JP3099526B2 - Wireless telephone equipment - Google Patents
Wireless telephone equipmentInfo
- Publication number
- JP3099526B2 JP3099526B2 JP04174018A JP17401892A JP3099526B2 JP 3099526 B2 JP3099526 B2 JP 3099526B2 JP 04174018 A JP04174018 A JP 04174018A JP 17401892 A JP17401892 A JP 17401892A JP 3099526 B2 JP3099526 B2 JP 3099526B2
- Authority
- JP
- Japan
- Prior art keywords
- base station
- field strength
- electric field
- transmission power
- control 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.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Mobile Radio Communication Systems (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、家庭用コードレス電話
機・移動電話・自動車電話などの固定基地局と無線電話
機から構成される無線電話装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio telephone apparatus comprising a fixed base station such as a cordless telephone for home use, a mobile telephone, a car telephone and the like and a radio telephone.
【０００２】[0002]
【従来の技術】無線電話装置は、基地局と無線電話機の
組み合わせによって構成されている。発呼情報・着呼情
報・およびダイヤル情報など無線電話機の動作に関する
制御情報は、通話のための音声情報とは別に基地局と無
線電話機との間で交換されている。前記制御情報および
音声情報は、使用する周波数の電波に変調されて送信さ
れ、相手側の受信部で復調されて取り出される。送信す
る電力が大きいほど伝搬距離は長くなり、また基地局と
無線電話機の距離を一定と考えると送信する電力が大き
いほど受信電界強度のレベルが上がるため明瞭度が向上
する。従って、固定基地局、および無線電話機は、法で
許される範囲内で最大到達距離においても十分に通話が
可能な送信電力で運用される。2. Description of the Related Art A radio telephone device is composed of a combination of a base station and a radio telephone. Control information relating to the operation of the wireless telephone, such as calling information, incoming call information, and dial information, is exchanged between the base station and the wireless telephone separately from voice information for a call. The control information and the voice information are modulated into radio waves of the frequency to be used and transmitted, and are demodulated and extracted by a receiving unit on the partner side. The higher the transmission power, the longer the propagation distance. If the distance between the base station and the radiotelephone is assumed to be constant, the higher the transmission power, the higher the level of the received electric field strength. Therefore, the fixed base station and the radiotelephone are operated with a transmission power that allows sufficient communication even at the maximum reach within the range permitted by law.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら上記した
従来の無線電話装置では、常時最大到達距離で通話可能
な送信電力で運用されるため、送信時には相当の電力を
消費しており、固定基地局とは異なり商用電源の利用で
きない移動可能な無線電話機においては、限られた容量
の電池の消耗を早めることとなる。近年、回路の集積化
や実装技術の進歩によって移動可能な無線電話機の小型
軽量化には目ざましいものがあるが、電池の小型軽量化
が困難なため電池が無線電話機に占めるスペースの割合
が大きくなってきている。However, in the above-mentioned conventional radio telephone device, since it is always operated with the transmission power capable of communicating with the maximum reach distance, a considerable amount of power is consumed at the time of transmission. On the other hand, in a mobile wireless telephone which cannot use a commercial power supply, the consumption of a limited capacity battery is expedited. In recent years, there has been a remarkable reduction in the size and weight of mobile radiotelephones due to the advancement of circuit integration and packaging technology. Is coming.
【０００４】従って、電池のためのスペースをいかに少
なくするかが解決すべき課題となっているが、小型の電
池では容量が小さいため使用時間が短く、頻繁に充電を
行なう必要があるためサービス性が悪いといった問題点
があり、逆に長時間使用するためには大容量の電池を収
容する必要があるため大型になり携帯性が悪くなるとい
った問題点を有していた。[0004] Therefore, there is a problem to be solved how to reduce the space for the battery. However, a small battery has a small capacity and thus has a short usage time, and requires frequent charging, so that serviceability is high. On the other hand, there is a problem that a large-capacity battery must be accommodated in order to use the battery for a long time.
【０００５】本発明は上記問題点を解決し、固定基地局
と無線電話機との距離や電波伝搬状態に応じて無線電話
機の送信電力を調節し、電池の消耗を少なくすることが
可能な無線電話装置を提供することを課題としている。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and adjusts the transmission power of the radio telephone according to the distance between the fixed base station and the radio telephone and the radio wave propagation state, thereby reducing battery consumption. It is an object to provide a device.
