JPH1013338A - Automatic transmission power control system of radio communication equipment - Google Patents
Automatic transmission power control system of radio communication equipmentInfo
- Publication number
- JPH1013338A JPH1013338A JP8159546A JP15954696A JPH1013338A JP H1013338 A JPH1013338 A JP H1013338A JP 8159546 A JP8159546 A JP 8159546A JP 15954696 A JP15954696 A JP 15954696A JP H1013338 A JPH1013338 A JP H1013338A
- Authority
- JP
- Japan
- Prior art keywords
- transmission power
- signal
- counter
- base station
- communication device
- 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.)
- Granted
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
- Transceivers (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Transmitters (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は無線通信機の送信電
力自動制御方式に関し、特にバッテリーの無駄な使用を
防止し、バッテリーの使用時間を延長する送信電力制御
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic transmission power control method for a wireless communication device, and more particularly to a transmission power control method for preventing useless use of a battery and extending use time of a battery.
【０００２】[0002]
【従来の技術】通常、無線通信機の電源には充電式のバ
ッテリーが使用され、回路動作に必要な電力，無線電波
を送信するための電力を供給している。従って、使用期
間が有限のバッテリーの延命は重要な問題であり、その
ため基地局との距離や通信条件により送信電力を制御し
無駄な送信電力を抑制する方法が期待される。2. Description of the Related Art Normally, a rechargeable battery is used as a power source of a radio communication device to supply power necessary for circuit operation and power for transmitting radio waves. Therefore, extending the life of a battery having a finite use period is an important problem. Therefore, a method of controlling the transmission power in accordance with the distance to the base station and communication conditions to suppress wasteful transmission power is expected.
【０００３】従来、この種の送信電力制御方式として、
受信電界強度を予め定めた基準値と比較し、その比較結
果により送信電力を制御する方式が例えば、特開平２−
１４８９２０号公報（携帯型無線機の送信電力制御装
置），特開平３−２０８４２４号公報（コードレス電話
装置）に提案されている。Conventionally, as this type of transmission power control method,
A method of comparing the received electric field strength with a predetermined reference value and controlling the transmission power based on the comparison result is disclosed in, for example, Japanese Patent Laid-Open No.
No. 148920 (Transmission power control device for portable radio) and Japanese Patent Application Laid-Open No. 3-208424 (cordless telephone device).
【０００４】また、基地局から送信されてくる制御指示
に従い送信レベルを制御する方式が例えば、特開平２−
２１５２３８号公報（移動無線装置）に提案されてい
る。A method of controlling a transmission level in accordance with a control instruction transmitted from a base station is disclosed in, for example, Japanese Patent Laid-Open No.
No. 215238 (mobile radio apparatus).
【０００５】一方、基地局は、図４（Ａ）に示すように
複数の小さなエリア２０それぞれに無線通信機との間で
無線周波を介して通信する送受信基地局２１を設置し、
そのエリア内の無線通信機２２と相互通信し、且つ各送
受信基地局間を有線（図示せず）で接続した構成や、図
４（Ｂ）に示すように小さなエリア２０それぞれに無線
通信機からの送信情報を受信する受信基地局２３を設置
し、またエリア３０内の小さなエリア２０内のすべての
無線通信機２４の受信情報を無線通信機へ直接送信する
送信基地局３１を設置し、各エリア内の受信基地局と送
信基地局間は有線で接続し相互通信する構成がある。On the other hand, as shown in FIG. 4 (A), the base station installs a transmission / reception base station 21 for communicating with a radio communication device via a radio frequency in each of a plurality of small areas 20,
A configuration in which the wireless communication device 22 communicates with the wireless communication device 22 in the area and the transmission and reception base stations are connected by a wire (not shown), or as shown in FIG. And a transmission base station 31 for directly transmitting the reception information of all the wireless communication devices 24 in the small area 20 in the area 30 to the wireless communication device. There is a configuration in which a receiving base station and a transmitting base station in an area are connected by wires and communicate with each other.
【０００６】[0006]
【発明が解決しようとする課題】このように、特開平２
−１４８９２０号公報に提案されている携帯型無線機の
送信電力制御装置および特開平３−２０８４２４号公報
に提案されているコードレス電話装置は、いずれも受信
電界強度を予め定めた基準値と比較し、その比較結果に
より送信電力を制御するため、無線通信機と基地局との
間で送受信される電波経路が同一な図４（Ａ）に示す基
地局構成の場合は有用であるが（無線通信機の受信電界
レベルが大きければ、基地局の受信電界レベルも大き
い）、無線通信機から受信基地局へ送信し、無線通信機
が送信基地局から直接受信する送受信経路が異る図４
（Ｂ）に示す基地局構成の場合は、受信電界レベルに対
応して送信電力を制御すると送信エラーが発生する危険
性がある。As described above, Japanese Patent Laid-Open No.
