JPS6339173B2 - - Google Patents
Info
- Publication number
- JPS6339173B2 JPS6339173B2 JP55147324A JP14732480A JPS6339173B2 JP S6339173 B2 JPS6339173 B2 JP S6339173B2 JP 55147324 A JP55147324 A JP 55147324A JP 14732480 A JP14732480 A JP 14732480A JP S6339173 B2 JPS6339173 B2 JP S6339173B2
- Authority
- JP
- Japan
- Prior art keywords
- station
- mobile
- mobile station
- stations
- base stations
- 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
Links
- 238000004891 communication Methods 0.000 claims description 31
- 238000013459 approach Methods 0.000 description 23
- 230000005540 biological transmission Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000004913 activation Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Description
【発明の詳細な説明】
本発明は移動無線通信方式に係り、移動局相互
間あるいは移動局と統制局との間で高品質、高能
率に無線通信を行ない得る移動無線通信方式に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mobile radio communication system, and more particularly, to a mobile radio communication system that allows high quality and highly efficient radio communication between mobile stations or between a mobile station and a control station.
従来の移動無線通信方式では、広範囲に亘つて
移動無線通信を可能とするため、複数の基地局を
配置し、これらをアプローチ回線で単一の統制局
に接続するものがあつたが、この場合、複数の基
地局は一対の無線周波数で運用せざるを得ない場
合があつた。かかる従来の移動無線通信方式にお
いて、或る基地局の無線通信範囲の一部と他の基
地局の無線通信範囲の一部とが重複する（オーバ
ーリーチする）場合、このオーバーリーチゾーン
の移動局から他の移動局を呼出す場合又はオーバ
ーリーチゾーンにある他の移動局を呼出す場合、
オーバーリーチゾーンにある移動局は複数の基地
局から同一周波数の電波を受信することになる
が、基地局の周波数の偏差により可聴周波数のビ
ート音が聞こえて通信の妨害となることがある。
さらに移動局から送信された信号は通常異なる伝
搬時間経過後、上記或る基地局と他の基地局とで
夫々受信された後、アプローチ回線を介して統制
局へ伝送されていた。従つて、統制局に供給され
て合成される或る基地局からの信号と他の基地局
からの信号は、上記伝搬時間の相違や、基地局自
体でのフイルタ回路の信号遅延特性の相違などに
より位相差が生じ、甚だしい場合は180゜の位相差
が生じて合成により上記両入力信号が相殺されて
しまう場合があるという欠点があつた。 In conventional mobile radio communication systems, in order to enable mobile radio communication over a wide range, multiple base stations were installed and these were connected to a single control station via an approach line, but in this case In some cases, multiple base stations had to operate on a pair of radio frequencies. In such conventional mobile radio communication systems, when a part of the radio communication range of a certain base station overlaps (overreaches) with a part of the radio communication range of another base station, mobile stations in this overreach zone When calling another mobile station from or when calling another mobile station located in the overreach zone,
A mobile station in an overreach zone will receive radio waves of the same frequency from multiple base stations, but due to frequency deviations of the base stations, an audible beat sound may be heard, which may interfere with communication.
Further, signals transmitted from a mobile station are normally received by the base station and another base station after different propagation times, and then transmitted to the control station via the approach line. Therefore, the signals from one base station and the signals from other base stations that are supplied to the control station and combined are subject to differences in propagation time, signal delay characteristics of the filter circuit in the base station itself, etc. This has the disadvantage that a phase difference occurs, and in extreme cases, a phase difference of 180° may occur, and the two input signals may cancel each other out during synthesis.
本発明の目的は、複数の基地局に対して、移動
局からの信号周波数受信の有無を、単一の統制局
により時分割的に監視し、最初に信号受信を行な
つた基地局から順番に、無線通信を行なう相手方
の移動局の検出を時分割的に行なうことにより、
オーバーリーチゾーンに位置する移動局と他の移
動局又は統制局との間の相互通信においても、高
品質に通信できる移動無線通信方式を提供するに
ある。 An object of the present invention is to monitor a plurality of base stations in a time-sharing manner by a single control station to determine whether or not a signal frequency is being received from a mobile station. In addition, by time-divisionally detecting the mobile station of the other party performing wireless communication,
It is an object of the present invention to provide a mobile radio communication system that enables high-quality communication even in mutual communication between a mobile station located in an overreach zone and another mobile station or a control station.