【０００６】[0006]
【課題を解決するための手段】本発明は以上の課題を解
決するため、固定基地局に無線電話機からの基地局制御
信号を復調した信号レベルから受信電界強度の大きさを
検出する基地局受信電界強度検出手段と、検出結果を無
線電話機に返送する手段と、無線電話機に固定基地局か
らの電話機制御信号を復調して返送された電界強度の大
きさを検出する電界強度検出手段と、周期的に出力を発
生する周期起動手段と、電界強度の大きさ・電界強度の
時間的変化の度合い・送信出力の調整量に関する知識を
記憶しておく知識ベースと、前記電界強度検出手段と前
記周期起動手段の出力を受け、前記知識ベースを基に固
定基地局で受信された電界強度の大きさとその時間変化
量から無線電話機と固定基地局との距離や電波伝搬状態
の変化を判定し、判定結果に応じて最適な送信電力の調
整量を決定する送信電力調整量判別手段と、前記送信電
力調整量判別手段の出力から送信部の送信電力の大きさ
を制御する送信電力制御手段とを備えた。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a base station receiving method for detecting the magnitude of a received electric field strength from a signal level obtained by demodulating a base station control signal from a radio telephone to a fixed base station. Electric field strength detecting means, means for returning a detection result to the wireless telephone, electric field strength detecting means for demodulating a telephone control signal from the fixed base station to the wireless telephone and detecting the magnitude of the returned electric field strength, Periodic starting means for generating an output, a knowledge base for storing knowledge about the magnitude of the electric field strength, the degree of the temporal change of the electric field strength, and the amount of adjustment of the transmission output; and the electric field strength detecting means and the period. Upon receiving the output of the activating means, determine the change in the distance or radio wave propagation state between the radio telephone and the fixed base station from the magnitude of the electric field strength received by the fixed base station and the amount of time change thereof based on the knowledge base, A transmission power adjustment amount determining unit that determines an optimal transmission power adjustment amount according to the fixed result, and a transmission power control unit that controls the magnitude of the transmission power of the transmission unit from the output of the transmission power adjustment amount determination unit. Equipped.
【０００７】[0007]
【作用】以上のように構成したことにより、従来常時最
大到達距離で明瞭に通話可能な送信電力に固定して運用
していた無線電話機を、基地局受信強度検出手段によっ
て受信電界強度を検出し、固定基地局から受信電界強度
を返送してもらい、知識ベースと送信電力調整量判別手
段によって固定基地局との距離や電波伝搬状態の変化に
応じた最適な送信電力に自動的に調節することで、通話
品質を落とすこと無く消費電力を削減でき、電池容量を
少なくして無線電話機を小型軽量化することを可能とす
る。あるいは電池容量をそのままにして利用可能時間を
延長することが可能となった。With the above arrangement, the base station reception strength detection means detects the reception electric field strength of the radio telephone which has conventionally been operated at a fixed transmission power capable of clearly communicating at the maximum reach distance. The fixed base station returns the received electric field strength, and the knowledge base and the transmission power adjustment amount discriminating means automatically adjust the transmission power to an optimum value according to the distance to the fixed base station and the change in the radio wave propagation state. Thus, power consumption can be reduced without deteriorating the call quality, and the battery capacity can be reduced to make the wireless telephone smaller and lighter. Alternatively, it is possible to extend the available time while keeping the battery capacity unchanged.
【０００８】[0008]
【実施例】以下、本発明の一実施例における無線電話装
置について説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A radio telephone according to an embodiment of the present invention will be described below.
【０００９】図１は実施例の無線電話装置を構成する固
定基地局Ａと無線電話機Ｂのブロック図、図２は無線電
話機Ｂの送信電力の調整量を周期起動によって求める送
信電力調整量判別手段の処理を示すフローチャート、図
３は無線電話機Ｂの知識ベースが記憶している電界強度
の大きさ・および時間変化率・送信電力の調整量につい
てファジイ集合で表現するために使用したメンバシップ
関数を示す説明図、図４は送信電力調整量判別手段が採
用した推論ルールをマトリクスで表現した説明図であ
り、図５は送信電力調整量判別手段におけるある時間に
おける固定基地局から返送される電界強度の大きさが
８、電界強度の時間変化率が−２０％である場合に必要
な送信電力の調整量を推論する過程と推論結果を示す説
明図、図６は送信電力調整量判別手段におけるある時間
における固定基地局から返送される電界強度の大きさが
３、電界強度の時間変化率が＋５％である場合に必要な
送信電力の調整量を推論する過程と推論結果を示す説明
図である。FIG. 1 is a block diagram of a fixed base station A and a radio telephone B constituting the radio telephone apparatus of the embodiment, and FIG. 2 is a transmission power adjustment amount discriminating means for determining the transmission power adjustment amount of the radio telephone B by periodic activation. FIG. 3 shows the membership function used for expressing the magnitude of the electric field strength, the rate of change in time, and the amount of adjustment of the transmission power stored in the knowledge base of the radiotelephone B in a fuzzy set. FIG. 4 is an explanatory diagram in which inference rules adopted by the transmission power adjustment amount discriminating means are expressed in a matrix. FIG. 5 is an electric field intensity returned from the fixed base station at a certain time in the transmission power adjustment amount discriminating means. FIG. 6 is an explanatory diagram showing a process of inferring a necessary adjustment amount of transmission power and an inference result when the magnitude of is 8 and the time change rate of the electric field strength is -20%. A process and an inference result of inferring an adjustment amount of transmission power required when the magnitude of the electric field strength returned from the fixed base station at a certain time is 3 and the time rate of change of the electric field strength is + 5% in the adjustment amount determining means. FIG.
