JPS58191542A - Mobile communication controlling system - Google Patents

Mobile communication controlling system

Info

Publication number
JPS58191542A
JPS58191542A JP57073817A JP7381782A JPS58191542A JP S58191542 A JPS58191542 A JP S58191542A JP 57073817 A JP57073817 A JP 57073817A JP 7381782 A JP7381782 A JP 7381782A JP S58191542 A JPS58191542 A JP S58191542A
Authority
JP
Japan
Prior art keywords
base station
channel
control
station
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.)
Granted
Application number
JP57073817A
Other languages
Japanese (ja)
Other versions
JPS6355825B2 (en
Inventor
Takanori Utano
歌野　孝法
Hiroshi Inaba
洋 稲葉
Kazuo Nakagawa
一夫 中川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP57073817A priority Critical patent/JPS58191542A/en
Publication of JPS58191542A publication Critical patent/JPS58191542A/en
Publication of JPS6355825B2 publication Critical patent/JPS6355825B2/ja
Granted legal-status Critical Current

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To attain the constitution of an economical base system, by providing a channel in the unit of radio zones as to a transmission system of a mobile station. CONSTITUTION:A control signal transmitted from a control station to each base station includes a synchronizing signal representing a time slot informing the channel information from each base station. In each station, when this synchronizing signal is detected at a synchronizing signal detector 13, the location of a prescribed time slot is recognized by a counter 14 started at the same time as the start of the detector 13 by starting a bit counter 14. Thus, a signal output gate 15 is opened, the control signal from a signal output terminal 16 to a transmitter is outputted and a control signal for making the transmitter to the transmitting state is outputted from a signal output terminal 17. When the transmission of a signal is finished, the counter 14 is started until the next transmission timing and the saie operation is repeated. Thus, the service performance is improved, the load of a controller is decreased and the constitution of the economical base station system is attained.

Description

【発明の詳細な説明】 発明の技術分野 本発明は、移動局が複数の無線チャネルを切替えて使用
し、サービスエリアが複数の小無線ゾーンからなり、こ
れら小無線ゾーン毎に基地局が設置されるとともに、通
信を行うチャネル以外に通信の接続を専用に行う制御チ
ャネルが設けられている移動通信方式に関し、とくに経
済的な制御チャネルの構成法による移動通信方式に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention provides a mobile station in which a mobile station switches and uses a plurality of radio channels, a service area consists of a plurality of small radio zones, and a base station is installed in each of these small radio zones. The present invention also relates to a mobile communication system in which a control channel dedicated for connection of communication is provided in addition to a communication channel, and particularly relates to a mobile communication system using an economical method of configuring a control channel.

技術の背景 自動車電話等の移動通信方式では、通話を行うチャネル
以外に通話の接続を専用に行う制御チャネルが設けられ
ている。（例えば、「自動車電話方式」電子通信学会誌
＊　ＶＱＬ−６４ｅＮｏ　１　）まず、本発明の説明を
容易にするため、この種の移動通信方式における制御チ
ャネルの構成及び使い方について説明する。通常制御チ
ャネルは、その機能上から着信専用の制御チャネル（着
信制御チャネル）と発信専用の制御チャネル（発信制御
チャネル）から構成されており、その機能としては、着
信制御チャネルは移動局の待ち受け（通信を行っていな
い時）用として用いられ、一般にはあらかじめ定められ
たチャネルとして待ち受は時は常時移動局で受信してい
る。該着信制御チャネルでは移動局への着信信号の他に
通常は、移動局が発信できるチャネル情報及び移動局の
所在エリア情報等が報知されている。移動局はこれらの
情報を基に、自移動間への着信、発信用のチャネル選択
及び所在エリア情報に基づく移動局の登録等を行うこと
が可能となる。また、発信制御チャネルは前記の如く着
信制御チャネルで報知され、移動局が発信時にチャネル
を該当発信制御チャネルに変更して発信信号等を送出し
通信の接続を行う。BACKGROUND OF THE TECHNOLOGY In mobile communication systems such as car telephones, in addition to channels for making calls, a control channel is provided exclusively for connecting calls. (For example, "Car Telephone System," Journal of the Institute of Electronics and Communication Engineers*VQL-64eNo. 1) First, in order to facilitate the explanation of the present invention, the configuration and usage of a control channel in this type of mobile communication system will be described. A normal control channel is functionally composed of a control channel dedicated to incoming calls (incoming control channel) and a control channel dedicated to outgoing calls (outgoing control channel). Generally, the mobile station receives signals on a predetermined channel during standby mode. In addition to the incoming signal to the mobile station, the incoming call control channel usually broadcasts channel information that the mobile station can send, information on the location area of the mobile station, and the like. Based on this information, the mobile station can select a channel for incoming and outgoing calls, and register the mobile station based on location area information. Further, the outgoing control channel is notified by the incoming call control channel as described above, and when the mobile station makes a call, it changes the channel to the corresponding outgoing control channel, sends out the outgoing signal, etc., and establishes a communication connection.

