JPS6351419B2 - - Google Patents
Info
- Publication number
- JPS6351419B2 JPS6351419B2 JP55181367A JP18136780A JPS6351419B2 JP S6351419 B2 JPS6351419 B2 JP S6351419B2 JP 55181367 A JP55181367 A JP 55181367A JP 18136780 A JP18136780 A JP 18136780A JP S6351419 B2 JPS6351419 B2 JP S6351419B2
- Authority
- JP
- Japan
- Prior art keywords
- base station
- channel
- control channel
- wireless
- station transceiver
- 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 15
- 238000010586 diagram Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
-
- 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)
Description
【発明の詳細な説明】
本発明は移動無線通信方式に関し、特に自動車
電話システムにおける無線基地局に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mobile radio communication system, and particularly to a radio base station in a car telephone system.
従来、自動車電話システムのように、ある特定
のチヤンネルを制御チヤンネルとして使用してい
るシステムでは、前記制御チヤンネルに干渉等が
発生すると、サービスの低下となる場合があつ
た。 Conventionally, in a system such as a car telephone system that uses a certain channel as a control channel, if interference or the like occurs in the control channel, the service may deteriorate.
本発明は、無線基地局が制御チヤンネルを使つ
て複数の無線子局（例えば移動局）を制御すると
いう、制御チヤンネルが重要な役目を持つシステ
ムにおいて、制御チヤンネルへの干渉等によつて
ひきおこるサービスの低下をすみやかに解決する
方式を提供するものである。 The present invention deals with systems in which a control channel plays an important role, in which a wireless base station uses a control channel to control multiple wireless slave stations (e.g., mobile stations), in which a wireless base station uses a control channel to control multiple wireless slave stations (for example, mobile stations). This provides a method for quickly resolving service degradation.
以下、本発明の実施例について説明する。 Examples of the present invention will be described below.
本発明の一実施例は、特に、複数の無線ゾーン
にそれぞれ１つの無線基地局があり、それらの無
線ゾーンで任意に定められた無線周波数を共通と
した少なくとも１チヤンネルの制御チヤンネルと
各無線ゾーンに割当られた複数の通話チヤンネル
とを有する移動通信システムに関する。このよう
なシステムにおいては、ある無線ゾーンで干渉、
妨害波や事故等が発生して前記制御チヤンネルが
使用不能になつたとき、この無線ゾーン内にあつ
てこの制御チヤンネルにより制御されていた複数
の移動局は、このシステムを利用することができ
なくなり、システムとして重大な欠点となる。こ
れを解決するために、本発明の一実施例では、各
無線ゾーン内の各基地局が、前記制御チヤンネル
用の基地局送受信機の入出力に接続されている制
御信号の入出力ラインが複数の通話チヤンネル用
の基地局送受信機のうちのいずれか一つの通話チ
ヤンネル用の基地局送受信機の入出力に接続され
るように切換える手段を持つことにより、前記制
御チヤンネルが使用不能になつた無線ゾーン内の
基地局においてだけ前記制御チヤンネルの使用を
やめ、前記無線ゾーンで使用している複数の通話
チヤンネルの中から１チヤンネルを制御チヤンネ
ルに変更して使用することにより、サービスの低
下をより狭い範囲に限ることができ、また短時間
に復帰することができる。 In particular, an embodiment of the present invention includes one wireless base station in each of a plurality of wireless zones, and at least one control channel that shares an arbitrarily determined wireless frequency in those wireless zones, and a control channel in each wireless zone. The present invention relates to a mobile communication system having a plurality of communication channels assigned to a mobile communication system. In such systems, interference in a certain radio zone,
When the control channel becomes unusable due to interference waves, an accident, etc., multiple mobile stations within this wireless zone and controlled by this control channel will no longer be able to use this system. , which is a serious drawback as a system. To solve this problem, in one embodiment of the present invention, each base station in each wireless zone has multiple control signal input/output lines connected to the input/output of the base station transceiver for the control channel. of the base station transceivers for one of the communication channels, by means of switching the radio to be connected to the input/output of the base station transceiver for the communication channel of any one of the base station transceivers for the communication channel, whereby the control channel becomes unusable. By discontinuing the use of the control channel only in the base stations within the zone and changing one channel from among the plurality of call channels used in the wireless zone to the control channel, the deterioration of service can be narrowed down. It can be limited to a limited range and can be restored in a short time.