【００１０】図１の１から６は、無線電話装置の固定基
地局Ａにおいて無線電話機Ｂから受信する制御信号の電
界強度を返送する手段を構成するブロックであり、７か
ら１５は、無線電話装置の無線電話機Ｂにおいて最適な
送信電力に調整する手段を構成するブロックである。以
下、各ブロックについて説明する。1 to 6 are blocks constituting means for returning the electric field strength of the control signal received from the radio telephone B at the fixed base station A of the radio telephone, and 7 to 15 are the radio telephones. FIG. 4 is a block diagram illustrating a unit that adjusts the transmission power to an optimum value in the wireless telephone B of FIG. Hereinafter, each block will be described.
【００１１】１は基地局制御信号復調手段であり、固定
基地局Ａの受信部５より得られる中間周波数に変調され
た信号から目的とする基地局制御信号を取り出すための
復調手段である。２は基地局制御手段であり、前記基地
局制御信号復調手段１で得られた基地局制御信号を解釈
して、無線電話機からの発呼やダイヤル信号を受け付け
て基地局の制御を行なったり、周期的に無線電話機に対
して応答を返すよう要求を行なう手段である。３は基地
局受信電界強度検出手段であり、前記基地局制御信号復
調手段１で得られる基地局制御信号を運ぶキャリアの信
号レベルの大きさから受信電界強度を検出する手段であ
る。Reference numeral 1 denotes a base station control signal demodulation means for extracting a target base station control signal from a signal modulated to an intermediate frequency obtained from the receiving unit 5 of the fixed base station A. Reference numeral 2 denotes a base station control unit which interprets the base station control signal obtained by the base station control signal demodulation unit 1 and receives a call from a wireless telephone or receives a dial signal to control the base station. This is a means for periodically requesting the wireless telephone to return a response. Reference numeral 3 denotes a base station reception electric field strength detection means for detecting the reception electric field strength from the signal level of the carrier carrying the base station control signal obtained by the base station control signal demodulation means 1.
【００１２】４は基地局制御信号変調手段であり、前記
基地局制御手段２で発生した着呼信号などの無線電話機
制御情報と、前記基地局受信電界強度検出手段３で検出
した電界強度情報とを無線電話機に伝送するために情報
符号を電波に変調するための手段であり、変調された信
号は固定基地局の送信部６へ送られて無線電話機Ｂに対
して送信される。５は電波を受信する受信部、６は電波
を送信する送信部である。Reference numeral 4 denotes base station control signal modulating means, which controls radio telephone control information such as an incoming call signal generated by the base station control means 2 and electric field strength information detected by the base station received electric field strength detecting means 3. Is a means for modulating an information code into a radio wave in order to transmit the signal to the radio telephone. The modulated signal is transmitted to the transmission unit 6 of the fixed base station and transmitted to the radio telephone B. Reference numeral 5 denotes a receiving unit for receiving radio waves, and reference numeral 6 denotes a transmitting unit for transmitting radio waves.
【００１３】７は無線電話機Ｂの電話機制御信号復調手
段であり、無線電話機の受信部より得られる中間周波数
の制御情報が変調された信号から目的とする制御情報符
号を取り出すための復調手段である。８は電話機制御手
段であり、前記電話機制御信号復調手段７で得られた制
御情報符号のうち電話機制御情報を解釈して、着信表示
のためにベルを鳴動させるなど無線電話機Ｂの制御を行
なう手段である。Reference numeral 7 denotes a telephone control signal demodulation means of the radio telephone B, which is a demodulation means for extracting a target control information code from a signal obtained by modulating the intermediate frequency control information obtained from the reception unit of the radio telephone. . Reference numeral 8 denotes telephone control means for interpreting telephone control information among the control information codes obtained by the telephone control signal demodulation means 7 and controlling the radio telephone B such as ringing a bell for displaying an incoming call. It is.
【００１４】９は電界強度検出手段であり、前記電話機
制御信号復調手段７で得られた制御情報符号のうち電界
強度情報を解釈して、固定基地局Ａにどれくらいの信号
レベルで受信されたかを検出する手段である。１０は周
期起動手段であり、一定周期毎にインターバル信号が必
要な送信電力調整量判別手段１２に対して起動を与える
手段である。１１は知識ベースであり、０から１までの
グレードを表現するメンバシップ関数を利用して、監視
する値や制御を加える対象に関する定性的な知識を記憶
しておく部分である。Reference numeral 9 denotes an electric field strength detecting means, which interprets the electric field strength information among the control information codes obtained by the telephone control signal demodulating means 7 and determines at what signal level the fixed base station A has received. It is a means to detect. Reference numeral 10 denotes a cycle starting unit, which gives a start to the transmission power adjustment amount discriminating unit 12 that requires an interval signal at regular intervals. Reference numeral 11 denotes a knowledge base, which stores a qualitative knowledge about a value to be monitored and an object to be controlled by using a membership function expressing a grade from 0 to 1.