本発明は、移動局との間で無線周波数を送受信
する複数の基地局を単一の統制局に接続し、統制
局の制御の下に複数の基地局に対して、移動局か
らの信号の受信の有無の監視を時分割的に順次行
ない、任意の第１の移動局との間で受信状態にあ
る一又は二以上の基地局のうちの一の第１の基地
局を検出した時、複数の基地局のうち第１の移動
局が通話を希望する第２の移動局の呼出しを、第
１の基地局から順次時分割的に各基地局毎に行な
わせ、これにより応答した第２の移動局よりの信
号周波数を最初に受信した基地局と第１の基地局
との間に統制局を経た通話路の設定を行なうよう
構成することにより、上記欠点を除去したもので
あり、以下図面と共にその一実施例につき説明す
る。 The present invention connects multiple base stations that transmit and receive radio frequencies to and from mobile stations to a single control station, and transmits signals from the mobile station to the multiple base stations under the control of the control station. When the presence or absence of reception is sequentially monitored in a time-division manner and one of the one or more base stations in reception state with an arbitrary first mobile station is detected, A first mobile station among a plurality of base stations calls a second mobile station with which it wishes to make a call, and the first base station sequentially calls each base station in a time-division manner, thereby making it possible to call a second mobile station that has responded. This method eliminates the above disadvantages by establishing a communication path via a control station between the base station that first received the signal frequency from the mobile station and the first base station. An embodiment thereof will be described with reference to the drawings.
第１図は本発明になる移動無線通信方式の一実
施例の概略構成図、第２図は第１図の移動局の一
実施例の概略構成図、第３図は第１図の統制局の
一実施例の構成図を示す。第１図においては、Ａ
は統制局で、アプローチ回線（有線又は異周波の
無線）１ａ，１ｂを介して基地局B1に接続され
る一方、アプローチ回線２ａ，２ｂを介して基地
局B2に接続されている。基地局B1はアプローチ
回線１ａに接続されている送信機３ａ、アプロー
チ回線１ｂに接続されている受信機３ｂ、空中線
共用器４、及びアンテナ５よりなる。同様にし
て、基地局B2はアプローチ回線２ａに接続され
ている送信機６ａ、アプローチ回線２ｂに接続さ
れている受信機６ｂ、空中線共用器７及びアンテ
ナ８よりなる。これにより、統制局Ａは基地局
B1，B2の送受信機の接断制御と選択呼出信号の
伝達、通話路の設定を行なう。また統制局Ａは基
地局B1，B2の集中制御機能を有している。 FIG. 1 is a schematic block diagram of an embodiment of the mobile radio communication system according to the present invention, FIG. 2 is a schematic block diagram of an embodiment of the mobile station of FIG. 1, and FIG. 3 is a control station of the control station of FIG. The block diagram of one Example is shown. In Figure 1, A
is a control station, which is connected to base station B 1 via approach lines (wired or wireless at different frequencies) 1a and 1b, and connected to base station B 2 via approach lines 2a and 2b. The base station B 1 includes a transmitter 3 a connected to the approach line 1 a, a receiver 3 b connected to the approach line 1 b, an antenna duplexer 4, and an antenna 5. Similarly, the base station B 2 includes a transmitter 6a connected to the approach line 2a, a receiver 6b connected to the approach line 2b, an antenna duplexer 7, and an antenna 8. As a result, control station A becomes the base station
Controls the connection/disconnection of the transmitters/receivers of B 1 and B 2 , transmits selective call signals, and sets communication paths. Control station A also has a centralized control function for base stations B 1 and B 2 .
また基地局B1，B2は半複信で動作し、基地局
B1はゾーンZ1内にある移動局との通信を行ない、
基地局B2はゾーンZ2内にある移動局との通信を
行なう。Z12は上記ゾーンZ1とZ2が重複するオー
バーリーチゾーンを示す。 In addition, base stations B 1 and B 2 operate in half-duplex mode.
B 1 communicates with a mobile station in zone Z 1 ,
Base station B2 communicates with mobile stations located within zone Z2 . Z12 indicates an overreach zone where zones Z1 and Z2 overlap.