これら制御チャネルについて、通常移動局から送信する
信号のうち、着信に対する応答信号は着信信号受信後一
定のタイミングで送出することにより基地局の完全な制
御下に置くことが可能となるため、移動局に対する着信
等を処理する着信制御チャネルは高い能率で使用するこ
とができる。Regarding these control channels, among the signals normally transmitted from a mobile station, the response signal for an incoming call can be placed under complete control of the base station by sending it at a fixed timing after receiving the incoming signal. The incoming call control channel, which processes incoming calls to, can be used with high efficiency.

一方、発信制御チャネルは一般に任意の時刻での加入者
の発信に対処するため、信号の衝突等着信制御チャネル
に比べてチャネルの使用能率が低く。On the other hand, since the outgoing control channel generally handles calls by subscribers at arbitrary times, the channel usage efficiency is lower than that of the incoming control channel due to signal collisions.

チャネル当りの収容加入者容量は小さいのが普通である
。The subscriber capacity accommodated per channel is typically small.

この制御チャネルの使用方法としては、（１）無線ゾー
ン毎に異なるチャネルを使用する方法、 （２）複数の無線ゾーンで同−周波数のチャネルを使用
する方法（複局制御方式） 従来技術と問題点 上に述べた（１）の制御チャネルの使用方法は、制御チ
ャネルを通信に用いられるチャネルと同様に無線ゾーン
対応に配置するもので、各無線ゾーンに割り当てた無線
チャネルの一部を制御チャネルに、残りを通話チャネル
に使用する。この方法は、各無線ゾーンに対応する基地
局の設備（主に送受信機数）は、該無線ゾーンのトラヒ
ックに見合った数で良い利点はあるが、無線ゾーン毎に
制御チャネルの周波数が異なるため、無線ゾーンの境界
付近では移動局は制御チャネルを変更する必要があり、
この制御チャネルの探索時は接続のための制御が不可能
となる欠点がある。また（２）の制御チャネルの使用方
法（複局制御方式）は、無線ゾーン毎の制御チャネルの
周波数が同一であるため、無線ゾーンの境界付近におい
ても制御チャネルの探索の必要がなく、このため呼損は
生じないが、このような構成では、複数の無線ゾーンか
ら構成される制御ゾーン（同一局波数の制御チャネルで
送信されるエリア）全体のトラヒックに見合う設備を該
制御ゾーン内の全ての基地局で持つ必要があり、前述の
（１）の制御チャネルの使用方法の場合と比較して必要
な設備数は増加する欠点がある。Methods of using this control channel include (1) a method of using a different channel for each wireless zone, (2) a method of using a channel with the same frequency in multiple wireless zones (multi-station control method).Prior art and problems The method of using control channels (1) mentioned above is to arrange control channels corresponding to wireless zones in the same way as channels used for communication, and a part of the wireless channels allocated to each wireless zone is used as a control channel. then use the rest for the call channel. This method has the advantage that the number of base station equipment (mainly the number of transceivers) corresponding to each wireless zone is commensurate with the traffic of that wireless zone, but since the frequency of the control channel differs for each wireless zone, , the mobile station needs to change the control channel near the boundary of the wireless zone,
When searching for this control channel, there is a drawback that control for connection is impossible. In addition, in method (2) of using control channels (multi-station control method), since the frequency of the control channel for each wireless zone is the same, there is no need to search for a control channel even near the boundaries of wireless zones. Although call loss does not occur, in such a configuration, all the equipment within the control zone is equipped to handle the traffic of the entire control zone (area where control channels with the same station frequency are transmitted) consisting of multiple wireless zones. The base station must have this, and the disadvantage is that the number of required equipment increases compared to the control channel usage method (1) described above.

特Ｋ、発信制御チャネル用の送受信機については、この
傾向が著しい。即ち、発信制御チャネルの使用能率が悪
いため、制御ゾーン内の加入者が増加すると着信制御チ
ャネルと比較して顕著にそのチャネル数が増加し、それ
にともなって各基地局の設備も著しく増大するのである
。This tendency is particularly noticeable for transmitters and receivers for transmission control channels. In other words, because the usage efficiency of outgoing control channels is poor, when the number of subscribers in the control zone increases, the number of channels increases significantly compared to incoming control channels, and the equipment at each base station increases accordingly. be.

発明の目的 本発明は、着信制御チャネル（または、報知用の制御チ
ャネル）を各基地局で同期させて、自基地局に割り当て
られたタイムスロットで送信機を送信状態として、該基
地局で使用できるチャネル情報を送出し、発信可能な無
線ゾーン及びチャネルを移動局が判定できるようにした
ことを特徴とし、その目的は無線ゾーン境界付近におい
て制御チャネル探索を行う必要がなく、制御チャネルに
ついて各無線ゾーンのトラヒックに見合うだけの送受信
機を設備することで経済的に基地局を構成することにあ
る。Purpose of the Invention The present invention synchronizes an incoming control channel (or a control channel for broadcasting) at each base station, puts the transmitter in a transmitting state in a time slot assigned to the base station, and uses the transmitter at the base station. The feature is that the mobile station is able to determine the radio zones and channels in which transmission is possible by transmitting channel information that can be transmitted.The purpose is to eliminate the need to search for control channels near the boundaries of radio zones, and to transmit channel information on each radio The aim is to economically construct a base station by installing enough transceivers to match the traffic in the zone.