【００１５】１２は送信電力調整量判別手段であり、前
記周期起動手段１０より起動され、前記電界強度検出手
段９の出力を入力とし、固定基地局Ａより返送された電
界強度の大きさと、前回の周期で入力した電界強度の大
きさと今回の電界強度の大きさから算出した電界強度の
時間変化率より、前記知識ベース１１のデータを基にフ
ァジイ制御によって必要な送信電力の調整量を推論する
手段である。Reference numeral 12 denotes a transmission power adjustment amount discriminating means, which is started by the period starting means 10 and receives the output of the electric field strength detecting means 9 as an input, the magnitude of the electric field strength returned from the fixed base station A, From the magnitude of the electric field strength input in the cycle of the above and the time change rate of the electric field strength calculated from the magnitude of the current electric field strength, a necessary transmission power adjustment amount is inferred by fuzzy control based on the data of the knowledge base 11. Means.
【００１６】１３は送信電力制御手段であり、前記送信
電力調整量判別手段１２で得られた出力より、送信部１
５に対して指定する送信電力となるよう制御する手段で
あり、具体的には電力損失を少なくするため、電力増幅
を行なう前の信号レベルをアッテネータによって調節す
る手段がとられる。Reference numeral 13 denotes a transmission power control unit.
5 is a means for controlling the transmission power to be designated to 5, specifically, means for adjusting the signal level before power amplification is performed by an attenuator in order to reduce power loss.
【００１７】図４の固定基地局Ａから返送される電界強
度の大きさ、および時間変化率から必要な送信電力の調
整量を求める推論ルールをマトリクスで表現した表につ
いて説明する。本実施例によって求められる送信電力の
調整量はマトリクスの中のＲ１〜Ｒ９で表わされる定性
的に表現されたルールによって推論される。以下にＲ１
〜Ｒ９で表わされるファジイ推論ルールの定義を示す。A table in which inference rules for obtaining the required transmission power adjustment amount from the magnitude of the electric field strength returned from the fixed base station A and the time rate of change shown in FIG. 4 will be described in the form of a matrix. The adjustment amount of the transmission power obtained according to the present embodiment is inferred by the qualitatively expressed rules represented by R1 to R9 in the matrix. Below R1
The definition of the fuzzy inference rule represented by R9 is shown below.
【００１８】Ｒ１：返送された電界強度の大きさが弱く
て、時間変化率が負に大きければ、送信電力をかなり大
きくするように調整する。R1: If the magnitude of the returned electric field is weak and the time rate of change is negative, the transmission power is adjusted to be considerably large.
【００１９】Ｒ２：返送された電界強度の大きさが弱く
て、時間変化率があまり変化しなければ、送信電力を少
し大きくするように調整する。R2: If the magnitude of the returned electric field is weak and the time rate of change does not change much, the transmission power is adjusted to be slightly increased.
【００２０】Ｒ３：返送された電界強度の大きさが弱く
て、時間変化率が正に大きければ、送信電力を中くらい
にするように調整する。R3: If the magnitude of the returned electric field is weak and the time rate of change is positive, the transmission power is adjusted to be medium.
【００２１】Ｒ４：返送された電界強度の大きさが中く
らいで、時間変化率が負に大きければ、送信電力を少し
大きくするように調整する。R4: If the magnitude of the returned electric field is medium and the rate of change over time is negative, the transmission power is adjusted to be slightly increased.
【００２２】Ｒ５：返送された電界強度の大きさが中く
らいで、時間変化率があまり変化しなければ、送信電力
を中くらいにするように調整する。R5: If the magnitude of the returned electric field is medium and the time rate of change does not change much, the transmission power is adjusted to be medium.
【００２３】Ｒ６：返送された電界強度の大きさが中く
らいで、時間変化率が正に大きければ、送信電力を少し
小さくするように調整する。R6: If the magnitude of the returned electric field is medium and the time rate of change is positive, the transmission power is adjusted to be slightly reduced.
【００２４】Ｒ７：返送された電界強度の大きさが強く
て、時間変化率が負に大きければ、送信電力を中くらい
にするように調整する。R7: If the magnitude of the returned electric field is strong and the rate of change over time is negative, the transmission power is adjusted to be medium.
【００２５】Ｒ８：返送された電界強度の大きさが強く
て、時間変化率があまり変化しなければ、送信電力を少
し小さくするように調整する。R8: If the magnitude of the returned electric field is strong and the time rate of change does not change much, the transmission power is adjusted to be slightly reduced.
【００２６】Ｒ９：返送された電界強度の大きさが強く
て、時間変化率が正に大きければ、送信電力をかなり小
さくするように調整する。R9: If the magnitude of the returned electric field is strong and the time rate of change is positive, the transmission power is adjusted to be considerably reduced.
【００２７】以下、本発明における無線電話装置を構成
する無線電話機Ｂの動作について、ｍａｘ−ｍｉｎ合成
重心法を用いたファジイ推論による送信電力の調整量の
決定手法を図２のフローチャートに従って説明する。Hereinafter, the operation of the radio telephone B constituting the radio telephone apparatus according to the present invention will be described with reference to the flowchart of FIG. 2 for a method of determining the amount of transmission power adjustment by fuzzy inference using the max-min composite centroid method.