M1，M2は夫々移動局で、第２図に示す如き構
成とされ、２波の単信で動作する。第２図中、１
０は送受切換器で、その共通端子がアンテナ９に
接続され、その固定端子１０ａ，１０ｂのうち通
常は固定端子１０ａに接続されている。固定端子
１０ａは受信機１１を介してトランスポンダ１２
に接続され、一方、固定端子１０ｂは送信機１４
の出力端に接続されている。トランスポンダ１２
は、着信通知器１３及び送信機１４の各入力端に
接続されている。トランスポンダ１２は基地局の
呼出信号が自局番号と一致する時、自動的に応答
信号を送出する機能を持つ。また第２図中、１５
は音声信号器よりの音声及び相手局呼出信号入力
端子で、送信機１４の入力端に接続されている。 M 1 and M 2 are mobile stations, each having a configuration as shown in FIG. 2, and operating on a two-wave simplex. In Figure 2, 1
0 is a transmission/reception switch whose common terminal is connected to the antenna 9, and which is normally connected to the fixed terminal 10a of its fixed terminals 10a and 10b. The fixed terminal 10a is connected to the transponder 12 via the receiver 11.
while the fixed terminal 10b is connected to the transmitter 14
connected to the output end of the transponder 12
are connected to each input terminal of the incoming call notification device 13 and the transmitter 14. The transponder 12 has a function of automatically transmitting a response signal when the base station's calling signal matches its own station number. Also, in Figure 2, 15
is an input terminal for voice and call signals from the voice signal device, and is connected to the input terminal of the transmitter 14.
統制局Ａは第３図に示す如き構成とされてお
り、第１スキヤナ１６のスイツチ１６ａはアプロ
ーチ回線１ａ，２ａ，２９ａに接続され、スイツ
チ１６ｂはアプローチ回線１ｂ，２ｂ，２９ｂに
接続され、他方、第２スキヤナ２２のスイツチ２
２ａと２２ｂもチヤネル接続器２５を介してアプ
ローチ回線１ａ，２ａ及び２９ａと１ｂ，２ｂ及
び２９ｂに接続されている（ただし、アプローチ
回線２９ａ，２９ｂは第１図では図示せず）。第
１スキヤナ１６はスイツチ１６ａ，１６ｂが待受
時に一定時間ずつ自動的に巡回的に切換え接続さ
れる構成とされて基地局B1，B2と移動局M1，
M2との間の通話状態の有無を監視し、一方、第
２スキヤナ２２は第１スキヤナ１６の切換停止し
たアプローチ回線（チヤネル）から走査を始める
よう構成されている。 The control station A has the configuration as shown in FIG. , switch 2 of the second scanner 22
2a and 22b are also connected to approach lines 1a, 2a and 29a and 1b, 2b and 29b via channel connector 25 (however, approach lines 29a and 29b are not shown in FIG. 1). The first scanner 16 is configured such that switches 16a and 16b are automatically switched and connected cyclically for a certain period of time during standby, and the switches 16a and 16b are connected to the base stations B 1 and B 2 and the mobile station M 1 ,
The second scanner 22 is configured to monitor the presence or absence of a call state with M2 , and to start scanning from the approach line (channel) of the first scanner 16 that has been switched off.
いま、第１図に示す如く、ゾーンZ1内に位置す
る移動局M1とオーバーリーチゾーンZ12内に位置
する移動局M2との間で通話する場合の動作につ
き説明する。統制局Ａは待受時、第１スキヤナ１
６によりアプローチ回線１ａ，１ｂを介しての基
地局B1との接続が一定時間Ｔ行なわれ（第４図
Ａにハイレベルで示す時間）、しかる後にアプロ
ーチ回線２ａ，２ｂを介しての基地局B2との接
続が一定時間Ｔ行なわれ、（第４図Ｂにハイレベ
ルで示す期間）、そしてその後アプローチ回線２
９ａ，２９ｂを介しての基地局（第１図には図示
せず）との接続が一定時間Ｔ行なわれ（第４図Ｃ
にハイレベルで示す期間）、以下これらが繰り返
して行なわれる。 Now, as shown in FIG. 1, the operation when a mobile station M1 located in zone Z1 and mobile station M2 located in overreach zone Z12 make a call will be described. When the control station A is on standby, the first scanner 1
6, the connection with the base station B 1 via the approach lines 1a and 1b is performed for a certain period of time T (the time indicated by the high level in FIG. Connection with B 2 is made for a certain period of time T (period shown as high level in Figure 4 B), and then the approach line 2
9a and 29b are connected to the base station (not shown in FIG. 1) for a certain period of time T (FIG. 4 C).