発明の実施例 まず本発明の説明を容易にするため、上記移動通信方式
における方式構成例を第１図に示す。１はサービスエリ
ア、２は小無線ゾーン、３は基地局、４は制御局であっ
て、各基地局と制御局との間は固定伝送路５によって結
ばれているものとする。第１図の例では、サービスエリ
アはＡ、Ｂ。Embodiments of the Invention First, in order to facilitate the explanation of the present invention, an example of the system configuration of the above mobile communication system is shown in FIG. 1 is a service area, 2 is a small wireless zone, 3 is a base station, and 4 is a control station, and each base station and the control station are connected by a fixed transmission line 5. In the example of FIG. 1, the service areas are A and B.

Ｃの３個の小無線ゾーンから構成され、おのおのの小無
線ゾーンに配置された１つまたは複数のチャネル（無数
周波数）をそれぞれｆｉ　、　ｆｓ　、　ｆｃで表わす
こととする。一方、サービスエリア全体で共通な１つま
たは複数の制御チャネル（無線周波数）をｆｓで表わす
こととする。なお、ｆｓについては各基地局３にて同一
周波数で送信されることになるが、無線局波数及び変調
信号の位相を合致させる等によって干渉しないように対
策がとられるのが一般的である。It is composed of three small wireless zones C, and one or more channels (innumerable frequencies) arranged in each small wireless zone are represented by fi, fs, and fc, respectively. On the other hand, one or more control channels (radio frequencies) common to the entire service area are expressed as fs. Although fs is transmitted at the same frequency at each base station 3, measures are generally taken to prevent interference by matching the radio station wave number and the phase of the modulated signal.

このように構成された移動通信方式における本発明の実
施例を第２図に示す。８２図は各基地局３における制御
局からの制御チャネルの信号中継動作を示すタイムチャ
ート例であって、〔Ｉ〕は制御局から基地局への制御信
号、［Ｉ［］は小小線線−ンＡ、Ｂ、Ｃの各基地局６に
対し、送信機へ中継する制御信号である。６は各基地局
３の同期をとるための同期信号、７，８．９はそれぞれ
各小無線ゾーンＡ、Ｂ、Ｃの各基地局３で使用可能なチ
ャ、ネル情報信号、１０は着信信号または所在サービス
エリア情報等制御チャネルで報知される信号である。FIG. 2 shows an embodiment of the present invention in a mobile communication system configured as described above. Figure 82 is an example of a time chart showing the signal relay operation of the control channel from the control station in each base station 3, where [I] is the control signal from the control station to the base station, [I[] is the small line - This is a control signal relayed to the transmitter for each of the base stations 6 of A, B, and C. 6 is a synchronization signal for synchronizing each base station 3, 7, 8, 9 is a channel information signal that can be used by each base station 3 in each small wireless zone A, B, C, and 10 is an incoming signal. Alternatively, it is a signal broadcast on a control channel such as location service area information.

なお本実施例では、信号中継時に送信機を送信状態にす
る。また、第３図は基地局３における制御信号中継部の
ブロック図である。１１は制′御局４からの制御信号入
力端子、１２は制御信号の中継器、１３は同期信号６の
検出器、１４はビットカウンタ、１５は信号の出力ゲー
ト、１６は送信機への制御信号出力端子、１７は送信機
の送信０Ｎ１０ＦＦを制御する信号出力端子である。Note that in this embodiment, the transmitter is placed in a transmitting state during signal relay. Further, FIG. 3 is a block diagram of a control signal relay section in the base station 3. 11 is a control signal input terminal from the control station 4, 12 is a control signal repeater, 13 is a detector for the synchronization signal 6, 14 is a bit counter, 15 is a signal output gate, and 16 is a control for the transmitter. A signal output terminal 17 is a signal output terminal that controls the transmission 0N10FF of the transmitter.

以下に′＠２図及び′ｉ＄３図によって基地局の動作を
説明する。The operation of the base station will be explained below with reference to Figure '@2 and Figure 'i$3.

