JPH0669898A - Time division multi-direction multiplex communication device capable of varying transmission power - Google Patents
Time division multi-direction multiplex communication device capable of varying transmission powerInfo
- Publication number
- JPH0669898A JPH0669898A JP23763892A JP23763892A JPH0669898A JP H0669898 A JPH0669898 A JP H0669898A JP 23763892 A JP23763892 A JP 23763892A JP 23763892 A JP23763892 A JP 23763892A JP H0669898 A JPH0669898 A JP H0669898A
- Authority
- JP
- Japan
- Prior art keywords
- transmission power
- circuit
- transmission
- power information
- master station
- 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.)
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- Time-Division Multiplex Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は時分割多方向多重通信装
置に係り、特に無線回線の品質により無線通信回路の送
信電力を可変とした送信電力可変な時分割多方向多重通
信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 time division multiplex multiplex communication apparatus, and more particularly to a time division multiplex multiplex communication apparatus in which the transmission power of a wireless communication circuit is variable depending on the quality of a wireless line. is there.
【０００２】[0002]
【従来の技術】従来の時分割多方向多重通信装置はフェ
ージング等により無線回線の回線品質が劣化したとき
は、伝送能力が低下していた。2. Description of the Related Art In a conventional time division multi-directional multiplex communication apparatus, when the line quality of a wireless line is deteriorated due to fading or the like, the transmission capacity is lowered.
【０００３】[0003]
【発明が解決しようとする課題】上述した従来の時分割
多方向多重通信装置では、無線回線の回線品質が劣化し
たとき伝送能力が低下するという問題があった。しかし
ながら、できれば通信の性能の低下は避けたいところで
あり、従来からこの解決が要望されていたが、いまだそ
の的確容易な方法がなかった。本発明はかかる問題を解
決するためになされたもので、無線回線の回線品質が低
下しても伝送性能を保つことができる送信電力可変な時
分割多方向多重通信装置を得ることを目的とする。The above-mentioned conventional time division multi-directional multiplex communication device has a problem that the transmission capacity is deteriorated when the line quality of the wireless line is deteriorated. However, it is desirable to avoid deterioration of communication performance if possible, and there has been a demand for this solution from the past, but there has not yet been an accurate method. The present invention has been made to solve the above problems, and an object of the present invention is to obtain a time division multi-directional multiplex communication apparatus with variable transmission power that can maintain transmission performance even if the line quality of a wireless line deteriorates. .
【０００４】[0004]
【課題を解決するための手段】本発明の送信電力可変な
時分割多方向多重通信装置は、１つの親局と、この親局
と無線を利用して通信を行う複数の子局とから構成され
る時分割多方向多重通信システムにおいて、上記親局は
上記複数の子局からの受信電界を監視する第１の監視手
段と、上記受信電界に応じた送信電力情報を送信信号に
時分割多重化して子局に送信する第１の送信手段を備
え、子局は親局より受信した信号より送信電力情報を検
出する検出手段とこの検出手段により検出した送信電力
情報により無線通信回路の送信電力を切り替える切替手
段を備えるものである。The transmission power variable time division multiplex multiplex communication apparatus of the present invention comprises one master station and a plurality of slave stations that communicate with this master station wirelessly. In the time-division multi-directional multiplex communication system, the master station monitors the received electric fields from the plurality of slave stations, and the transmission power information corresponding to the received electric fields is time-division multiplexed. And transmitting to the slave station, the slave station detects the transmission power information from the signal received from the master station, and the transmission power of the wireless communication circuit based on the transmission power information detected by this detection means. It is provided with a switching means for switching.
【０００５】また、本発明の別の発明による送信電力可
変な時分割多方向多重通信装置は、親局は無線回線の回
線品質を監視する第２の監視手段と上記無線回線の品質
に応じた送信電力情報を送信信号に時分割多重化して子
局に送信する第２の送信手段を備え、子局は親局より受
信した信号より送信電力情報を検出する検出手段と、こ
の検出手段により検出した送信電力情報により無線通信
回路の送信電力を切り替える切替手段を備えるものであ
る。Further, in a time division multi-directional multiplex communication apparatus with variable transmission power according to another invention of the present invention, the master station responds to the second monitoring means for monitoring the line quality of the wireless line and the quality of the wireless line. A second transmitting means for time-division-multiplexing transmission power information into a transmission signal and transmitting it to the slave station, the slave station detecting the transmission power information from the signal received from the master station, and the detecting means. A switching unit that switches the transmission power of the wireless communication circuit according to the transmission power information is provided.