The transmission power control device for a portable wireless device proposed in JP-A-148920 and the cordless telephone device proposed in JP-A-3-208424 both compare the received electric field strength with a predetermined reference value. Since the transmission power is controlled based on the comparison result, it is useful in the case of the base station configuration shown in FIG. 4A where the radio wave path transmitted and received between the wireless communication device and the base station is the same (wireless communication). The higher the reception electric field level of the wireless communication device, the higher the reception electric field level of the base station), and the transmission / reception path for transmitting from the wireless communication device to the receiving base station and receiving directly from the transmission base station by the wireless communication device is different from that of FIG.
In the case of the base station configuration shown in (B), there is a risk that a transmission error will occur if the transmission power is controlled according to the reception electric field level.
【０００７】また、特開平２−２１５２３８号公報に提
案されている移動無線装置は、図４（Ａ），（Ｂ）に示
すいずれの基地局構成にも有用であるが、無線通信機に
対し送信電力の出力制御のためのプロトコル制御機能を
基地局に備える必要があり、汎用性がない。The mobile radio device proposed in Japanese Patent Application Laid-Open No. 2-215238 is useful for any of the base station configurations shown in FIGS. 4A and 4B. It is necessary to provide the base station with a protocol control function for output control of transmission power, and there is no versatility.
【０００８】本発明の目的は、基地局と無線通信機との
間で通常送受信されているＡＣＫ信号またはＮＡＣＫ信
号を利用して送信電力を制御する無線通信機の送信電力
自動制御方式を提供することにある。An object of the present invention is to provide an automatic transmission power control method for a radio communication device that controls transmission power using an ACK signal or a NACK signal normally transmitted and received between a base station and the radio communication device. It is in.
【０００９】[0009]
【課題を解決するための手段】本発明の無線通信機の送
信電力自動制御方式は、基地局へデータを送信したとき
基地局から返送されるＡＣＫ信号またはＮＡＣＫ信号を
受信し、前記ＮＡＣＫ信号を受信したときに前記データ
を再送する無線通信機において；前記ＡＣＫ信号を所定
回数受信したときに送信電力を所定量降下させ、前記Ｎ
ＡＣＫ信号を受信したときに前記送信電力を所定量上昇
させることを特徴とする。An automatic transmission power control method for a radio communication apparatus according to the present invention receives an ACK signal or a NACK signal returned from a base station when data is transmitted to the base station, and transmits the NACK signal. A wireless communication device for retransmitting the data upon reception; when receiving the ACK signal a predetermined number of times, lowering the transmission power by a predetermined amount;
The transmission power is increased by a predetermined amount when an ACK signal is received.
【００１０】また、基地局へデータを送信したとき基地
局から返送されるＡＣＫ信号またはＮＡＣＫ信号を受信
し、前記ＮＡＣＫ信号を受信したときに前記データを再
送する無線通信機において；前記ＡＣＫ信号の受信回数
を計数するカウンタを有し；電源投入時に前記カウンタ
を初期化し前記ＡＣＫ信号または／ＮＡＣＫ信号の待受
状態を設定する手段と；前記ＡＣＫ信号またはＮＡＣＫ
信号を識別する手段と；前記識別手段がＡＣＫ信号を識
別したとき前記カウンタを加算する手段と；前記カウン
タを監視し、前記カウンタの計数値と予め設定した所定
回数と照合する手段と；前記照合結果が前記所定回数以
下のときに前記ＡＣＫ信号またはＮＡＣＫ信号の待受状
態に移行し、前記所定回数以上のときに前記カウンタを
初期化し且つ前記送信電力を予め設定した所定量降下さ
せ、前記識別手段が前記ＮＡＣＫ信号を識別したとき直
ちに前記送信電力を予め設定した所定量上昇させる送信
電力制御手段と；を有することを特徴とする。[0010] Further, in a radio communication device for receiving an ACK signal or a NACK signal returned from the base station when transmitting data to the base station and retransmitting the data when receiving the NACK signal; Means for counting the number of times of reception; means for initializing the counter at power-on and setting a waiting state for the ACK signal or / NACK signal; and the ACK signal or NACK
Means for identifying a signal; means for adding the counter when the identification means identifies an ACK signal; means for monitoring the counter and matching the count value of the counter with a predetermined number of times; When the result is equal to or less than the predetermined number of times, the state shifts to a standby state of the ACK signal or the NACK signal. When the result is equal to or more than the predetermined number of times, the counter is initialized and the transmission power is decreased by a predetermined amount. Transmission power control means for immediately increasing the transmission power by a predetermined amount when the means identifies the NACK signal.