制御局４から各基地局５へ送信される制御信号には、各
基地局３でチャネル情報を報知するためのタイムスロッ
トを示す同期用の信号６を設け、各基地局３ではこの同
期信号を基にあらかじめ各基地局３が重複しないように
定められたタイムスロットの位置を知ることが可能とな
る。即ち、各制御信号の長さは通常統一されているため
、各基地局３ではこの同期信号を同期信号検出器１６で
検出すると、ビットカウンタ１４を起動させることによ
り、同期信号検出器１３と同時に起動したビットカウン
タ１４によって、所定のタイムスロットの位置を知るこ
とができ、これによって信号出力ゲート１５を開くと同
時に信号出力端子１７から送信機を送信状態とする。信
号の送信が終了すると、次の送信タイミングまでビット
カウンタ１４を起動させ、上記の動作を繰り返す。また
、この制御チャネルは上記チャネル情報の他に、通常着
信信号、サービスエリア情報等の報知信号１０が必要と
なるが、これについても制御信号の長さをあらかじめ決
めておくことで上記と同様にして送信のタイミングを知
ることが可能である。なお、この種の制御信号について
は８２図に示す様に各基地局３で同時に送信することが
必要である。The control signal transmitted from the control station 4 to each base station 5 includes a synchronization signal 6 indicating a time slot for broadcasting channel information at each base station 3, and each base station 3 transmits this synchronization signal. Based on this, it becomes possible for each base station 3 to know the position of a time slot determined in advance so as not to overlap. That is, since the length of each control signal is usually unified, when this synchronization signal is detected by the synchronization signal detector 16 in each base station 3, it is simultaneously detected by the synchronization signal detector 13 by starting the bit counter 14. The activated bit counter 14 allows the position of a predetermined time slot to be known, thereby opening the signal output gate 15 and at the same time putting the transmitter into the transmitting state from the signal output terminal 17. When the signal transmission is completed, the bit counter 14 is activated and the above operation is repeated until the next transmission timing. In addition to the above channel information, this control channel also requires a notification signal 10 such as a normal incoming signal and service area information, but this can also be done in the same way as above by determining the length of the control signal in advance. It is possible to know the timing of transmission. Note that it is necessary for each base station 3 to simultaneously transmit this type of control signal as shown in FIG. 82.

以上の説明では、チャネル情報を全て制御局４から各基
地局３へ送出するように構成されているが、他の実施例
として第４図のように、基地局６の制御信号中継部を構
成することも可能である。In the above explanation, the configuration is such that all channel information is sent from the control station 4 to each base station 3, but as another example, as shown in FIG. 4, the control signal relay section of the base station 6 is configured. It is also possible to do so.

１８は制御局４からの制御信号入力端子、１９は制御信
号の中継器、２０は同期信号６の検出器、２１はビット
カウンタ、２２は信号の合成器、２３は信号の出力ゲー
ト、２４はチャネル情報を送出する符号器、２５は送信
機への制御信号出方端子、２６は送信機の送信０Ｎ１０
ＦＦを制御する信号出方端子である＠この動作としては
、！Ｊ５図と同様に同期信た際にチャネル情報符号器２
４を起動させる。チャネル情報符号器２４は、該基地局
３で割り当てられているチャネルの使用状況に基づいて
その情報を２値打号に変換し、該当タイムスロットでチ
ャネル情報７，８．９が送信される。このように構成す
ることにより、各基地局３では使用可能なチャネル情報
を該各基他局５のみで知ることができるため、制御局４
は各基地局３のチャネル情報を作成・送信する必要がな
くなり、制御局４の負荷を軽減することが可能となる。18 is a control signal input terminal from the control station 4, 19 is a control signal repeater, 20 is a detector for the synchronization signal 6, 21 is a bit counter, 22 is a signal combiner, 23 is a signal output gate, and 24 is a An encoder that sends out channel information; 25 is a control signal output terminal to the transmitter; 26 is a transmission 0N10 of the transmitter;
This is the signal output terminal that controls the FF. Similarly to figure J5, channel information encoder 2
Start 4. The channel information encoder 24 converts the information into a binary encoding based on the usage status of the channel allocated by the base station 3, and the channel information 7, 8, 9 is transmitted in the corresponding time slot. With this configuration, in each base station 3, usable channel information can be known only by the corresponding base station 5, so that the control station 4
There is no need to create and transmit channel information for each base station 3, and the load on the control station 4 can be reduced.

次に、移動局の動作について説明する。Next, the operation of the mobile station will be explained.

移動局では各基地局５から送信される同期信号６をもと
に、各基地局３からチャネル情報が送信されるタイムス
ロット毎に受信電界強度を測定し、得られた受信電界強
度値を逐次比較して、最大の受信電界強度値に対応した
チャネル情報を記憶しておき、移動局から発信する際に
は、該チャネル情報に基づくチャネルを使用して発信を
行う。Based on the synchronization signal 6 transmitted from each base station 5, the mobile station measures the received field strength for each time slot in which channel information is transmitted from each base station 3, and sequentially calculates the received field strength values obtained. In comparison, channel information corresponding to the maximum received field strength value is stored, and when a mobile station makes a call, it makes a call using a channel based on the channel information.

次にチャネル情報の内容について説明する。Next, the contents of the channel information will be explained.

チャネル情報の内容としては、各基地局３毎に発信専用
の制御チャネルを設け、これを報知することが考えられ
る。これによって、＄３図及び第４図の実施例では各基
地局６毎にあらかじめ定められたチャネルを報知するこ
とが可能であり、チャネル情報の設定が容易となる利点
がある。なお、本実施例では、各小無線ゾーン２毎に発
信制御チャネルを配置しているが、発信制御チャネルに
ついては、そのチャネル容量に見合った加入者を含む１
つ以上の無線ゾーンをまとめて１つのタイムスロットと
して、同時に各基地局３で送信することも可能である。As for the contents of the channel information, it is conceivable to provide a control channel dedicated to transmission for each base station 3 and broadcast this. As a result, in the embodiments shown in FIGS. 3 and 4, it is possible to broadcast a predetermined channel for each base station 6, and there is an advantage that channel information can be easily set. In this embodiment, a transmission control channel is arranged for each small wireless zone 2, but the transmission control channel is allocated to one channel containing subscribers corresponding to the channel capacity.
It is also possible for each base station 3 to simultaneously transmit two or more wireless zones as one time slot.