【００２８】前記周期起動手段１０より起動された前記
送信電力調整量判別手段１２は、前記電界強度検出手段
９より現在の返送された電界強度の大きさを読みだし
（ステップ２１）、前回起動時の電界強度の大きさと比
較して電界強度の時間変化率を計算する（ステップ２
２）。次に先のルールに従って推論を行なうため、ルー
プ回数をルール数（９）にセットし（ステップ２３）、
以下のループ処理を行なう。The transmission power adjustment amount discriminating means 12 started by the period starting means 10 reads the current magnitude of the returned electric field strength from the electric field strength detecting means 9 (step 21), The time change rate of the electric field strength is calculated by comparing with the magnitude of the electric field strength of Step 2 (Step 2).
2). Next, in order to perform inference according to the above rule, the number of loops is set to the number of rules (9) (step 23).
The following loop processing is performed.
【００２９】まず、ルールの第一の前件部に対して今回
得られた電界強度の大きさのメンバシップ関数へのマッ
チング度（ＭＡ）と、ルールの第二の前件部に対して今
回得られた電界強度の時間変化率のメンバシップ関数へ
のマッチング度（ＭＢ）を求める（ステップ２４，２
５）。次にＭＡとＭＢを比較して小さい方の値をルール
後件部に対して適用して、どれくらい当てはまるかをメ
ンバシップ関数により推論する（ステップ２６）。全て
のルールに対して推論を終了したら（ステップ２７）、
推論結果を合成して（ステップ２８）合成結果の重心を
計算し、必要とする送信電力の調整量に関する確定値を
得て（ステップ２９）、前記送信電力制御手段１１に出
力し、固定基地局より返送される電界強度の大きさや時
間変化率の変化にリアルタイムに応答して送信電力の調
節を行なう。First, the matching degree (MA) of the magnitude of the electric field strength obtained this time with respect to the first antecedent part of the rule to the membership function, and The degree of matching (MB) of the obtained rate of change of the electric field strength with time to the membership function is determined (steps 24 and 2).
5). Next, by comparing MA and MB, the smaller value is applied to the rule consequent part, and how much the rule applies is inferred by the membership function (step 26). When the inference has been completed for all rules (step 27),
The inference result is combined (step 28), the center of gravity of the combined result is calculated, a definite value relating to the required amount of transmission power adjustment is obtained (step 29), and output to the transmission power control means 11 to obtain the fixed base station. The transmission power is adjusted in real time in response to the magnitude of the returned electric field strength and the change in the time rate of change.
【００３０】次に、図３、図５、図６を用いて、上記推
論アルゴリズムの具体的応用例について説明する。Next, a specific application example of the above inference algorithm will be described with reference to FIGS. 3, 5, and 6. FIG.
【００３１】図３は固定基地局より返送される電界強度
の大きさ・電界強度の時間変化・送信電力の調整量をフ
ァジイ量で表現するメンバシップ関数であり、縦軸はそ
れぞれ０から１までのグレード値をとり、横軸はそれぞ
れ電界強度の大きさを０から１０までのレベルで表した
値・電界強度の時間変化率を百分率で表わした値・送信
電力の調整量を現状を０として±１００％の範囲で表わ
した値をとる。この図は電界強度の大きさが弱い、強い
といった定性的な表現をグレードにより定量値に変換す
るためのものである。FIG. 3 is a membership function expressing the magnitude of the electric field strength returned over time from the fixed base station, the change over time in the electric field strength, and the amount of adjustment of the transmission power by fuzzy amounts. The horizontal axis represents the value of the magnitude of the electric field strength on a level from 0 to 10, the value of the time change of the electric field strength as a percentage, and the adjustment amount of the transmission power as 0. Take a value expressed in the range of ± 100%. This figure is for converting a qualitative expression such as a weak or strong electric field strength into a quantitative value by grade.
【００３２】無線電話機の送信電力の初期値は最大電力
から始め、ある時間経過したときの周期起動時における
電界強度の大きさが８、電界強度の時間変化率が−２０
％であったと仮定すると、電界強度の大きさはメンバシ
ップ関数の「強い」に対して０．７５のグレードでマッ
チングし、電界強度の時間変化率はメンバシップ関数の
「負に大きい」に対して０．２５、「変わらない」に対
して０．６７のグレードでマッチングするため、有効な
ルールはＲ７、Ｒ８となり、各ルールの推論結果と推論
結果の合成は図５に示すように現われる。前記アルゴリ
ズムに従って合成結果の重心をとると、送信電力の調整
量の確定値は−３２．６％となるため、現在の送信電力
の（１−０．３２６）倍を新たな送信電力として設定す
る。The initial value of the transmission power of the radiotelephone starts from the maximum power, and when a certain time has elapsed, the magnitude of the electric field strength at the time of periodic startup is 8, and the time change rate of the electric field strength is -20.
%, The magnitude of the electric field strength matches the strength of the membership function with a grade of 0.75, and the rate of change over time of the electric field strength with respect to the magnitude of the membership function is “negatively large”. Therefore, the effective rules are R7 and R8, and the inference result of each rule and the synthesis of the inference result appear as shown in FIG. When the center of gravity of the synthesis result is taken according to the above algorithm, the final value of the adjustment amount of the transmission power is −32.6%, so (1−0.326) times the current transmission power is set as the new transmission power. .