【００１１】更に、前記送信電力の昇降はステップで推
移することを特徴とする。Further, the transmission power is increased or decreased in steps.
【００１２】[0012]
【発明の実施の形態】次に、本発明の実施の形態につい
て図面を参照して詳細に説明する。図１は本発明の送信
電力の自動制御処理を示すフローチャートである。図２
は本発明の無線通信機の主要構成を示すブロック図であ
る。図３は本発明の自動制御による送信電力の制御推移
を示す図であり、（Ａ）は送信電力の初期値が最適値よ
り大きい場合を示し、（Ｂ）は初期値より小さい場合を
示す図である。図４は基地局の構成を示し、（Ａ）は送
受信基地局の分散構成を示し、（Ｂ）は受信基地局分散
／送信基地局集中構成を示す図である。Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a flowchart showing an automatic transmission power control process according to the present invention. FIG.
FIG. 1 is a block diagram illustrating a main configuration of a wireless communication device according to the present invention. 3A and 3B are diagrams showing a transition of control of transmission power by the automatic control of the present invention, wherein FIG. 3A shows a case where the initial value of the transmission power is larger than the optimum value, and FIG. It is. 4A and 4B show the configuration of the base station, FIG. 4A shows the distributed configuration of the transmitting and receiving base stations, and FIG. 4B shows the distributed configuration of the receiving base station / centralized transmitting base station.
【００１３】本発明の無線通信機１０は、図２に示すよ
うに基地局の各種データやＡＣＫ信号またはＮＡＣＫ信
号をアンテナ１１を介して受信し復調，復号化処理する
受信部１２と、送信周波数を発生する発信器１７と送信
データを復号化，変調処理する変調器１６と送信電力を
可変する増幅器１５とから成る送信部１４と、無線通信
機全体を制御する制御部とから構成されている。As shown in FIG. 2, a radio communication device 10 according to the present invention includes a receiving section 12 for receiving various data of a base station, an ACK signal or a NACK signal via an antenna 11, and demodulating and decoding the data. The transmitter 14 comprises a transmitter 17 for generating a signal, a modulator 16 for decoding and modulating transmission data, and an amplifier 15 for varying transmission power, and a controller for controlling the entire wireless communication device. .
【００１４】次に図１に図２，図３を併せて参照し送信
電力の制御処理について説明する。通常、無線通信機か
ら基地局（図示せず）に対しデータをブロック単位に送
信し、基地局でそのデータが正常に受信されたか否かを
示すＡＣＫ信号（正常受信時）またはＮＡＣＫ（受信異
常時）信号が基地局から無線通信機に対し返送され、無
線通信機はＮＡＣＫ信号を受信した場合にはデータを再
送する。Next, the transmission power control process will be described with reference to FIGS. Normally, data is transmitted from a wireless communication device to a base station (not shown) in block units, and an ACK signal (at normal reception) indicating whether the data has been normally received at the base station or a NACK (abnormal reception). Time) A signal is returned from the base station to the wireless communication device, and the wireless communication device retransmits data when receiving a NACK signal.
【００１５】無線通信機１０の電源が投入されると（図
１のステップＳ１０１）、初期状態となり送信電力制御
プログラムのカウンタが初期化され、「０」が設定され
（Ｓ１０２）、ＡＣＫ信号またはＮＡＣＫ信号待ち状態
となる（Ｓ１０３）。この状態で基地局に対しデータを
送信すると、基地局からＡＣＫ信号またはＮＡＣＫ信号
（以下応答信号と称す）が返送される。When the power of the radio communication device 10 is turned on (step S101 in FIG. 1), the radio communication device 10 enters an initial state, the counter of the transmission power control program is initialized, and "0" is set (S102), and the ACK signal or NACK A signal waiting state is set (S103). When data is transmitted to the base station in this state, an ACK signal or a NACK signal (hereinafter, referred to as a response signal) is returned from the base station.