上述した本発明の一実施例について第１図〜第
３図を参照してより詳細に説明する。 One embodiment of the present invention described above will be described in more detail with reference to FIGS. 1 to 3.
本発明の一実施例は、第１図を参照すると、３
無線ゾーンZ1，Z2，Z3で構成され、各無線ゾーン
のそれぞれに１基地局B1，B2，B3が有り、B1基
地局では、制御チヤンネルとしてP1チヤンネル、
発呼チヤンネルとしてA1チヤンネル、通話チヤ
ンネルとしてS1，S2，S3チヤンネルを使用してお
り、B2基地局では、制御チヤンネルとしてP1チ
ヤンネル、発呼チヤンネルとしてA2チヤンネル、
通話チヤンネルとしてS4，S5，S6チヤンネルを使
用しており、B3基地局では、制御チヤンネルと
してP1チヤンネル、発呼チヤンネルとしてA3チ
ヤンネル、通話チヤンネルとしてS7，S8，S9チヤ
ンネルを使用している自動車電話システムであ
る。制御チヤンネルではこのシステムで使用して
いる発呼チヤンネルとしてのA1，A2，A3チヤン
ネル数をACH情報として放送している。 One embodiment of the invention, with reference to FIG.
It consists of wireless zones Z 1 , Z 2 , and Z 3 , and each wireless zone has one base station B 1 , B 2 , and B 3 , and the B 1 base station has a P 1 channel as a control channel,
The A 1 channel is used as the calling channel, and the S 1 , S 2 , and S 3 channels are used as the calling channels. At the B 2 base station, the P 1 channel is used as the control channel, and the A 2 channel is used as the calling channel.
S 4 , S 5 , and S 6 channels are used as communication channels, and at the B 3 base station, P 1 channel is used as a control channel, A 3 channel is used as a calling channel, and S 7 , S 8 , and S 9 are used as speech channels. This is a car phone system that uses channels. The control channel broadcasts the numbers of A 1 , A 2 , and A 3 channels as calling channels used in this system as ACH information.
今、無線ゾーンZ2に於いて、P1チヤンネルが
他のシステムからの妨害波等により使用不能とな
ると、その無線ゾーンではP1チヤンネルとして
使用することを止め、その無線ゾーンで通話チヤ
ンネルとして使用していたS4，S5，S6の中から１
チヤンネルS6をこの無線ゾーンでの新たな制御チ
ヤンネルとして使用する。もちろん、第３図にあ
るように、今までP1チヤンネル用の送受信機１、
６の入出力に接続されていた制御信号の入出力ラ
イン１１，１２は、今まで通話チヤンネルとして
使用していたS6チヤンネル用の送受信機２，７の
入出力に接続されるように、ライン切換え器１３
によつてラインの切続切換をして、S6チヤンネル
用の送受信機２，７に制御チヤンネルとしてのデ
ータ（制御信号）が入出力する構成となつてい
る。なお、第３図において、１６はアンテナ、１
７は共用器、１８は合成器、１９は分配器であ
る。 Now, in wireless zone Z 2 , if the P 1 channel becomes unusable due to interference from other systems, it will stop being used as a P 1 channel in that wireless zone and will be used as a communication channel in that wireless zone. 1 from S 4 , S 5 , and S 6
Channel S 6 is used as the new control channel in this radio zone. Of course, as shown in Figure 3, until now the transmitter/receiver 1 for the P 1 channel,
The control signal input/output lines 11 and 12 that were connected to the input/output of S6 are now connected to the input and output of transceivers 2 and 7 for the S6 channel, which has been used as a communication channel. Switcher 13
The line is switched on and off by the S6 channel, and data (control signals) as a control channel are input and output to the transmitter/receiver 2 and 7 for the S6 channel. In addition, in FIG. 3, 16 is an antenna, 1
7 is a duplexer, 18 is a combiner, and 19 is a distributor.