【０００６】[0006]
【作用】本発明においては、送信電力が回線品質に応じ
て制御される。In the present invention, the transmission power is controlled according to the line quality.
【０００７】[0007]
【実施例】図１は本発明の一実施例を示すブロック図で
ある。この図１において、１０は親局、１１は無線送受
信回路、１２はこの無線送受信回路１１の受信出力を入
力とする受信電界検出回路で、この受信電界検出回路１
２は各子局からの受信電界を監視する監視手段を構成し
ている。１３はこの受信電界検出回路１２の出力を入力
とし受信電界に応じた送信電力を判定する送信電力判定
回路、１４はこの送信電力判定回路１３の出力および信
号処理回路１５の出力を入力とする送信電力情報多重化
回路で、この送信電力情報多重化回路１４は送信電力判
定回路１３および無線送受信回路１１と協同して受信電
界に応じた送信電力情報を送信信号に時分割多重化して
子局に送信する送信手段を構成している。ここで、信号
処理回路１５は送信データを入力し受信データを出力す
る。FIG. 1 is a block diagram showing an embodiment of the present invention. In FIG. 1, reference numeral 10 is a master station, 11 is a radio transmission / reception circuit, and 12 is a reception electric field detection circuit that receives the reception output of the radio transmission / reception circuit 11 as an input.
Reference numeral 2 constitutes a monitoring means for monitoring the electric field received from each slave station. Reference numeral 13 is a transmission power determination circuit that receives the output of the reception electric field detection circuit 12 and determines the transmission power according to the reception electric field. Reference numeral 14 is a transmission that receives the output of the transmission power determination circuit 13 and the output of the signal processing circuit 15 as inputs. In the power information multiplex circuit, the transmission power information multiplex circuit 14 cooperates with the transmission power determination circuit 13 and the wireless transmission / reception circuit 11 to time-division multiplex the transmission power information according to the received electric field with the transmission signal and transmit it to the slave station. It constitutes a transmitting means for transmitting. Here, the signal processing circuit 15 inputs the transmission data and outputs the reception data.
【０００８】２０1・・・２０nはこの親局１０と無線を
利用して通信を行う複数の子局である。２１は送信デー
タを入力し受信データを出力する信号処理回路、２２は
この信号処理回路２１の出力を入力とする無線送信回
路、２３は無線受信回路、２４はこの無線受信回路２３
の出力を入力とする送信電力情報検出回路で、この送信
電力情報検出回路２４は親局１０より受信した信号より
送信電力情報を検出する検出手段を構成している。２５
はこの送信電力情報検出回路２４の出力を入力とし出力
によって無線送信回路２２を制御する送信電力切替回路
で、この送信電力切替回路２５は上記検出手段により検
出した送信電力情報により無線通信回路の送信電力を切
り替える切替手段を構成している。20 1 ... 20 n are a plurality of slave stations that communicate with the master station 10 wirelessly. Reference numeral 21 is a signal processing circuit that inputs transmission data and outputs reception data, 22 is a wireless transmission circuit that receives the output of the signal processing circuit 21, 23 is a wireless reception circuit, and 24 is this wireless reception circuit 23.
In the transmission power information detection circuit which receives the output of the above, the transmission power information detection circuit 24 constitutes detection means for detecting the transmission power information from the signal received from the master station 10. 25
Is a transmission power switching circuit that receives the output of the transmission power information detection circuit 24 and controls the wireless transmission circuit 22 by the output. The transmission power switching circuit 25 transmits the wireless communication circuit based on the transmission power information detected by the detecting means. It constitutes a switching means for switching the electric power.
【０００９】つぎにこの図１に示す実施例の動作を説明
する。まず、子局２０において図示しないデータ端末か
ら送られてきた送信データは信号処理回路２１で無線フ
レームの信号に変換される。この信号処理回路２１の出
力信号は無線送信回路２２に送出され、この無線送信回
路２２では無線周波数への変換が行われ、親局１０に向
けて信号が送出される。つぎに、親局１０において子局
２０からの送信信号が無線送受信回路１１で受信され
る。この無線送受信回路１１の出力信号は受信電界検出
回路１２で子局２０からの受信電界強度が検出される。
送信電力判定回路１３ではこの受信電界検出回路１２の
出力をもとに無線回線の品質をチェックし、子局２０か
ら親局１０への伝送可能な送信電力を判定する。信号処
理回路１５は受信信号をデータ端末インターフェースの
信号に変換する。Next, the operation of the embodiment shown in FIG. 1 will be described. First, transmission data sent from a data terminal (not shown) in the slave station 20 is converted into a radio frame signal by the signal processing circuit 21. The output signal of the signal processing circuit 21 is sent to the wireless transmission circuit 22, the wireless transmission circuit 22 performs conversion to a radio frequency, and the signal is sent to the master station 10. Next, in the master station 10, the transmission signal from the slave station 20 is received by the wireless transmission / reception circuit 11. With respect to the output signal of the wireless transmission / reception circuit 11, the reception electric field intensity from the slave station 20 is detected by the reception electric field detection circuit 12.