【００１６】無線通信機１０の制御部１３は、受信部１
２を介してこの応答信号を受信し、応答信号が正常受信
（ＡＣＫ）か、受信不成功よる再送要求（ＮＡＣＫ）か
を識別し（Ｓ１０４）、ＡＣＫ信号の場合にはカウンタ
に「１」加算する（Ｓ１０５）。The control unit 13 of the radio communication device 10
2 to determine whether the response signal is normal reception (ACK) or a retransmission request (NACK) due to unsuccessful reception (S104). If the response signal is an ACK signal, add "1" to the counter. (S105).
【００１７】無線通信機１０の制御部１３は、カウンタ
の計数値を監視し、現在のカウンタの計数値と予め設定
したＡＣＫ信号連続受信回数ｍとを照合する（Ｓ１０
６）。例えばｍ＝３と仮定した場合、ステップＳ１０５
におけるカウンタの計数値は「１」であるためステップ
１０３に移行し、再びＡＣＫ信号を受信するとカウンタ
に再び「１」加算する（Ｓ１０５）。The control unit 13 of the wireless communication device 10 monitors the count value of the counter and checks the current count value of the counter against a preset number m of continuous receptions of the ACK signal (S10).
6). For example, assuming that m = 3, step S105
Since the count value of the counter is "1", the flow shifts to step 103, and when the ACK signal is received again, "1" is added to the counter again (S105).
【００１８】こうしてカウンタの計数値ｍが「３」にな
るまでステップＳ１０４〜Ｓ１０６の処理を繰返し、カ
ウンタの計数値がｍ＝３となるとカウンタを「０」にリ
セットし（Ｓ１０７）、送信部１４の増幅器１５に対し
送信電力の降下を指示する制御信号を出力し（Ｓ１０
８）、ステップＳ１０３のＡＣＫ／ＮＡＣＫ待受状態に
移行し、基地局からの応答信号を到来を待つ。The processing of steps S104 to S106 is repeated until the count value m of the counter becomes "3". When the count value of the counter becomes m = 3, the counter is reset to "0" (S107), and Output a control signal to instruct the amplifier 15 to decrease the transmission power (S10).
8), transition to an ACK / NACK standby state in step S103 and wait for a response signal from the base station to arrive.
【００１９】ステップＳ１０４においてＮＡＣＫ信号を
識別した場合には、カウンタを加算することなく初期値
「０」のまま（Ｓ１０９）直ちに、送信部１４の増幅器
１５に対し送信電力の上昇を指示する制御信号を出力し
（Ｓ１１０）、ステップＳ１０３のＡＣＫ／ＮＡＣＫ待
受状態に移行し、基地局からの応答信号を到来を待つ。
なお、増幅器１５に出力する送信電力降下を指示する制
御信号は論理「１」とし、送信電力上昇を指示する制御
信号は論理「０」とする。If the NACK signal is identified in step S104, the control signal for instructing the amplifier 15 of the transmission unit 14 to increase the transmission power is immediately added to the initial value "0" without adding a counter (S109). Is output (S110), and the process shifts to an ACK / NACK standby state in step S103 to wait for a response signal from the base station.
The control signal output to the amplifier 15 and instructing a decrease in transmission power is set to logic "1", and the control signal instructing to increase transmission power is set to logic "0".
【００２０】図３（Ａ）は前回の送信電力が現在の最適
値（基地局で正常受信可能な現時点における最小送信電
力）より大きい場合の送信電力のレベル制御推移を示
す。ＡＣＫ信号を連続３回受信し、予め設定した所定
量、送信電力が降下し、その後、再びＡＣＫ信号を連続
３回受信し再度、所定量、送信電力が降下しとたとき、
現時点における最適な送信電力が得られたことを示し、
この状態でＮＡＣＫ信号を受信し、直ちに送信電力が所
定量上昇したことを示している。FIG. 3A shows the level control transition of the transmission power when the previous transmission power is larger than the current optimum value (the minimum transmission power at the present time at which the base station can normally receive). When the ACK signal is received three times continuously and the transmission power decreases by a predetermined amount, and then the ACK signal is received three times again continuously and the transmission power drops again by a predetermined amount,
Indicates that the optimal transmission power at this time was obtained,
In this state, the NACK signal is received, and the transmission power immediately increases by a predetermined amount.