一方、移動局では、待受け時、第２図のフロー
を実行している。第２図において、は基地局か
らのデータ受信及び電話機とのインタフエースチ
エツク等待受け時の処理、は制御チヤンネルで
一定時間の間にACH情報受信か？はチヤンネ
ルスキヤン、はこのチヤンネルでACH情報が
受信できたか？は新しい制御チヤンネルとして
ロツクし使用する、を示す。このとき、P1チヤ
ンネルでACH情報が予め決められた時間（たと
えば60秒）以上受信できなかつたら移動局では制
御チヤンネルがP1チヤンネルから他のチヤンネ
ルに変更になつたと判断して、チヤンネルスキヤ
ンを始め、電界のあるチヤンネルでACH情報を
受信したらこのチヤンネルを新しい制御チヤンネ
ルとして記憶し、使用する。 On the other hand, the mobile station executes the flow shown in FIG. 2 during standby. In Figure 2, indicates processing during standby such as data reception from the base station and interface check with the telephone, and indicates reception of ACH information during a certain period of time on the control channel? Is the channel scanned? Was it possible to receive ACH information on this channel? indicates to lock and use as a new control channel. At this time, if ACH information cannot be received on the P 1 channel for a predetermined period of time (for example, 60 seconds), the mobile station determines that the control channel has changed from the P 1 channel to another channel, and performs channel scanning. Initially, when ACH information is received on a channel with an electric field, this channel is stored and used as a new control channel.
このようにして無線ゾーンZ2では制御チヤンネ
ルとしてS6チヤンネルを使用し、この無線ゾーン
Z2内に存在する移動局は自動的にS6チヤンネルを
制御チヤンネルとして再認識して使用する。 In this way, wireless zone Z 2 uses the S 6 channel as the control channel, and this wireless zone
Mobile stations existing within Z2 automatically re-recognize and use the S6 channel as a control channel.
本発明は以上説明したように、制御チヤンネル
を他の通話チヤンネルに移すことにより、サービ
スの低下等の事故を短時間で解決でき、システム
の信頼性を向上させる効果がある。 As described above, the present invention has the effect of moving the control channel to another communication channel, thereby making it possible to solve problems such as service deterioration in a short time, and improving the reliability of the system.
第１図は本発明の一実施例の正常な場合の無線
チヤンネルの配置とゾーンを示した図である。
Z1，Z2，Z3…無線ゾーン、B1，B2，B3…基地
局、P1…制御チヤンネル、A1，A2，A3…発呼チ
ヤンネル、S1，S2，…，S9…通話チヤンネル。
第２図は本発明の一実施例に従う移動局の待受
け時におけるタスクを説明する図で、特に制御チ
ヤンネルに関するタスクを説明するフローであ
る。第３図はP1チヤンネルが使用不能になつた
無線ゾーンZ2内の基地局B2の制御チヤンネル用
ラインと通話チヤンネル用ラインの切換を説明す
るための本発明に従う基地局の構成図である。
１…P1チヤンネル用の送信機、２…S6チヤン
ネル用の送信機、３…S5チヤンネル用の送信機、
４…S4チヤンネル用の送信機、５…A1チヤンネ
ル用の送信機、６…P1チヤンネル用の受信機、
７…S6チヤンネル用の受信機、８…S5チヤンネル
用の受信機、９…S4チヤンネル用の受信機、１０
…A1チヤンネル用の受信機、１１…制御信号の
入力ライン、１２…制御信号の出力ライン、１３
…切換え器、１４および１５…通話チヤンネルS6
用ライン、１６…アンテナ、１７…共用器、１８
…合成器、１９…分配器。
FIG. 1 is a diagram showing the arrangement and zones of wireless channels in a normal case according to an embodiment of the present invention. Z 1 , Z 2 , Z 3 ... Wireless zone, B 1 , B 2 , B 3 ... Base station, P 1 ... Control channel, A 1 , A 2 , A 3 ... Calling channel, S 1 , S 2 , ... ,S 9 ...Call channel. FIG. 2 is a diagram illustrating tasks during standby of a mobile station according to an embodiment of the present invention, and in particular is a flowchart illustrating tasks related to control channels. FIG. 3 is a configuration diagram of a base station according to the present invention for explaining switching between a control channel line and a speech channel line of base station B 2 in wireless zone Z 2 where channel P 1 has become unusable. . 1...P transmitter for 1 channel, 2...S transmitter for 6 channels, 3...S transmitter for 5 channels,
4...S transmitter for 4 channels, 5...A transmitter for 1 channel, 6...P receiver for 1 channel,
7...Receiver for S 6 channels, 8...Receiver for S 5 channels, 9...Receiver for S 4 channels, 10
...A receiver for 1 channel, 11...control signal input line, 12...control signal output line, 13
…Switcher, 14 and 15…Speech channel S 6
line, 16... antenna, 17... duplexer, 18
...Synthesizer, 19...Distributor.
