optimum transmission output from the base station or the moving body when the moving body moves based on a deing pitch and an average value of the reception electric field. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62187827A JPH0681087B2 (en) | 1987-07-29 | 1987-07-29 | Transmission output control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62187827A JPH0681087B2 (en) | 1987-07-29 | 1987-07-29 | Transmission output control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6432727A JPS6432727A (en) | 1989-02-02 |
| JPH0681087B2 true JPH0681087B2 (en) | 1994-10-12 |
Family
ID=16212927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62187827A Expired - Lifetime JPH0681087B2 (en) | 1987-07-29 | 1987-07-29 | Transmission output control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0681087B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2995065B2 (en) * | 1989-07-03 | 1999-12-27 | 日本電信電話株式会社 | Transmission power control method in mobile communication system |
| JPH03104329A (en) * | 1989-09-19 | 1991-05-01 | Nippon Telegr & Teleph Corp <Ntt> | Mobile communication channel assignment control system |
| JP2991862B2 (en) * | 1992-06-29 | 1999-12-20 | 三菱電機株式会社 | Transmission power control device and system in mobile communication |
| EP1215926B1 (en) | 1999-09-22 | 2006-06-21 | Fujitsu Limited | Transmission power controller |
| JP2009239977A (en) * | 2009-07-21 | 2009-10-15 | Fujitsu Ltd | Communication control device and method based on moving speed |
-
1987
- 1987-07-29 JP JP62187827A patent/JPH0681087B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6432727A (en) | 1989-02-02 |
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