【００２１】図３（Ｂ）は前回の送信電力が現在の最適
値（基地局で正常受信可能な現時点における最小送信電
力）より小さい場合の送信電力のレベル制御推移を示
す。図１のステップＳ１０４〜Ｓ１１０の処理により、
ＮＡＣＫ信号を一回受信し、直ちに送信電力が所定量上
昇する動作を３回繰返したとき、現時点における最適な
送信電力が得られたことを示し、この状態でＡＣＫ信号
を連続３回受信し、現時点における最適な送信電力を得
た後、再びＮＡＣＫ信号を一回受信し、直ちに送信電力
が所定量上昇したことを示している。FIG. 3B shows the transition of the level control of the transmission power when the previous transmission power is smaller than the current optimum value (the minimum transmission power at the present time at which the base station can normally receive). By the processing of steps S104 to S110 in FIG.
When the NACK signal is received once and the operation of immediately increasing the transmission power by a predetermined amount is repeated three times, it indicates that the optimum transmission power at the present time has been obtained. In this state, the ACK signal is continuously received three times, After obtaining the optimum transmission power at the present time, the NACK signal is received once again, indicating that the transmission power immediately increases by a predetermined amount.
【００２２】このように、現時点における送信電力が十
分で無線通信機から送信したデータが基地局で正常受信
されたとき、基地局から返送されるＡＣＫ信号を所定回
数（例えば３回）受信したとき、無線通信機は送信電力
を予め設定した所定量（１ステップ）ずつ下げる動作を
繰返し、その途中でＮＡＣＫ信号を１回受信すると直ち
に送信電力を所定量上げることにより、現時点における
無線通信機の送信電力を得て、必要最低限の送信電力で
基地局と通信が可能となり、そのためバッテリーの使用
時間、すなわち寿命を延命することができる。As described above, when the transmission power is sufficient at the present time and the data transmitted from the wireless communication device is normally received by the base station, or when the ACK signal returned from the base station is received a predetermined number of times (for example, three times) The wireless communication device repeats the operation of lowering the transmission power by a predetermined amount (one step) by a predetermined amount (one step), and increases the transmission power by a predetermined amount immediately upon receiving one NACK signal in the middle of the operation. By obtaining power, it becomes possible to communicate with the base station with the required minimum transmission power, and therefore, the use time of the battery, that is, the life can be extended.
【００２３】[0023]
【発明の効果】以上説明したように本発明は、基地局へ
データをブロック単位で送信する毎に、基地局から返送
されるＡＣＫ信号またはＮＡＣＫ信号を利用し、ＡＣＫ
信号を連続所定回数受信したとき送信電力を所定量ずつ
降下させ、ＮＡＣＫ信号を１回受信するたびに送信電力
を所定量ずつ上昇させて、現時点における無線通信機の
送信電力を基地局が受信可能な最小送信電力に設定する
よう構成することにより、基地局の受信性能を損なうこ
となく無線通信機の消費電力を常に最小限に抑制するこ
とができるので、バッテリーの寿命を延命することがで
きる。As described above, the present invention utilizes the ACK signal or NACK signal returned from the base station every time data is transmitted to the base station in units of blocks.
The base station can receive the transmission power of the wireless communication device at the present time by lowering the transmission power by a predetermined amount when receiving a signal a predetermined number of times in succession and increasing the transmission power by a predetermined amount each time a NACK signal is received once. By setting the minimum transmission power, the power consumption of the wireless communication device can always be minimized without deteriorating the reception performance of the base station, so that the life of the battery can be extended.
【００２４】また、既存のシステムに特殊なプロトコル
制御を付加することなく無線通信機の送信電力を自動制
御することができる。Further, the transmission power of the wireless communication device can be automatically controlled without adding a special protocol control to the existing system.
【図１】本発明の送信電力の自動制御処理を示すフロー
チャートである。FIG. 1 is a flowchart showing an automatic transmission power control process according to the present invention.
【図２】本発明の無線通信機の主要構成を示すブロック
図である。FIG. 2 is a block diagram illustrating a main configuration of a wireless communication device according to the present invention.
【図３】本発明の自動制御による送信電力のレベル制御
推移を示す図であり、（Ａ）は送信電力の初期値が最適
値より大きい場合を示し、（Ｂ）は初期値より小さい場
合を示す図である。3A and 3B are diagrams illustrating a transition of level control of transmission power by automatic control according to the present invention, wherein FIG. 3A illustrates a case where an initial value of transmission power is larger than an optimum value, and FIG. FIG.
【図４】基地局の構成を示し、（Ａ）は送受信基地局の
分散構成を示し、（Ｂ）は受信基地局分散／送信基地局
集中構成を示す図である。4A and 4B are diagrams illustrating a configuration of a base station, FIG. 4A illustrates a distributed configuration of transmitting and receiving base stations, and FIG. 4B illustrates a distributed configuration of a receiving base station and a centralized transmitting base station.