(the period indicated by the high level), these steps are repeated thereafter.
しかして、移動局M1より発信信号が送信され
ると、基地局B1のアンテナ５、空中線共用器４
を介して受信機３ｂにより受信され、第１スキヤ
ナ１６がアプローチ回線１ａ，１ｂに接続された
時、この受信信号が受信機３ｂよりアプローチ回
線１ｂを介して統制局Ａ内の第３図に示すスイツ
チ１６ｂを経てレジスタ１７に記憶されると同時
に、第１スキヤナ１６のスキヤナ動作が停止され
る。この時通話路接続器２６及びチヤネル接続器
２５はいずれも非接続状態にある。レジスタ１７
には相手局M2の呼出信号が記憶され、これが、
レジスタ２７の記憶内容と不一致回路１８にて比
較されるが、初期状態ではレジスタ２７には何も
記憶されていないから、レジスタ１７及び２７の
両記憶内容は一致せず、この時不一致回路１８よ
りゲート回路１９にゲートを「開」状態とする信
号が供給される。 When a transmission signal is transmitted from the mobile station M1 , the antenna 5 of the base station B1 and the antenna duplexer 4
When the first scanner 16 is connected to the approach lines 1a and 1b, this received signal is transmitted from the receiver 3b to the control station A via the approach line 1b as shown in FIG. At the same time that the data is stored in the register 17 via the switch 16b, the scanner operation of the first scanner 16 is stopped. At this time, both the communication path connector 26 and the channel connector 25 are in a disconnected state. register 17
The calling signal of the other station M2 is stored, and this is
The stored contents of the register 27 are compared with the mismatch circuit 18, but since nothing is stored in the register 27 in the initial state, the stored contents of both registers 17 and 27 do not match, and at this time, the mismatch circuit 18 A signal is supplied to the gate circuit 19 to turn the gate into an "open" state.
これにより、レジスタ１７の記憶内容はゲート
回路１９を通して信号内容転送器２０によりレジ
スタ２１に転送されて記憶される一方、第２スキ
ヤナ２２の起動信号として第２スキヤナ２２に印
加される。またこれと同時に、信号転送器２０よ
りチヤネル接続器２５に接続命令信号が送出さ
れ、アプローチ回線１ａ，２ａ，２９ａと第２ス
キヤナ２２内のスイツチ２２ａの各端子との接
続、並びにアプローチ回線１ｂ，２ｂ，２９ｂと
スイツチ２２ｂの各端子との接続が行なわれる。 As a result, the stored contents of the register 17 are transferred to the register 21 by the signal content transfer device 20 through the gate circuit 19 and stored therein, while being applied to the second scanner 22 as an activation signal for the second scanner 22. At the same time, a connection command signal is sent from the signal transfer device 20 to the channel connector 25, and the approach lines 1a, 2a, 29a are connected to each terminal of the switch 22a in the second scanner 22, and the approach lines 1b, 2b, 29b and each terminal of switch 22b are connected.
第２スキヤナ２２は第１スキヤナ１６のストツ
プチヤネルから走査を始めるよう構成されている
ため、まずアプローチ回線１ａ，１ｂを介して基
地局B1に接続された状態で基地局B1の送信機３
ａを起動し、移動局M2の呼出信号を送出させる。
この時、移動局M2は第１図に示す如くオーバー
リーチゾーンZ12内に位置しているため、基地局
B1からの自己への呼出信号を第２図に示す受信
機１１で受信し、トランスポンダ１２が自己への
呼出信号であることを検出すると同時に、送受切
換器１０を端子１０ｂ側に切換接続し、かつ、着
信通知器１３により着信があつた旨を音等により
通知した後、送信機１４を動作させ、送信機１
４、切換スイツチ１０を経てアンテナ９より応答
信号を送信する。この移動局M2からの応答信号
は、移動局M2がオーバーリーチゾーンZ12内に位
置するので、基地局B1，B2により夫々受信され
るが、その受信時点では統制局Ａ内の第３図に示
す第２スキヤナ２２がまだアプローチ回線１ａ，
１ｂに接続されている状態にあるようにスキヤニ
ング時間が定められているので、基地局B1によ
り受信された応答信号が第２スキヤナ２２を介し
て第３図に示す統制局Ａ内のレジスタ２３に記憶
された後、一致回路２４でレジスタ２１の記憶内
容と比較される。 Since the second scanner 22 is configured to start scanning from the stop channel of the first scanner 16, first the transmitter 3 of the base station B 1 is connected to the base station B 1 via the approach lines 1a and 1b .
a is activated and causes it to send out a paging signal for mobile station M2 .