また、以上の説明とは別の実施例としては、チャネル情
報に通信を行うチャネルを用いる方法がある。この方法
は、チャネル情報を報知する際、空き状態（使用されて
いない状態）の通信用チャネルを報知するもので、次の
時点で移動局の発信または着信によって該通信用チャネ
ルが使用された場合は、その都度報知するチャネルを他
の空きチャネルに変更していくものである。これＫよっ
て、上記の実施例と異なり、移動局は直接通信用のチャ
ネルを捕捉できるため、接続のための処理が簡便となる
他、発信専用の制御チャネルが不用となり、経済性の面
でも優れている。Further, as an embodiment different from the above explanation, there is a method of using a communication channel as channel information. In this method, when broadcasting channel information, a vacant (unused) communication channel is broadcast, and if the communication channel is used by a mobile station for making or receiving a call at the following times, In this method, the broadcasting channel is changed to another available channel each time. Therefore, unlike the above embodiment, the mobile station can directly capture the communication channel, which simplifies the process for connection, and also eliminates the need for a control channel dedicated to outgoing calls, which is excellent in terms of economy. ing.

次に、基地局３において空き通信用のチャネルがない場
合、すなわち全て使用中の場合の動作について説明する
。Next, the operation when there are no idle communication channels in the base station 3, that is, when all channels are in use will be described.

基地局３において通信用のチャネルが全て使用状態とな
った際には、上記チャネル情報に空き通信用チャネルな
しの情報を加えることにより、移動局において通信用チ
ャネルが全て使用中である旨を検出可能とすることがで
きる。このようにすることで、加入者にチャネルが全て
使用中であることを知らせることが可能であり、またそ
の際には空きチャネルができるまで移動局からの発信を
とめることも可能であり、サービス性の向上及び制御局
４または基地局５における無効な処理を軽減できる。When all the communication channels are in use at the base station 3, the mobile station detects that all the communication channels are in use by adding information indicating that there are no free communication channels to the above channel information. It can be made possible. By doing this, it is possible to notify the subscriber that all channels are in use, and in that case, it is also possible to stop the mobile station from making calls until a free channel becomes available, and the service can be suspended. This makes it possible to improve performance and reduce invalid processing at the control station 4 or base station 5.

チャネル情報が基地局３で作成・送信される場合（第４
図の実施例の場合）についてのこの実施例のブロック図
を′＠５図に示す。第５図で第４図と同じ符号は同じ部
分を示す。２７は空きチャネル無し情報を送出する符号
器、２８は通信用チャネル使用状態の検出器である。動
作を次に示す。同期信号検出器２０及びビットカウンタ
２１を起動させ、チャネル情報を報知する該当タイムス
ロットに達した際にチャネル情報符号器２４を起動させ
ることになるが、この際空きチャネル無し情報符号器２
７も起動される。この場合の合成器２２への信号の出力
は以下のようになる。各基地局では通常通信用チャネル
の送受信機及び制御局とを接続するための中継器などが
設置されているので使用可能な通信用チャネルが有か、
否かを検出器２８で判定し、使用可能な通信用チャネル
が有る場合は検出器２８からチャネル情報を送出する符
号器２４へ信号出力し、符号器２４よりチャネル情報を
２値打号に変換し出力する。また使用可能な通信用チャ
ネルが無い場合は検出器２８から符号器２７・へ信号出
力し、符号器２７よりチャネル無しの情報を２値打号に
して出力することにより前述した機能が実現される。な
お本実施例はチャネル情報が基地局で作成・送信される
場合について示したが、チャネル情報が制御局で作成・
送信される場合についても適用できることは言うまでも
ない。When channel information is created and transmitted by base station 3 (4th
A block diagram of this embodiment is shown in Figure 5. In FIG. 5, the same reference numerals as in FIG. 4 indicate the same parts. Reference numeral 27 is an encoder for transmitting information on the absence of an empty channel, and reference numeral 28 is a detector for detecting the use state of a communication channel. The operation is shown below. The synchronization signal detector 20 and the bit counter 21 are activated, and when the corresponding time slot for broadcasting channel information is reached, the channel information encoder 24 is activated.
7 is also activated. The signal output to the combiner 22 in this case is as follows. Each base station is usually equipped with a transmitter/receiver for communication channels and a repeater for connecting with the control station, so check whether there is a usable communication channel or not.
If there is a usable communication channel, the detector 28 outputs a signal to the encoder 24 which sends channel information, and the encoder 24 converts the channel information into a binary code. Output. If there is no usable communication channel, the detector 28 outputs a signal to the encoder 27, and the encoder 27 outputs information indicating that there is no channel in the form of a binary code, thereby realizing the above-described function. Note that although this embodiment shows the case where the channel information is created and transmitted by the base station, the channel information is created and transmitted by the control station.
Needless to say, this can also be applied to the case of transmission.