１０ 無線通信機 １１ アンテナ １２ 受信部 １３ 制御部 １４ 送信部 １５ 増幅器 １６ 変調器 １７ 発信機 ２０ エリア（小） ２１ 無線通信機 ２２ 送受信基地局 ２３ 受信基地局 ２４ 無線通信機 ３０ エリア（大） ３１ 送信基地局 REFERENCE SIGNS LIST 10 wireless communication device 11 antenna 12 reception unit 13 control unit 14 transmission unit 15 amplifier 16 modulator 17 transmitter 20 area (small) 21 wireless communication device 22 transmission and reception base station 23 reception base station 24 wireless communication device 30 area (large) 31 Transmitting base station
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｈ０４Ｍ 1/00 Ｈ０４Ｂ 7/26 １０９Ｍ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification number Agency reference number FI Technical display location H04M 1/00 H04B 7/26 109M
Claims (3)
ら返送されるＡＣＫ信号またはＮＡＣＫ信号を受信し、
前記ＮＡＣＫ信号を受信したときに前記データを再送す
る無線通信機において；前記ＡＣＫ信号を所定回数受信
したときに送信電力を所定量降下させ、前記ＮＡＣＫ信
号を受信したときに前記送信電力を所定量上昇させるこ
とを特徴とする無線通信機の送信電力自動制御方式。An ACK signal or a NACK signal returned from the base station when data is transmitted to the base station;
A wireless communication device that retransmits the data when the NACK signal is received; reduces the transmission power by a predetermined amount when the ACK signal is received a predetermined number of times; and reduces the transmission power by a predetermined amount when the NACK signal is received. An automatic transmission power control method for a wireless communication device, wherein the transmission power is increased.
ら返送されるＡＣＫ信号またはＮＡＣＫ信号を受信し、
前記ＮＡＣＫ信号を受信したときに前記データを再送す
る無線通信機において；前記ＡＣＫ信号の受信回数を計
数するカウンタを有し；電源投入時に前記カウンタを初
期化し前記ＡＣＫ信号または／ＮＡＣＫ信号の待受状態
を設定する手段と；前記ＡＣＫ信号またはＮＡＣＫ信号
を識別する手段と；前記識別手段がＡＣＫ信号を識別し
たとき前記カウンタを加算する手段と；前記カウンタを
監視し、前記カウンタの計数値と予め設定した所定回数
と照合する手段と；前記照合結果が前記所定回数以下の
ときに前記ＡＣＫ信号またはＮＡＣＫ信号の待受状態に
移行し、前記所定回数以上のときに前記カウンタを初期
化し且つ前記送信電力を予め設定した所定量降下させ、
前記識別手段が前記ＮＡＣＫ信号を識別したとき直ちに
前記送信電力を予め設定した所定量上昇させる送信電力
制御手段と；を有することを特徴とする無線通信機の送
信電力自動制御方式。2. An ACK signal or a NACK signal returned from the base station when data is transmitted to the base station,
A wireless communication device for retransmitting the data when receiving the NACK signal; having a counter for counting the number of times the ACK signal is received; initializing the counter when power is turned on and waiting for the ACK signal or / NACK signal Means for setting a state; means for identifying the ACK signal or NACK signal; means for adding the counter when the identification means identifies the ACK signal; monitoring the counter; Means for collating with the set predetermined number of times; shifting to a standby state for the ACK signal or NACK signal when the collation result is equal to or less than the predetermined number of times; Lower the power by a predetermined amount,
Transmission power control means for increasing the transmission power by a predetermined amount immediately upon identification of the NACK signal by the identification means.
ることを特徴とする請求項２記載の無線通信機の送信電
力自動制御方式。3. The automatic transmission power control method for a wireless communication device according to claim 2, wherein the transmission power rises and falls in steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8159546A JP2821430B2 (en) | 1996-06-20 | 1996-06-20 | Automatic transmission power control method for wireless communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8159546A JP2821430B2 (en) | 1996-06-20 | 1996-06-20 | Automatic transmission power control method for wireless communication equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1013338A true JPH1013338A (en) | 1998-01-16 |
| JP2821430B2 JP2821430B2 (en) | 1998-11-05 |
Family
ID=15696120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8159546A Expired - Fee Related JP2821430B2 (en) | 1996-06-20 | 1996-06-20 | Automatic transmission power control method for wireless communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2821430B2 (en) |
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