At this time, since the mobile station M2 is located within the overreach zone Z12 as shown in Fig. 1, the base station
The receiver 11 shown in FIG. 2 receives the calling signal from B 1 to the self, and at the same time the transponder 12 detects that it is the calling signal to the self, it switches the transmitter/receiver switch 10 to the terminal 10b side. , and after the incoming call notification device 13 notifies the incoming call by sound or the like, the transmitter 14 is operated, and the transmitter 1
4. Transmit a response signal from the antenna 9 via the changeover switch 10. This response signal from mobile station M 2 is received by base stations B 1 and B 2, respectively, since mobile station M 2 is located within overreach zone Z 12 , but at the time of reception, the response signal is received by base stations B 1 and B 2 , respectively. The second scanner 22 shown in FIG.
Since the scanning time is set so that the base station B1 is connected to the control station A, the response signal received by the base station B1 is transmitted via the second scanner 22 to the register 23 in the control station A shown in FIG. After being stored in the register 21, the matching circuit 24 compares the stored contents with the register 21.
この場合は、レジスタ２１及び２３の記憶内容
は共に等しいから、一致回路２４より一致信号が
出力され、第２スキヤナ２２のスキヤニング動作
を停止せしめると同時に、通話路接続器２６によ
り通話路の接続を行なわせる。従つて、移動局
M2がオーバーリーチゾーンZ12内に位置する上記
の場合には、B1の送信起動シーケンスのとき応
答を得、応答を得た基地局B1の送受信機３ａ，
３ｂを動作させ、統制局Ａで送受通話路を折り返
す（移動局M2がゾーンZ1内に位置する時も同
様）。これにより、伝送遅延差、信号の重なりな
どにより生ずる信号歪の発生を抑圧し得て、高品
質の移動無線通路ができる。なお、第５図Ａは第
２スキヤナ２２がアプローチ回線１ａ，１ｂに接
続されている時の、同図Ｂはアプローチ回線２
ａ，２ｂに接続されている時の、同図Ｃはアプロ
ーチ回線２９ａ，２９ｂに接続されている時の各
送受信状態を示し、同図Ａ〜Ｃの期間Ｔ（これは
第４図Ａ〜Ｃ中の期間Ｔと等しい）中、斜線部分
が呼出信号送信期間を示し、また期間Ｔ中、残り
の期間が移動局M1，M2のトランスポンダからの
応答信号受信期間を示す。 In this case, since the stored contents of the registers 21 and 23 are the same, a coincidence signal is output from the coincidence circuit 24, and at the same time, the scanning operation of the second scanner 22 is stopped, and at the same time, the communication path is connected by the communication path connector 26. Let them do it. Therefore, the mobile station
In the above case where M 2 is located within the overreach zone Z 12 , a response is obtained during the transmission activation sequence of B 1 , and the transceiver 3a of the base station B 1 that received the response,
3b, and the transmission/reception channel is turned back at the control station A (the same applies when the mobile station M2 is located in the zone Z1 ). As a result, signal distortion caused by transmission delay differences, signal overlap, etc. can be suppressed, and a high-quality mobile radio path can be achieved. Note that FIG. 5A shows the approach line 2 when the second scanner 22 is connected to the approach lines 1a and 1b, and FIG.
C in the figure shows each transmission/reception state when connected to the approach lines 29a and 29b, and the period T in A to C in the figure (this corresponds to the period T in A to C in the figure 4). (equivalent to the period T in the middle), the shaded portion indicates the paging signal transmission period, and the remaining period during the period T indicates the response signal reception period from the transponders of the mobile stations M 1 and M 2 .