また、他の実施例としては、空き通信用チャネルがない
基地局３では、自基地局６のチャネル情報の送信を行わ
ないことにより、移動局では、該基地局３から送信され
るべきタイムスロットでは受信レベルが検出されないた
め、該基地局３以外の基地局３から送信されるチャネル
情報を記憶するか、他基地局３からも所要の受信レベル
で受信されない場合は、上記と同様に、チャネルが全て
使用中の旨を加入者に知らせることが可能であり、また
その際には空きチャネルができるまで移動局からの発信
をとめることも可能であり、サービス性の向上及び制御
局４または基地局３における無効な処理を軽減できる。Further, as another example, when a base station 3 that has no free communication channel does not transmit channel information of its own base station 6, the mobile station can transmit time slots that should be transmitted from the base station 3. Since the reception level is not detected in this case, either store the channel information transmitted from the base station 3 other than the base station 3, or if the reception level is not received from other base stations 3 at the desired reception level, the channel information can be changed in the same way as above. It is possible to notify the subscriber that all channels are in use, and in that case, it is also possible to stop transmission from the mobile station until a free channel becomes available, improving serviceability and making it easier for the control station 4 or the base station to Invalid processing at station 3 can be reduced.

＄６図はこの実施例のブロック図である。この実施例で
はチャネル情報が基地局で作成晦送信される場合（第４
図の実施例）について示しているが、チャネル情報を制
御局で作成・送信する場合（第５図の実施例）Ｋついて
も適用できる。＄６図で＠４図と同一符号は同一部分を
示す。２９は通信用チャネル使用状態の検出器、５０は
ビットカウンタ２１から信号の出力ゲート２５及び送信
機の送信ＱＮ１０ＦＦを制御する信号出力端子２６へ出
力される信号のゲートである。次に動作を説明する。同
期信号検出器２０及びビットカウンタ２１を起動させ、
チャネル情報を報知する該当タイムスロットに達した際
にチャネル情報符号器２４を起動させる訳であるが、こ
の際ビットカウンタ２１からの起動により通信用チャネ
ル使用状態の検出器２９も起動される０通常各基地局で
は通信用チャネルの送受信機及び送受信機からの入出力
を中継するための中継器などが設置されているので、こ
の使用状態を基に通信用チャネルに空きが有か否かを検
出器２９で判定する。従ってビットカウンタ２１から検
出器２９へ起動がかけられた際、空き通信用チャネルが
ある場合は、検出器２９によってゲート′５０を開き、
信号出力端子２５及び２６へ信号が送出され、送信機が
ＯＮ状態となり制御信号が送信される。また空き通信用
チャネルが無い場合は、検出器２９によってゲー）　５
０が閉じられ、これによりゲート２３も閉じられ、信号
出力端子２５及び２６への信号の出力が止められるため
、送信機はＯＦＦ状態となる。これにより上に述べた機
能力を実現されることになる。Figure $6 is a block diagram of this embodiment. In this embodiment, when the channel information is created and transmitted at the base station (the fourth
Although the embodiment shown in the figure is shown, it can also be applied to the case where the channel information is created and transmitted by the control station (the embodiment shown in FIG. 5). In Figure $6, the same symbols as in Figure @4 indicate the same parts. 29 is a communication channel usage state detector, and 50 is a signal gate output from the bit counter 21 to the signal output gate 25 and the signal output terminal 26 that controls the transmission QN10FF of the transmitter. Next, the operation will be explained. Activate the synchronization signal detector 20 and bit counter 21,
When the corresponding time slot for broadcasting channel information is reached, the channel information encoder 24 is activated.At this time, the bit counter 21 activates the communication channel usage state detector 29.0 Normally Each base station is equipped with a communication channel transmitter/receiver and a repeater for relaying input/output from the transmitter/receiver, so it is detected whether the communication channel is free or not based on the usage status. Judgment is made using the device 29. Therefore, when the bit counter 21 activates the detector 29, if there is an empty communication channel, the detector 29 opens the gate '50,
Signals are sent to signal output terminals 25 and 26, the transmitter is turned on, and a control signal is transmitted. Also, if there is no free communication channel, the detector 29 detects a game) 5
0 is closed, the gate 23 is also closed, and the output of signals to the signal output terminals 25 and 26 is stopped, so that the transmitter is turned off. This will realize the functionality described above.

発明の詳細 な説明したように、使用効率の高い着信制御チャネルの
みに複局制御方式を適用し、移動局の発信系については
無線ゾーン単位でチャネルを設けられる構成を可能とし
たことＫより、従来と比較してサービス性の向上、制御
装置の負荷の軽減及び経済的な基地局系の構成を可能と
した等の効果大である。As described in detail of the invention, the multi-station control method is applied only to the highly efficient incoming call control channel, and the mobile station transmission system can be configured to have a channel for each wireless zone. Compared to the conventional system, this system has great effects such as improved serviceability, reduced load on the control device, and economical base station system configuration.