Claims (1)
話チヤンネルを有し、無線基地局が前記制御チヤ
ンネルを使つて特定の情報を常時送信することに
よつて複数の無線子局を制御する無線通信方式に
おいて、前記無線基地局は、前記制御チヤンネル
用の基地局送受信機と、前記複数の通話チヤンネ
ル用の基地局送受信機とを備え、前記制御チヤン
ネル用の基地局送受信機の入出力ライン及び前記
通話チヤンネル用の基地局送受信機から選ばれた
所定の基地局送受信機の入出力ラインとの間に設
けられた切換手段を有し、前記制御チヤンネルが
使用不能になつたとき、前記基地局では、前記切
換手段により前記制御チヤンネル用の基地局送受
信機の入出力ラインを前記所定の基地局送受信機
の入出力ラインに切り換え、これによつて、前記
複数の通話チヤンネルの中の一チヤンネルを制御
チヤンネルに変更して使用し、当該変更された制
御チヤンネルを通して前記特定の情報を流す一
方、前記無線子局では、前記特定の情報を監視
し、予め定められた期間、前記特定の情報の不受
信を検出して、制御チヤンネルを切換えるように
したことを特徴とする無線通信方式。1 In a wireless communication system having at least one control channel and a plurality of communication channels, a wireless base station controls a plurality of wireless slave stations by constantly transmitting specific information using the control channel, The wireless base station includes a base station transceiver for the control channel and a base station transceiver for the plurality of communication channels, and includes an input/output line of the base station transceiver for the control channel and a base station transceiver for the communication channel. A switching means is provided between the base station transceiver and an input/output line of a predetermined base station transceiver selected from the base station transceiver, and when the control channel becomes unusable, the base station switches the switching means. switches the input/output line of the base station transceiver for the control channel to the input/output line of the predetermined base station transceiver, thereby changing one channel among the plurality of communication channels to the control channel. and transmitting the specific information through the changed control channel, while the wireless slave station monitors the specific information and detects non-reception of the specific information for a predetermined period of time. , a wireless communication system characterized by switching control channels.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55181367A JPS57106245A (en) | 1980-12-23 | 1980-12-23 | Radio communication system |
| US06/332,775 US4434506A (en) | 1980-12-23 | 1981-12-21 | Circuit arrangement for protecting a control channel from jamming waves in a radio communication system |
| GB8138547A GB2093316B (en) | 1980-12-23 | 1981-12-22 | Circuit arrangement for protecting a control channel from jamming waves in a radio communication system |
| CA000392926A CA1180053A (en) | 1980-12-23 | 1981-12-22 | Circuit arrangement for protecting a control channel from jamming waves in a radio communication system |
| SG50388A SG50388G (en) | 1980-12-23 | 1988-07-23 | Circuit arrangement for protecting a control channel from jamming waves in a radio communication system |
| HK371/89A HK37189A (en) | 1980-12-23 | 1989-05-04 | Circuit arrangement for protecting a control channel from jamming waves in a radio communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55181367A JPS57106245A (en) | 1980-12-23 | 1980-12-23 | Radio communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57106245A JPS57106245A (en) | 1982-07-02 |
| JPS6351419B2 true JPS6351419B2 (en) | 1988-10-13 |
Family
ID=16099479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55181367A Granted JPS57106245A (en) | 1980-12-23 | 1980-12-23 | Radio communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57106245A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5947852A (en) * | 1982-09-10 | 1984-03-17 | Nec Corp | Radio equipment |
| JPH01314031A (en) * | 1988-06-13 | 1989-12-19 | Nec Corp | System for assigning frequency to radio control line |
| JP2518899B2 (en) * | 1988-09-08 | 1996-07-31 | 富士通株式会社 | Frequency Division Multiplexing Network Control Method |
| JP2507631B2 (en) * | 1988-10-14 | 1996-06-12 | 日本電気株式会社 | Control channel switching control method in wireless telephone system |
| JPH0536940U (en) * | 1991-10-16 | 1993-05-18 | 三菱電機株式会社 | Control channel proxy device |
| US5647034A (en) * | 1994-10-03 | 1997-07-08 | Matsushita Electric Works, Ltd. | Operation displaying semiconductor switch |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5062705A (en) * | 1973-10-05 | 1975-05-28 |
-
1980
- 1980-12-23 JP JP55181367A patent/JPS57106245A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5062705A (en) * | 1973-10-05 | 1975-05-28 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57106245A (en) | 1982-07-02 |
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