なお、移動局M1，M2がゾーンZ1，Z2内に各々
位置する時には、基地局B1，B2が動作し、統制
局Ａは双方の通話路を接続することは、上記の説
明より明らかである。 Note that when mobile stations M 1 and M 2 are located in zones Z 1 and Z 2 respectively, base stations B 1 and B 2 operate and control station A connects the communication paths of both, as described above. It is clear from the explanation.
また、統制局Ａからの手入力あるときは、第３
図に示す入力端子２８より送信信号がレジスタ２
７に入力され、第１スキヤナ１６をスキヤニング
動作させると同時に、通話路接続器２６が非接続
状態にあるようにすることにより、統制局Ａと手
入力により呼出した移動局との間で通話路を設定
することもできる。 Also, when there is manual input from control station A, the third
The transmission signal is sent to the register 2 from the input terminal 28 shown in the figure.
7, the first scanner 16 is operated for scanning, and at the same time the communication path connector 26 is in a disconnected state, thereby establishing a communication path between the control station A and the mobile station called by manual input. You can also set
更に、基地局の数は３以上であつても同様の処
理ができ、またアプローチ回線は統制局Ａより直
列にのばしてもよい。 Furthermore, the same processing can be performed even if the number of base stations is three or more, and the approach line may be extended in series from the control station A.
上述の如く、本発明によれば、複数の基地局の
うち第１の移動局からの信号の受信状態にあると
最初に検出した基地局から順番に、上記第１の移
動局が通話を希望する第２の移動局との送受信を
行ない得る移動局の検出を統制局を介して行なう
ようにしたため、複数の基地局のオーバーリーチ
ゾーン内に位置する移動局と他の移動局との間で
の相互通信の際にも、統制局を経た通話路の設定
により信号の重なりや伝送遅延差などにより生ず
ることのある信号歪の発生を抑圧し得て高品質に
無線通信することができ、また上記オーバーリー
チゾーン内に位置する移動局と統制局との間でも
高品質な無線通信ができ、更に一つのゾーンのみ
の移動局間通話の他に、他のゾーンのみの移動局
間通話をもできるので、電波の有効利用をはかる
ことができ、また更に基地局の周波数安定度を従
来に比し下げることもできる。 As described above, according to the present invention, among a plurality of base stations, the first mobile station requests a call in order from the base station that first detects that it is in a state of receiving a signal from the first mobile station. Since the control station detects a mobile station that can perform transmission and reception with a second mobile station, communication between a mobile station located within the overreach zone of multiple base stations and other mobile stations is Even during mutual communication, by setting a communication path through a control station, signal distortion that may occur due to signal overlap or transmission delay differences can be suppressed, and high-quality wireless communication can be achieved. High-quality wireless communication is possible even between mobile stations located within the overreach zone and the control station, and in addition to calls between mobile stations in one zone only, calls between mobile stations only in other zones are also possible. Therefore, it is possible to make effective use of radio waves, and it is also possible to lower the frequency stability of the base station compared to the conventional method.
第１図は本発明方式の一実施例を示す概略構成
図、第２図は第１図の移動局の一実施例を示す概
略構成図、第３図は第１図の統制局の一実施例を
示す構成図、第４図Ａ〜Ｃは夫々統制局の待受時
のスキヤニング動作を説明するタイムチヤート、
第５図Ａ〜Ｃは夫々統制局の呼出時のスキヤニン
グ動作を説明するタイムチヤートである。
１ａ，１ｂ，２ａ，２ｂ，２９ａ，２９ｂ……
アプローチ回線、３ａ，６ａ，１４……送信機、
３ｂ，６ｂ，１１……受信機、１０……送受切換
器、１２……トランスポンダ、１６……第１スキ
ヤナ、１９……ゲート回路、２２……第２スキヤ
ナ、２５……チヤネル接続器、２６……通話路接
続器、Ａ……統制局、B1，B2……基地局、M1，
M2……移動局。
FIG. 1 is a schematic block diagram showing an embodiment of the system of the present invention, FIG. 2 is a schematic block diagram showing an embodiment of the mobile station of FIG. 1, and FIG. 3 is an implementation of the control station of FIG. 1. A configuration diagram showing an example, and FIGS. 4A to 4C are time charts explaining the scanning operation during standby of the control station, respectively.
FIGS. 5A to 5C are time charts illustrating the scanning operation when the control station calls. 1a, 1b, 2a, 2b, 29a, 29b...