【００３３】また、ある周期起動時における受信電界強
度の大きさが３、受信電界強度の時間変化率が＋５％で
あったと仮定すると、受信電界強度の大きさはメンバシ
ップ関数の「弱い」に対して０．５、「中くらい」に対
して０．３３のグレードでマッチングし、受信電界強度
の時間変化率はメンバシップ関数の「変わらない」に対
して０．９２、「正に大きい」に対して０．０６のグレ
ードでマッチングするため、有効なルールはＲ２、Ｒ
３、Ｒ５、Ｒ６となり、各ルールの推論結果と推論結果
の合成は図６に示すように現われ、必要とする送信電力
の確定値は前記アルゴリズムに従って合成結果の重心を
とると、２４．４％となるため、現在の送信電力の（１
＋０．２４４）倍を新たな送信電力として設定する。Further, assuming that the magnitude of the received electric field strength at the time of starting a certain cycle is 3, and the time change rate of the received electric field strength is + 5%, the magnitude of the received electric field strength is reduced to "weak" of the membership function. On the other hand, matching with 0.5 and "medium" with a grade of 0.33, and the time change rate of the received electric field strength is 0.92 with respect to "unchanged" of the membership function, and "positively large". Are valid rules for R2 and R
3, R5, and R6, the inference result of each rule and the synthesis of the inference result appear as shown in FIG. 6, and the definite value of the required transmission power is 24.4% when the center of gravity of the synthesis result is calculated according to the algorithm. Therefore, (1) of the current transmission power
+0.244) times is set as a new transmission power.
【００３４】[0034]
【発明の効果】以上の実施例から明らかなように、本発
明によれば今まで常時最大到達距離で明瞭に通話可能な
送信電力に固定して運用していた無線電話機を、固定基
地局から受信電界強度を返送してもらい、固定基地局と
の距離や電波伝搬状態の変化に応じてリアルタイムに最
適な送信電力をメンバシップ関数による知識ベースを基
に定性的なルールに従ってファジイ推論によって求める
手段によって自動的に調節することで、通話品質を落と
すこと無く消費電力を削減することを可能とした。As is clear from the above embodiments, according to the present invention, a radiotelephone which has always been operated at a fixed transmission power capable of clearly communicating with the maximum reachable distance can be used from a fixed base station. Means to have the received electric field strength returned and to determine the optimal transmission power in real time according to the change in the distance from the fixed base station and the radio wave propagation state by fuzzy inference according to the qualitative rule based on the knowledge base by the membership function By automatically adjusting the power consumption, power consumption can be reduced without deteriorating call quality.
【００３５】従って、本発明によれば低消費電力のメリ
ットを生かして、少ない容量の電池を使用した小型軽量
の無線電話機や、電池容量を大きくすること無しに利用
可能時間を向上させた無線電話機が使用できる無線電話
装置を提供できる。Therefore, according to the present invention, a small and lightweight wireless telephone using a battery with a small capacity or a wireless telephone with an increased available time without increasing the battery capacity, taking advantage of the low power consumption. Can be provided.
【図１】本発明の一実施例の無線電話装置を構成する固
定基地局と無線電話機のブロック図FIG. 1 is a block diagram of a fixed base station and a wireless telephone constituting a wireless telephone device according to an embodiment of the present invention;
【図２】本発明の一実施例の無線電話装置の送信電力調
整量判別手段の処理を示すフローチャートFIG. 2 is a flowchart showing processing of a transmission power adjustment amount determining unit of the wireless telephone device according to one embodiment of the present invention;
【図３】本発明の一実施例の無線電話機の知識ベースが
記憶している受信電界強度の大きさ・受信電界強度の時
間変化率・送信電力の調整量についてファジイ集合で表
現するために使用したメンバシップ関数を示す説明図FIG. 3 is used to represent the magnitude of the received electric field strength, the rate of change over time of the received electric field strength, and the adjustment amount of the transmission power stored in the knowledge base of the wireless telephone according to one embodiment of the present invention in a fuzzy set. Illustration showing the membership function
【図４】本発明の一実施例の送信電力調整量判別手段が
採用した推論ルールをマトリクスで表現した説明図FIG. 4 is an explanatory diagram in which inference rules adopted by a transmission power adjustment amount determination unit according to one embodiment of the present invention are expressed in a matrix;
【図５】本発明の一実施例の送信電力調整量判別手段に
おけるある時間における固定基地局から返送された電界
強度の大きさが８、電界強度の時間変化率が−２０％で
ある場合に必要な送信電力の調整量を推論する過程と推
論結果を示す説明図FIG. 5 shows a case where the magnitude of the electric field strength returned from the fixed base station at a certain time is 8 and the time change rate of the electric field strength is -20% in the transmission power adjustment amount discriminating means of one embodiment of the present invention. Explanatory diagram showing the process of inferring the required amount of transmission power adjustment and the inference result