The transmission power determination circuit 13 checks the quality of the wireless line based on the output of the reception electric field detection circuit 12, and determines the transmission power that can be transmitted from the slave station 20 to the master station 10. The signal processing circuit 15 converts the received signal into a signal of the data terminal interface.
【００１０】そして、親局１０からの送信データは信号
処理回路１５で無線フレーム信号に変換された後、送信
電力情報多重化回路１４において送信電力判定回路１３
から送出される送信電力情報が時分割多重化される。こ
の送信電力情報は後述するように子局で使用される。送
信電力情報多重化回路１４の出力信号は親局１０の無線
送受信回路１１から送出されて子局２０の無線受信回路
２３で受信される。この子局２０の無線受信回路２３の
出力信号からは送信電力情報検出回路２４により親局１
０で多重化した送信電力情報が検出される。送信電力切
替回路２５は送信電力情報検出回路２４の出力信号によ
り無線送信回路２２の送信電力を切り替える。このた
め、子局から親局への送信電力は回線品質に応じて切り
替えられる。Then, the transmission data from the master station 10 is converted into a radio frame signal by the signal processing circuit 15 and then transmitted by the transmission power information multiplexing circuit 14 in the transmission power judging circuit 13
The transmission power information transmitted from the device is time division multiplexed. This transmission power information is used by the slave station as described later. The output signal of the transmission power information multiplexing circuit 14 is transmitted from the wireless transmission / reception circuit 11 of the master station 10 and received by the wireless reception circuit 23 of the slave station 20. From the output signal of the wireless reception circuit 23 of the slave station 20, the transmission power information detection circuit 24 detects the master station 1
The transmission power information multiplexed with 0 is detected. The transmission power switching circuit 25 switches the transmission power of the wireless transmission circuit 22 according to the output signal of the transmission power information detection circuit 24. Therefore, the transmission power from the slave station to the master station is switched according to the line quality.
【００１１】図２は本発明の他の実施例を示すブロック
図である。この図２において図１と同一符号のものは相
当部分を示し、親局１０における１６は無線送受信回路
１１の受信出力を入力とするパリティエラー検出回路
で、このパリティエラー検出回路１６は無線回線の回線
品質を監視する監視手段を構成している。１７はこのパ
リティエラー検出回路１６の出力を入力とする送信電力
判定回路、１８はこの送信電力判定回路１７の出力およ
び信号処理回路１１の出力を入力とする送信電力情報多
重化回路で、この送信電力情報多重化回路１８は送信電
力判定回路１７および無線送受信回路１１と協同して無
線回線の品質に応じた送信電力情報を送信信号に時分割
多重化して子局に送信する送信手段を構成している。FIG. 2 is a block diagram showing another embodiment of the present invention. In FIG. 2, the same reference numerals as those in FIG. 1 indicate corresponding parts, and 16 in the master station 10 is a parity error detection circuit which receives the reception output of the wireless transmission / reception circuit 11 as an input. It constitutes a monitoring means for monitoring the line quality. Reference numeral 17 denotes a transmission power determination circuit having the output of the parity error detection circuit 16 as an input, and 18 denotes a transmission power information multiplexing circuit having the outputs of the transmission power determination circuit 17 and the signal processing circuit 11 as inputs. The power information multiplex circuit 18 cooperates with the transmission power determination circuit 17 and the wireless transmission / reception circuit 11 to form a transmission unit that time-division multiplexes the transmission power information according to the quality of the wireless line into a transmission signal and transmits it to the slave station. ing.