【図面の簡単な説明】[Brief explanation of the drawing]

＄１図はこの種の移動通信方式における方式構成例、＄
２図は本発明の実施例で基地局における制御局からの制
御チャネルの信号中継動作を示すタイムチャート例、′
＄３図は本発明の実施例で基地局における制御信号中継
部のブロック図、第４図は本発明の他の実施例で基地局
における制御信号中継部のブロック図、＄５図は本発明
のチャネル情報が基地局で作成・送信される場合の実施
例のブロック図、′＄６図は本発明のチャネル情報が基
地局で作成・送信される場合の他の実施例のブロック図
である。 １・・・サービスエリア、２・・・小無線ゾーン、ろ・
・・基地局、４・・・制御局、５・・・各基地局と制御
局との間の固定伝送路％６・・・各基地局の同期をとる
ための同期信号、７，８．９・・・各小無線ゾーンＡ、
Ｂ、Ｃの各基地局で使用可能なチャネル情報信号、１０
・・・着信またはサービスエリア情報等制御チャネルで
報知される信号、１１・・・制御局からの制御信号入力
端子、１２・・・制御信号の中継器、１５・・・同期信
号６の検出器、１４・・・ビットカウンタ、１５・・・
信号の出力ゲート、１６・・・送信機への制御信号出力
端子、１７・・・送信機の送信０Ｎ１０ＦＦを制御する
信号出力端子、１８・・・制御局からの制御信号入力端
子、１９・・・制御信号の中継器、２０・・・同期信号
６の検出器、２１・・・ビットカウンタ、２２・・・合
成器、２３・・・信号の出力ゲート、２４・・・チャネ
ル情報を送出する符号器。 ２５・・・送信機への制御信号出力端子、２６・・・送
信機の送信０Ｎ１０ＦＦを制御する信号出力端子、２７
・・・チャネル無し情報を送出する符号器、２８　、２
９・・・通信用チャネル使用状態の検出器、３０・・・
信号の出力ゲート 特許出願人　日本電信電話公社 代理人　弁理士　玉蟲久五部（外３名）第３図 １！！４図 第５図 第６図Figure 1 shows an example of a system configuration for this type of mobile communication system, $
Figure 2 is an example of a time chart showing signal relay operation of a control channel from a control station in a base station in an embodiment of the present invention.
Figure 3 is a block diagram of a control signal relay unit in a base station according to an embodiment of the present invention, Figure 4 is a block diagram of a control signal relay unit in a base station according to another embodiment of the present invention, and Figure 5 is a block diagram of a control signal relay unit in a base station according to another embodiment of the present invention. Figure '$6 is a block diagram of another embodiment in which the channel information of the present invention is created and transmitted at the base station. . 1...Service area, 2...Small wireless zone, Ro・
...Base station, 4...Control station, 5...Fixed transmission path between each base station and control station%6...Synchronization signal for synchronizing each base station, 7,8. 9...Each small wireless zone A,
Channel information signal usable at each base station B and C, 10
. . . Signal broadcast on control channel such as incoming call or service area information, 11. Control signal input terminal from control station, 12. Control signal repeater, 15. Detector of synchronization signal 6. , 14...bit counter, 15...
Signal output gate, 16... Control signal output terminal to the transmitter, 17... Signal output terminal for controlling transmission 0N10FF of the transmitter, 18... Control signal input terminal from the control station, 19...・Control signal repeater, 20...Detector of synchronization signal 6, 21...Bit counter, 22...Synthesizer, 23...Signal output gate, 24...Sends channel information encoder. 25... Control signal output terminal to the transmitter, 26... Signal output terminal for controlling transmission 0N10FF of the transmitter, 27
. . . Encoder that sends out channelless information, 28, 2
9...Communication channel usage status detector, 30...
Signal output gate patent applicant Nippon Telegraph and Telephone Public Corporation agent Patent attorney Gobe Tamamushi (3 others) Figure 3 1! ! Figure 4 Figure 5 Figure 6

Claims (1)