【図６】本発明の一実施例の送信電力調整量判別手段に
おけるある時間における固定基地局から返送された電界
強度の大きさが３、電界強度の時間変化率が＋５％であ
る場合に必要な送信電力の調整量を推論する過程と推論
結果を示す説明図FIG. 6 is necessary when the magnitude of the electric field strength returned from the fixed base station at a certain time is 3 and the time rate of change of the electric field strength is + 5% in the transmission power adjustment amount discriminating means of one embodiment of the present invention. Diagram showing the process of inferring the amount of adjustment of the transmission power and the inference result
【符号の説明】 Ａ 固定基地局 Ｂ 無線電話機 １ 基地局制御信号復調手段 ２ 基地局制御手段 ３ 基地局受信電界強度検出手段 ４ 基地局制御信号変調手段 ５ 受信部 ６ 送信部 ７ 電話機制御信号復調手段 ８ 電話機制御手段 ９ 電界強度検出手段 １０ 周期起動手段 １１ 知識ベース １２ 送信電力調整量判別手段 １３ 送信電力制御手段 １４ 受信部 １５ 送信部[Description of Signs] A Fixed base station B Radiotelephone 1 Base station control signal demodulation means 2 Base station control means 3 Base station reception electric field strength detection means 4 Base station control signal modulation means 5 Receiver 6 Transmitter 7 Telephone control signal demodulation Means 8 Telephone control means 9 Electric field strength detection means 10 Period activation means 11 Knowledge base 12 Transmission power adjustment amount discriminating means 13 Transmission power control means 14 Receiver 15 Transmitter
Claims (3)
きる無線電話機とからなり、 固定基地局には、 電波を受信する受信部と、電波を発信する発信部と、受
信部で受信された制御信号を復調する基地局制御信号復
調手段と、前記基地局制御信号復調手段の出力から受信
電界強度の大きさを検出する基地局受信電界強度検出手
段と、前記基地局受信電界強度検出手段で得た電界強度
情報を無線電話機へ送信可能なように変調する基地局制
御信号変調手段とを備え、 無線電話機には、 電波を受信する受信部と、電波を発信する発信部と、前
記受信部で受信された制御信号を復調する電話機制御信
号復調手段と、前記電話機制御信号復調手段によって復
調された受信制御信号のうち電界強度情報を解釈する電
界強度検出手段と、 周期的に出力を発生する周期起動手段と、電界強度の大
きさ・時間変化の度合いに対応する送信出力に関する知
識を記憶する知識ベースと、前記周期起動手段の出力と
前記電界強度検出手段によって得られた情報と前記知識
ベースとを基に固定基地局で受信された電界強度の大き
さとその時間変化量を調べ、その結果に応じて送信電力
の調整量を決定する送信電力調整量判別手段と、前記送
信電力調整量判別手段の出力から送信部の送信電力の大
きさを制御する送信電力制御手段とを備えたことを特徴
とする無線電話装置。1. A fixed base station, comprising a radio telephone capable of communicating with the fixed base station by radio waves, wherein the fixed base station has a receiving section for receiving radio waves, a transmitting section for transmitting radio waves, and a receiving section for receiving. Base station control signal demodulation means for demodulating the received control signal, base station reception field strength detection means for detecting the magnitude of the reception field strength from the output of the base station control signal demodulation means, and base station reception field strength detection Electric field strength obtained by means
A base station control signal modulating means for modulating the information so that the information can be transmitted to the radiotelephone ; the radiotelephone has a reception unit for receiving a radio wave, a transmission unit for transmitting a radio wave, and a signal received by the reception unit. and the telephone control signal demodulating means for demodulating a control signal, restored by the telephone control signal demodulating means
Electric field strength detecting means for interpreting the electric field strength information of the adjusted reception control signal, period starting means for periodically generating the output, and knowledge about the transmission output corresponding to the magnitude of the electric field strength and the degree of time change. A knowledge base to be stored, an output of the periodic activation means,
Information obtained by the electric field strength detection means and the knowledge
The magnitude of the electric field strength received by the fixed base station based on the base
And a time change amount thereof, and a transmission power adjustment amount determining means for determining an adjustment amount of the transmission power according to the result, and controlling the magnitude of the transmission power of the transmitting unit from an output of the transmission power adjustment amount determining means. A wireless telephone device comprising transmission power control means.
備えたことを特徴とする請求項１記載の無線電話装置。2. The wireless telephone device according to claim 1, wherein said transmission power adjustment amount determining means has an inference function.