【００１２】一方、子局２０における２６は信号処理回
路２１の出力信号を入力とし信号のパリティ情報を計数
するパリティ計数回路、２７はこのパリティ計数回路２
６の出力と信号処理回路２１の出力を入力としパリティ
計数回路２６の結果によってパリティ信号を付加するパ
リティ多重化回路、２８はこのパリティ多重化回路２７
の出力を入力とし無線周波数への変換を行う無線送信回
路である。On the other hand, 26 in the slave station 20 receives the output signal of the signal processing circuit 21 as an input and counts the parity information of the signal, and 27 represents this parity counting circuit 2.
The parity multiplexing circuit 28 receives the output of 6 and the output of the signal processing circuit 21 and adds a parity signal according to the result of the parity counting circuit 26.
It is a wireless transmission circuit which receives the output of the above as an input and performs conversion into a wireless frequency.
【００１３】つぎにこの図２に示す実施例の動作を説明
する。まず、子局２０において図示しないデータ端末か
ら送られてきた送信データは信号処理回路２１で無線フ
レームの信号に変換される。この信号処理回路２１の出
力信号はパリティ計数回路２６で計数され、その結果に
よってパリティ多重化回路２７でパリティ信号が付加さ
れ、無線送信回路２８に送出される。この無線送信回路
２８では無線周波数への変換が行われ、親局１０に向け
て信号が送出される。Next, the operation of the embodiment shown in FIG. 2 will be described. First, transmission data sent from a data terminal (not shown) in the slave station 20 is converted into a radio frame signal by the signal processing circuit 21. The output signal of the signal processing circuit 21 is counted by the parity counting circuit 26, the parity signal is added by the parity multiplexing circuit 27 according to the result, and the signal is sent to the wireless transmission circuit 28. The wireless transmission circuit 28 performs conversion to a wireless frequency and sends a signal to the master station 10.
【００１４】つぎに、親局１０において子局２０からの
送信信号が無線送受信回路１１で受信される。この無線
送受信回路１１の出力信号はパリティエラー検出回路１
６でパリティチェックが行われ、子局２０と親局１０の
間の無線回線で生じたパリティエラーが検出される。送
信電力判定回路１７ではパリティエラー検出回路１６の
出力をもとに無線回線の品質をチェックし、子局２０か
ら親局１０への伝送可能な送信電力を判定する。信号処
理回路１５は受信信号をデータ端末インターフェースの
信号に変換する。Next, in the master station 10, the transmission signal from the slave station 20 is received by the wireless transmission / reception circuit 11. The output signal of the wireless transmission / reception circuit 11 is the parity error detection circuit 1
A parity check is performed in 6 to detect a parity error that has occurred in the wireless line between the slave station 20 and the master station 10. The transmission power determination circuit 17 checks the quality of the wireless line based on the output of the parity error detection circuit 16 and determines the transmission power that can be transmitted from the slave station 20 to the master station 10. The signal processing circuit 15 converts the received signal into a signal of the data terminal interface.
【００１５】そして、親局１０からの送信データは信号
処理回路１５で無線フレーム信号に変換された後、送信
電力情報多重化回路１８において送信電力判定回路１７
から送出される送信電力情報が時分割多重化される。こ
の送信電力情報は後述するように子局で使用される。送
信電力情報多重化回路１８の出力信号は親局１０の無線
送受信回路１１から送出されて子局２０の無線受信回路
２３で受信される。この子局２０の無線受信回路２３の
出力信号からは送信電力情報検出回路２４により親局１
０で多重化した送信電力情報が検出される。送信電力切
替回路２５は送信電力情報検出回路２４の出力信号によ
り無線送信回路２８の送信電力を切り替える。このた
め、子局から親局への送信電力は回線品質に応じて切り
替えられる。Then, the transmission data from the master station 10 is converted into a radio frame signal by the signal processing circuit 15, and then the transmission power information multiplexing circuit 18 transmits the transmission power judging circuit 17 thereto.
The transmission power information transmitted from the device is time division multiplexed. This transmission power information is used by the slave station as described later. The output signal of the transmission power information multiplexing circuit 18 is transmitted from the wireless transmission / reception circuit 11 of the master station 10 and received by the wireless reception circuit 23 of the slave station 20. From the output signal of the wireless reception circuit 23 of the slave station 20, the transmission power information detection circuit 24 detects the master station 1
The transmission power information multiplexed with 0 is detected. The transmission power switching circuit 25 switches the transmission power of the wireless transmission circuit 28 according to the output signal of the transmission power information detection circuit 24. Therefore, the transmission power from the slave station to the master station is switched according to the line quality.