Approach line, 3a, 6a, 14...transmitter,
3b, 6b, 11... Receiver, 10... Transmission/reception switch, 12... Transponder, 16... First scanner, 19... Gate circuit, 22... Second scanner, 25... Channel connector, 26 ...Communication path connector, A...Control station, B1 , B2 ...Base station, M1 ,
M2 ...Mobile station.
Claims (1)
の基地局を単一の統制局に接続し、該統制局の制
御の下に該複数の基地局に対して、移動局からの
信号の受信の有無の監視を時分割的に順次行な
い、任意の第１の移動局との間で受信状態にある
一又は二以上の基地局のうちの一の第１の基地局
を検出した時、上記複数の基地局のうち該第１の
移動局が通話を希望する第２の移動局の呼出し
を、該第１の基地局から順次時分割的に各基地局
毎に行なわせ、これにより応答した該第２の移動
局よりの信号を最初に受信した基地局と該第１の
基地局との間に上記統制局を経た通話路の設定を
行ない、該第１及び第２の移動局間で無線通信を
行なうよう構成したことを特徴とする移動無線通
信方式。1 A plurality of base stations that transmit and receive radio frequencies to and from mobile stations are connected to a single control station, and under the control of the control station, the plurality of base stations receive signals from the mobile station. The presence or absence of the mobile station is monitored sequentially in a time-division manner, and when one of the first base stations among one or more base stations in reception state with an arbitrary first mobile station is detected, the above-mentioned Among the plurality of base stations, the first mobile station calls a second mobile station with which the first mobile station desires to make a call, and the first base station sequentially calls each base station in a time-sharing manner, thereby responding to the call. A communication path via the control station is set up between the base station that first received the signal from the second mobile station and the first base station, and between the first and second mobile stations. A mobile wireless communication system characterized by being configured to perform wireless communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55147324A JPS5769945A (en) | 1980-10-21 | 1980-10-21 | Mobile radio communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55147324A JPS5769945A (en) | 1980-10-21 | 1980-10-21 | Mobile radio communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5769945A JPS5769945A (en) | 1982-04-30 |
| JPS6339173B2 true JPS6339173B2 (en) | 1988-08-03 |
Family
ID=15427600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55147324A Granted JPS5769945A (en) | 1980-10-21 | 1980-10-21 | Mobile radio communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5769945A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59140734A (en) * | 1983-01-31 | 1984-08-13 | Nippon Telegr & Teleph Corp <Ntt> | Call connecting method of mobile communication system |
| JPH0761178B2 (en) * | 1989-03-14 | 1995-06-28 | 株式会社富士通ゼネラル | Cordless telephone system |
-
1980
- 1980-10-21 JP JP55147324A patent/JPS5769945A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5769945A (en) | 1982-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5179721A (en) | Method for inter operation of a cellular communication system and a trunking communication system | |
| EP0631417B1 (en) | Radio telephone system control apparatus and method | |
| US4635285A (en) | Communication system with voice priority for remote stations | |
| RU2154344C2 (en) | Synchronization of connections while communicating in mobile communication systems | |
| KR950013162B1 (en) | Mobile communication system | |
| JPS647706B2 (en) | ||
| US4661970A (en) | Cordless telephone system | |
| EP0218450B2 (en) | Control system of a radio telephone apparatus | |
| JPS58191542A (en) | Mobile communication controlling system | |
| JPS6339173B2 (en) | ||
| JPS6351419B2 (en) | ||
| JPS6359636B2 (en) | ||
| JP2534715B2 (en) | Position notification signal transmission method for mobile communication system | |
| KR0135963B1 (en) | Radio telephone system | |
| JPH0347019B2 (en) | ||
| JPS6094545A (en) | Mobile radio communication system | |
| JP2906424B2 (en) | Regional disaster prevention radio system | |
| JP2913324B2 (en) | Wireless relay system | |
| JP2564680B2 (en) | Mobile radio base station system | |
| JP2614530B2 (en) | Cordless telephone equipment | |
| JP2823059B2 (en) | Train wireless communication system | |
| JP2001119339A (en) | Radio communication system and radio communication method | |
| JPS6070875A (en) | Facsimile equipment | |
| JPS63179630A (en) | Mobile radio system | |
| JPH0532933B2 (en) |