【特許請求の範囲】 （１）移動局が複数の無線チャネルを切替えて使用し、
サービスエリアが複数の小無線ゾーンからなり、該小無
線ゾーン毎に基地局を設置するとともに、通信を行うチ
ャネル以外に通信の接続を専用に行う制御チャネルを設
ける移動通信方式において、前記サービスエリア内の全
小熱線ゾーンで共通な制御チャネルを設け、該制御チャ
ネルについて該小無線ゾーン毎に設置された各基地局で
同期させて、該各基他局毎に固有のタイムスロットを割
り当て、該各基他局では自基地局に割り当てられたタイ
ムスロットで制御チャネル用送信機を送信状態とし、送
信時には該小無線ゾーンで移動局が使用可能なチャネル
情報を報知することを特徴とする移動通信制御方式。 （２）前記移動局で前記制御チャネルを受信する際、該
移動局が該制御チャネルに割当てられた該タイムスロッ
トを単位として受信電界強度を測定すること釦より、該
移動局において該移動局の所在無線ゾーンで使用可能な
チャネル情報を得ることを特徴とする特許請求の範囲第
１項記載の移動通信制御方式。 （５）前記各基地局に割り当てられたタイムスロットで
制御チャネル用送信機を送信状態にする際、該基地局に
おいて空き通信用のチャネルがない場合、該基地局に割
り当てられたタイムスロットでの送信を停止することを
特徴とする特許請求の範囲第１項記載の移動通信制御方
式。 （４）前記各基地局に割り当てられたタイムスロットで
制御チャネル用送信機を送信状態にする際、該基地局に
おいて空き通信用のチャネルがない場合、該基地局に割
り当てられたタイムスロットに通信用チャネルが全て使
用中であることを報知することを特徴とする特許請求の
範囲第１項記載の移動通信制御方式。[Claims] (1) A mobile station switches and uses multiple wireless channels,
In a mobile communication system in which a service area consists of a plurality of small wireless zones, a base station is installed in each small wireless zone, and a control channel is provided exclusively for communication connection in addition to the communication channel. A common control channel is provided in all small wireless zones, and each base station installed in each small wireless zone is synchronized with respect to the control channel, and a unique time slot is assigned to each base station. A mobile communication control characterized in that a base station sets a control channel transmitter to a transmitting state in a time slot assigned to its own base station, and broadcasts channel information that can be used by a mobile station in the small wireless zone at the time of transmission. method. (2) When the mobile station receives the control channel, the mobile station measures the received field strength in units of the time slots assigned to the control channel. The mobile communication control system according to claim 1, characterized in that information on channels available in the wireless zone where the mobile communication control system is located is obtained. (5) When setting the control channel transmitter to the transmitting state in the time slot assigned to each base station, if there is no free communication channel in the base station, the control channel transmitter in the time slot assigned to the base station The mobile communication control system according to claim 1, characterized in that transmission is stopped. (4) When setting the control channel transmitter to the transmitting state in the time slot assigned to each base station, if there is no free communication channel in the base station, communication is performed in the time slot assigned to the base station. 2. The mobile communication control system according to claim 1, wherein the mobile communication control system notifies that all channels are in use.
JP57073817A 1982-05-01 1982-05-01 Mobile communication controlling system Granted JPS58191542A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57073817A JPS58191542A (en) 1982-05-01 1982-05-01 Mobile communication controlling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57073817A JPS58191542A (en) 1982-05-01 1982-05-01 Mobile communication controlling system

Publications (2)

Publication Number Publication Date
JPS58191542A true JPS58191542A (en) 1983-11-08
JPS6355825B2 JPS6355825B2 (en) 1988-11-04

Family

ID=13529082

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57073817A Granted JPS58191542A (en) 1982-05-01 1982-05-01 Mobile communication controlling system

Country Status (1)

Country Link
JP (1) JPS58191542A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61177037A (en) * 1985-02-01 1986-08-08 Nippon Telegr & Teleph Corp <Ntt> Radio telephone system
JPS62502841A (en) * 1985-05-09 1987-11-12 テレフオンアクチ−ボラゲツト　エル　エム　エリクソン Facilities and facility systems with portable radio telephones
JPS63314925A (en) * 1987-06-18 1988-12-22 Matsushita Commun Ind Co Ltd Radio telephone equipment
JPH01180134A (en) * 1988-01-11 1989-07-18 Nec Corp Method for switching channel during communication of mobile communication system and mobile terminal equipment
JPH03102925A (en) * 1989-09-18 1991-04-30 Nippon Telegr & Teleph Corp <Ntt> Radio zone selecting method
JPH04233833A (en) * 1990-07-17 1992-08-21 Northern Telecom Ltd Wireless link architecture
JPH04282923A (en) * 1991-03-12 1992-10-08 Nec Corp Mobile communication system
JPH04284033A (en) * 1991-03-12 1992-10-08 Nec Corp Mobile communication system
USRE36309E (en) * 1987-11-27 1999-09-21 Nec Corporation Handoff method for cellular digital mobile communication system and mobile station
US6542747B1 (en) 1999-02-15 2003-04-01 Nec Corporation Radio communication system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61177037A (en) * 1985-02-01 1986-08-08 Nippon Telegr & Teleph Corp <Ntt> Radio telephone system
JPS62502841A (en) * 1985-05-09 1987-11-12 テレフオンアクチ−ボラゲツト　エル　エム　エリクソン Facilities and facility systems with portable radio telephones
JPH0886U (en) * 1985-05-09 1996-01-19 テレフオンアクチーボラゲツト エル エム エリクソン Facility with fixed device and portable wireless telephone
JPS63314925A (en) * 1987-06-18 1988-12-22 Matsushita Commun Ind Co Ltd Radio telephone equipment
USRE36309E (en) * 1987-11-27 1999-09-21 Nec Corporation Handoff method for cellular digital mobile communication system and mobile station
JPH01180134A (en) * 1988-01-11 1989-07-18 Nec Corp Method for switching channel during communication of mobile communication system and mobile terminal equipment
JPH03102925A (en) * 1989-09-18 1991-04-30 Nippon Telegr & Teleph Corp <Ntt> Radio zone selecting method
JPH04233833A (en) * 1990-07-17 1992-08-21 Northern Telecom Ltd Wireless link architecture
JPH04282923A (en) * 1991-03-12 1992-10-08 Nec Corp Mobile communication system
JPH04284033A (en) * 1991-03-12 1992-10-08 Nec Corp Mobile communication system
US6542747B1 (en) 1999-02-15 2003-04-01 Nec Corporation Radio communication system

Also Published As

Publication number Publication date
JPS6355825B2 (en) 1988-11-04

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