【００１６】[0016]
【発明の効果】以上説明したように本発明は、送信電力
が回線損失に応じて制御されるようにしたので、無線回
線の回線品質が良いときにはできるだけ送信電力を低く
して消費電力を小さくし、また無線回線の回線品質が劣
化した場合にも回線品質に応じた送信電力を選ぶことに
より、伝送能力は保たれるという効果がある。As described above, according to the present invention, the transmission power is controlled according to the line loss. Therefore, when the line quality of the wireless line is good, the transmission power should be as low as possible to reduce the power consumption. In addition, even when the line quality of the wireless line is deteriorated, the transmission capacity is maintained by selecting the transmission power according to the line quality.
【図１】本発明の一実施例を示すブロック図である。FIG. 1 is a block diagram showing an embodiment of the present invention.
【図２】本発明の他の実施例を示すブロック図である。FIG. 2 is a block diagram showing another embodiment of the present invention.
１０ 親局 １１ 無線送受信装置 １２ 受信電界検出回路 １３ 送信電力判定回路 １４ 送信電力情報多重化回路 １６ パリティエラー検出回路 １７ 送信電力判定回路 １８ 送信電力情報多重化回路 ２０1〜２０n 子局 ２２ 無線送信回路 ２３ 無線受信回路 ２４ 送信電力情報検出回路 ２５ 送信電力切替回路 ２６ パリティ計数回路 ２７ パリティ多重化回路10 the master station 11 a radio transceiver 12 received field detecting circuit 13 transmits power decision circuit 14 sends power information multiplexing circuit 16 parity error detection circuit 17 transmit power decision circuit 18 sends power information multiplexing circuit 20 1 to 20 n slave station 22 wirelessly Transmission circuit 23 Radio reception circuit 24 Transmission power information detection circuit 25 Transmission power switching circuit 26 Parity counting circuit 27 Parity multiplexing circuit
Claims (2)
て通信を行う複数の子局とから構成される時分割多方向
多重通信システムにおいて、前記親局は前記複数の子局
からの受信電界を監視する第１の監視手段と、前記受信
電界に応じた送信電力情報を送信信号に時分割多重化し
て子局に送信する第１の送信手段を備え、前記子局は前
記親局より受信した信号より送信電力情報を検出する検
出手段とこの検出手段により検出した送信電力情報によ
り無線通信回路の送信電力を切り替える切替手段を備え
ることを特徴とする送信電力可変な時分割多方向多重通
信装置。1. A time division multi-directional multiplex communication system comprising one master station and a plurality of slave stations communicating with the master station wirelessly, wherein the master station is the plurality of slave stations. And a first transmitting means for time-division-multiplexing transmission power information corresponding to the received electric field into a transmission signal and transmitting the time-division-multiplexed transmission signal to the slave station. A transmission power variable time division multiplex characterized by comprising detection means for detecting transmission power information from a signal received from a master station and switching means for switching transmission power of a wireless communication circuit according to the transmission power information detected by this detection means. Directional multiplexing device.
び第１の送信手段に代えて親局は無線回線の回線品質を
監視する第２の監視手段および前記無線回線の品質に応
じた送信電力情報を送信信号に時分割多重化して子局に
送信する第２の送信手段を備えたことを特徴とする送信
電力可変な時分割多方向多重通信装置。2. The method according to claim 1, wherein the master station replaces the first monitoring means and the first transmitting means with a second monitoring means for monitoring the line quality of the wireless line and a transmission according to the quality of the wireless line. A time-division multidirectional communication apparatus with variable transmission power, comprising second transmitting means for time-division-multiplexing power information into a transmission signal and transmitting it to a slave station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23763892A JPH0669898A (en) | 1992-08-14 | 1992-08-14 | Time division multi-direction multiplex communication device capable of varying transmission power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23763892A JPH0669898A (en) | 1992-08-14 | 1992-08-14 | Time division multi-direction multiplex communication device capable of varying transmission power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0669898A true JPH0669898A (en) | 1994-03-11 |
Family
ID=17018296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23763892A Pending JPH0669898A (en) | 1992-08-14 | 1992-08-14 | Time division multi-direction multiplex communication device capable of varying transmission power |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0669898A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07336291A (en) * | 1994-06-07 | 1995-12-22 | Nec Corp | Transmission output controller in mobile communication |
-
1992
- 1992-08-14 JP JP23763892A patent/JPH0669898A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07336291A (en) * | 1994-06-07 | 1995-12-22 | Nec Corp | Transmission output controller in mobile communication |
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