きる無線電話機とからなり、 固定基地局には、 電波を受信する受信部と、電波を発信する発信部と、受
信部で受信された制御信号を復調する基地局制御信号復
調手段と、前記基地局制御信号復調手段の出力から受信
電界強度の大きさを検出する基地局受信電界強度検出手
段と、前記基地局 制御信号復調手段によって復調された
制御信号に基づく基地局制御を行ない、かつ無線電話機
に対して制御情報を出力する基地局制御手段と、前記基
地局受信電界強度検出手段で得た電界強度情報と前記基
地局制御手段から出力された電話機制御情報とを電話機
に送信するために情報符号を変調する基地局制御信号変
調手段とを備え、 無線電話機には、 電波を受信する受信部と、電波を発信する発信部と、前
記受信部で受信された制御信号を復調する電話機制御信
号復調手段と、前記電話機制御信号復調手段によって復
調された制御信号のうち電話機制御情報を解釈して実行
する電話機制御手段と、前記受信制御信号のうち電界強
度情報を解釈する電界強度検出手段と、 周期的に出力を発生する周期起動手段と、電界強度の大
きさ・時間変化の度合い・送信出力の調整量に関する知
識を記憶する知識ベースと、前記電界強度検出手段と前
記周期起動手段の出力を受け、前記知識ベースを基に固
定基地局で受信された電界強度の大きさとその時間変化
量から無線電話機と固定基地局との距離や電波伝搬状態
の変化を判定し、判定結果に応じて送信電力の調整量を
決定する送信電力調整量判別手段と、前記送信電力調整
量判別手段の出力から送信部の送信電力の大きさを制御
する送信電力制御手段とを備えたことを特徴とする 無線
電話装置。3. A fixed base station and a communication with the fixed base station by radio waves.
The fixed base station has a receiving unit for receiving radio waves, a transmitting unit for transmitting radio waves,
Base station control signal demodulation for demodulating the control signal received by
Receiving means from the output of the base station control signal demodulating means.
Base station reception electric field strength detector that detects the magnitude of electric field strength
Stage, demodulated by the base station control signal demodulation means.
Base station control based on control signals, and wireless telephone
Base station control means for outputting control information to the base station;
The electric field strength information obtained by the
The telephone control information output from the local station control means and the telephone
Base station control signal modulation that modulates information codes for transmission to
The wireless telephone has a receiving unit for receiving radio waves, a transmitting unit for transmitting radio waves,
Telephone control signal for demodulating the control signal received by the receiver
Signal demodulation means and the telephone control signal demodulation means.
Interpret and execute telephone control information from the adjusted control signals
Telephone control means for controlling the electric field strength of the reception control signal.
Electric field intensity detecting means for interpreting the intensity information, periodic starting means for periodically generating an output,
Knowledge about magnitude, degree of time change, and amount of transmission output adjustment
A knowledge base for storing knowledge,
Receiving the output of the periodic activation means, based on the knowledge base
Electric field strength received by a fixed base station and its time change
Distance and radio wave propagation state between the wireless telephone and fixed base station
And adjust the amount of transmission power adjustment according to the determination result.
Transmission power adjustment amount determining means for determining, and the transmission power adjustment
Controlling the transmission power of the transmitter from the output of the quantity discriminator
And a transmission power control unit .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04174018A JP3099526B2 (en) | 1992-07-01 | 1992-07-01 | Wireless telephone equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04174018A JP3099526B2 (en) | 1992-07-01 | 1992-07-01 | Wireless telephone equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0621871A JPH0621871A (en) | 1994-01-28 |
| JP3099526B2 true JP3099526B2 (en) | 2000-10-16 |
Family
ID=15971205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04174018A Expired - Fee Related JP3099526B2 (en) | 1992-07-01 | 1992-07-01 | Wireless telephone equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3099526B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1545025B1 (en) | 2003-03-18 | 2013-06-12 | Fujitsu Limited | Transmission power controller and radio base station |
-
1992
- 1992-07-01 JP JP04174018A patent/JP3099526B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0621871A (en) | 1994-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5519506A (en) | Data communication system with automatic power control | |
| US7062250B1 (en) | Radio communication terminal having variable data transmission speed responsive to built-in battery power | |
| US5953646A (en) | System for controlling power consumption of a mobile radio communication device during standby using signal error rate | |
| JP3078286B1 (en) | Battery remaining amount display circuit and mobile communication terminal device provided with this circuit | |
| EP0331434B1 (en) | Radio telecommunication apparatus | |
| JPH10304030A (en) | Portable telephone system | |
| JP3562459B2 (en) | Mobile terminal device | |
| KR910005651B1 (en) | Radio communication apparatus | |
| KR100630077B1 (en) | Apparatus and method for charging bluetooth wireless earphone using power of potable phone | |
| JPH02252329A (en) | Radio telephone system | |
| JP3099526B2 (en) | Wireless telephone equipment | |
| JPH08167872A (en) | Mobile radio communication system and power controlling method | |
| JP3232620B2 (en) | Wireless telephone | |
| JPH0695651B2 (en) | Wireless communication device | |
| JPH11150761A (en) | Mobile radio communication system for radio communication by w-cdma system | |
| JPH05268141A (en) | Automatic adjustment device of transmission output for radio equipment and its method | |
| JPH09149461A (en) | Analog cordless telephone equipment | |
| JPS6393241A (en) | Radio data reception system for mobile slave station | |
| JPH07177055A (en) | Radio terminal equipment | |
| JP2524701Y2 (en) | Wireless telephone equipment | |
| JPH0227646Y2 (en) | ||
| JP2001007715A (en) | Transmitter and radio communications equipment | |
| JP3282319B2 (en) | Mobile communication system, its radio base station, and mobile terminal | |
| JPH024532Y2 (en) | ||
| JPH05292006A (en) | Cordless telephone system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |