JPS59161138A - Controlling system of mobile communication system - Google Patents
Controlling system of mobile communication systemInfo
- Publication number
- JPS59161138A JPS59161138A JP58035445A JP3544583A JPS59161138A JP S59161138 A JPS59161138 A JP S59161138A JP 58035445 A JP58035445 A JP 58035445A JP 3544583 A JP3544583 A JP 3544583A JP S59161138 A JPS59161138 A JP S59161138A
- Authority
- JP
- Japan
- Prior art keywords
- base station
- station
- control
- signal
- mobile
- 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.)
- Pending
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
- 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)
Abstract
Description
【発明の詳細な説明】
〔発明の属する技術分野〕
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無線ゾーンからなり、これ
らの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制御を専用に行う制御
チャネルが設けられている移動通信方式に関する。特に
、制御チャネルを用いて、移動局の所在ゾーンを判定す
る移動通信制御方式に関するものである。[Detailed Description of the Invention] [Technical Field to which the Invention Pertains] The present invention provides a system in which a mobile station switches and uses multiple wireless channels, a service area consists of multiple wireless zones, and a base station is installed in each of these wireless zones. The present invention relates to a mobile communication system in which a control channel is provided for exclusive use of communication connection control in addition to a communication channel. In particular, the present invention relates to a mobile communication control method that uses a control channel to determine the zone in which a mobile station is located.
自動車電話等の移動通信方式では、通話を行うチャネル
以外に通話の接続制御を専用に行う制御チャネルが設け
られている。この制御チャネルの使用方法として、制御
エリア内の複数の無線ゾーンに共通のチャネルを使用す
る方法がある。従来この種の制御チャネルの使用法とし
ては、通話の接続の際に、移動局が送信した制御チャネ
ルを各基地局で受信し、受信電界レベルの強度を比較し
て、最大レベルで受信できる基地局を決定し、その基地
局の通話用の空チャネルを選定して接続するものが広く
知られている。In mobile communication systems such as car telephones, in addition to channels for making calls, a control channel is provided exclusively for controlling connection of calls. As a method of using this control channel, there is a method of using a common channel for a plurality of wireless zones within a control area. Conventionally, this type of control channel was used when establishing a call, in which each base station receives the control channel transmitted by the mobile station, compares the strength of the received electric field level, and determines which base station can receive the signal at the maximum level. It is widely known that a base station is determined and an empty channel for communication of that base station is selected and connected.
このような従来の制御チャネルの使用法では、移動局の
所在ゾーンを判定するために、移動局が最初に発信した
接続制御信号を各基地局で受信して各受信レベルを比較
しているため、測定時間および測定回数が少なく開眼さ
れることになり、特に受信電界の不安定な移動通信方式
では、必ずしも最適な基地局に接続されることにならな
い欠点があった。In this conventional method of using control channels, in order to determine the zone in which a mobile station is located, each base station receives the connection control signal first transmitted by the mobile station and compares the reception levels. However, the measurement time and number of measurements are short, which is disadvantageous, and particularly in mobile communication systems where the received electric field is unstable, connection to the optimal base station is not necessarily achieved.
また、基地局では移動局から送信される制御チャネルの
信号の受信時間がある程度長くないと正確なレベルが測
定できないため、接続制御の処理時間が短縮できない欠
点があった。Furthermore, since the base station cannot accurately measure the level unless the reception time of the control channel signal transmitted from the mobile station is long enough, there is a drawback that the processing time for connection control cannot be shortened.
本発明はこれを改良するもので、移動局の側で通信の行
われない待機中に、各基地局の受信電界強度を測定比較
して、自局の正確な所在ゾーンの判定を行うことができ
る方式を提供することを目的とする。The present invention improves this by making it possible for a mobile station to measure and compare the received field strength of each base station while waiting for communication to determine the exact location zone of the mobile station. The purpose is to provide a method that can be used.
本発明は、複数の無線ゾーンに共通の制御チャネルを用
いる移動通信方式において、各基地局ごとに異なるタイ
ムスロットを割り当て、各基地局では自局のタイムスロ
ソＩ・にのみ制御信号を送信し、他局のタイムスロット
には制御チャネルを送信しないことにする。しかも、各
基地局は同一のレベルで制御信号を送信する。各移動局
は、通信を行うために待機している間に、基地局から制
御信号が送信される都度これを受信し、どのタイムスロ
ットの信号が最も高いレベルで受信されているかを識別
し、自局が通信を行う際にはどの基地局と通信を行うべ
きかの情報を記憶しておく。そして通信が開始されると
きにはこの記憶した情報を基地局に転送し、最適の通信
状態が得られる基地局と通信を設定するように制御する
。In a mobile communication system that uses a common control channel for multiple wireless zones, the present invention allocates a different time slot to each base station, and each base station transmits a control signal only to its own time slot I. It is assumed that no control channel is transmitted in the station's time slot. Furthermore, each base station transmits control signals at the same level. While waiting for communication, each mobile station receives a control signal each time it is transmitted from the base station, identifies which time slot the signal is being received at the highest level, When the own station communicates, it stores information on which base station to communicate with. Then, when communication is started, this stored information is transferred to the base station, and control is performed to set up communication with the base station that provides the optimum communication state.
まず、本発明が実施される移動通信方式の方式構成例を
第１図に示す。１はサービスエリア、２は無線ゾーン、
３は基地局である。４は制御局であり、これは固定電話
網へ接続するための交換局としても機能する。各基地局
３と制御局４との間は固定伝送路５によって結ばれてい
る。各基地局３にはそれぞれ無線ゾーン２が設定され、
原則としてこの無線ゾーン２の中にある移動局に対して
通信を行う。First, FIG. 1 shows an example of a system configuration of a mobile communication system in which the present invention is implemented. 1 is the service area, 2 is the wireless zone,
3 is a base station. 4 is a control station, which also functions as a switching center for connection to the fixed telephone network. Each base station 3 and control station 4 are connected by a fixed transmission line 5. A wireless zone 2 is set for each base station 3,
In principle, communication is performed with mobile stations within this wireless zone 2.
第１図の例では、サービスエリアはＡ、Ｂ、、Ｃの３個
の無線ゾーンからなり、サービスエリア全体で共通に原
則として一つの制御チャネル（Ｉｌｌ送波周波数ｆｍ）
を利用する。この制御チャネル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、無線周波数ｆ
ｍおよび変調信号の位相を合致させる等によって相互に
干渉しないように対策がとられる。In the example shown in Figure 1, the service area consists of three wireless zones A, B, and C, and in principle, one control channel (Ill transmission frequency fm) is common to the entire service area.
Use. This control channel will be transmitted at the same frequency at each base station 3, but the radio frequency f
Measures are taken to prevent mutual interference, such as by matching the phases of m and the modulation 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
施例について、信号のタイムチャートを第２図に示す。FIG. 2 shows a signal time chart for an embodiment of the present invention in a mobile communication system configured as described above.
第２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である。（ｒ）は
制御局から基地局への制御信号、（ｒ［）は無線ゾーン
Ａ、Ｂ、Ｃの各基地局３で、各移動局に送信するために
、送信機に入力される制御信号である。６は各基地局３
の同期をとるための同期信号、７．８．９はレベル測定
のためのパターン信号（または各小無線ゾーン３に対応
した報知信号）、１０は着呼信号等のサービスエリア全
体に報知される信号である。 第３図は基地局３に設置
される制御信号中継部のブロック構成図である。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はピントカウン
タ、１５は信号の出力ゲート、１６は送信機への制御信
号出力端子である。FIG. 2 is a time chart showing the signal relay operation of the control channel from the control station in each base station 3. (r) is a control signal from the control station to the base station, (r[) is a control signal input to the transmitter for transmission to each mobile station at each base station 3 in wireless zones A, B, and C. It is. 6 is each base station 3
7.8.9 is a pattern signal for level measurement (or broadcast signal corresponding to each small wireless zone 3), 10 is an incoming call signal, etc. broadcast to the entire service area. It's a signal. FIG. 3 is a block diagram of a control signal relay section installed 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 focus counter, 15 is a signal output gate, and 16 is a control signal output to the transmitter. It is a terminal.
次に第２図および第３図を参照しながら、本発明実施例
方式の基地局の動作を説明する。制御局４から各基地局
３へ送信される制御信号には、基準となる同期信号６を
設ける。各基地局３ではこの同期信号６を基にあらかじ
め各基地局３が重複しないように、それぞれ送信タイム
スロットの位置が定められている。すなわち各制御信号
の長さは統一されていて、各基地局３ではこの制御信号
から同期信号６を同期検出器１３で検出すると、ビット
カウンタ１４を起動させる。起動したピッ１−カウンタ
１４が所定の計数を行うと出力信号を送信する。これに
よって信号出力ゲート１５を開く。各基地局３はパター
ン信号７．８．９をそれぞれタイムスロットで送信する
。所定のタイムスロットでの制御信号の送信が終わると
、信号出力ゲート１５を閉じ、次の自局のタイミングま
でビットカウンタ１４の計数をつづける。このような動
作を繰り返すことにより、各基地局毎に重ならないタイ
ミングで信号を送信することができる。Next, the operation of the base station according to the embodiment of the present invention will be explained with reference to FIGS. 2 and 3. The control signal transmitted from the control station 4 to each base station 3 is provided with a reference synchronization signal 6. In each base station 3, the position of the transmission time slot is determined in advance based on this synchronization signal 6 so that the base stations 3 do not overlap each other. That is, the length of each control signal is unified, and when the synchronization detector 13 detects the synchronization signal 6 from this control signal in each base station 3, the bit counter 14 is activated. When the started P1-counter 14 performs a predetermined count, it transmits an output signal. This opens the signal output gate 15. Each base station 3 transmits pattern signals 7, 8, and 9 in respective time slots. When the transmission of the control signal in a predetermined time slot is completed, the signal output gate 15 is closed, and the bit counter 14 continues counting until the next local station timing. By repeating such operations, signals can be transmitted from each base station at non-overlapping timings.
またこの制御チャネルには上記パターン信号７．８．９
の他に、着信信号、サービスエリア情報等の報知信号１
０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により、上記と同様にして送信
のタイミングを設定する。This control channel also has the above pattern signal 7.8.9.
In addition, notification signals such as incoming signals and service area information 1
0 is required, but by determining the length of the control signal in advance, the timing of transmission is set in the same manner as above.
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３から送信される同期信号６を基
に、各基地局３についてそれぞれ固有の制御信号が送信
されるタイムスロット毎に復調レベルを測定する。得ら
れた復調レベルを逐次比較して、最大の復調レベルが現
われるタイムスロットを判定しこの情報を記憶しておく
。移動局は通信を行うことになったとき、各移動局は最
も受信電界強度が高く、接続制御に最適な基地局と通信
することが可能となる。必要があればこの記憶された情
報を基地局に送信する。Based on the synchronization signal 6 transmitted from each base station 3, the mobile station measures the demodulation level for each time slot in which a unique control signal is transmitted for each base station 3. The obtained demodulation levels are successively compared to determine the time slot in which the maximum demodulation level appears, and this information is stored. When the mobile stations decide to communicate, each mobile station can communicate with the base station that has the highest received field strength and is most suitable for connection control. If necessary, this stored information is transmitted to the base station.
上記例では、制御局４は基地局３とは別個に設けられて
いるが、制御局４がいずれが一つの基地局３に併設され
ている構成とすることができる。In the above example, the control station 4 is provided separately from the base station 3, but the control station 4 may be provided in combination with one base station 3.
また、基地局および移動局の装置の構成についでは、上
記実施例に示すものは一例であり、この他にもさまざま
な構成で本発明を実施することができる。Further, regarding the configurations of the base station and mobile station devices, those shown in the above embodiments are merely examples, and the present invention can be implemented with various other configurations.
以上説明したように、複数の無線ゾーンに共通な制御チ
ャネルを用いる複局制御方式において、各移動局は複数
の基地局についてその受信電界レベルを通信待機中に監
視することが可能になる。As described above, in the multi-station control system using a control channel common to a plurality of wireless zones, each mobile station can monitor the received electric field level of a plurality of base stations while waiting for communication.
これは、従来方式の基地局側で移動局がらのごく短い信
号でレベル判定を行うものに比べると、正確に通信を行
うべき基地局を判定することができるとともに、通信設
定の際にレベル測定を行ゎなくてよいから、接続制御時
間の短縮をはがることができる利点がある。Compared to conventional methods in which the base station side determines the level using a very short signal from the mobile station, this method not only allows more accurate determination of the base station with which to communicate, but also measures the level when setting up communication. Since there is no need to perform this process, there is an advantage that the connection control time can be shortened.
第１図は本発明を実施する移動通信方式の方式構成例を
示す図。
第２図は本発明実施例方式の基地局における制御チャネ
ルの信号中継動作を示すタイムチャートを示す図。
第３図は本発明実施例方式の基地局の制御信号中継部ブ
ロック構成図。
■・・・サービスエリア、２・・・無線ゾーン、３・・
・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・・・無線ゾーンＡ、Ｂ、Ｃ
の各基地局のタイムスロットにおけるレベル測定用パタ
ーン信号、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、１
３・・・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。
特許出願人 日本電信電話公社 、０
ｙｌ ２ 口
第 ３ ロFIG. 1 is a diagram showing an example of a system configuration of a mobile communication system implementing the present invention. FIG. 2 is a time chart showing a control channel signal relay operation in a base station according to an embodiment of the present invention. FIG. 3 is a block diagram of a control signal relay section of a base station according to an embodiment of the present invention. ■...Service area, 2...Wireless zone, 3...
- Base station, 4... Control station, 5... Fixed transmission path between each base station and the control station, 6... Synchronization signal for synchronizing each base station, 7.8.9 ...Wireless zone A, B, C
Level measurement pattern signal in the time slot of each base station, 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, 1
3...Detector for synchronization signal 6, 14...Bit counter, 15...Signal output gate, 16...Control signal output terminal to transmitter. Patent applicant: Nippon Telegraph and Telephone Public Corporation,
Claims (1)
れ、 この基地局を中心にそれぞれ無線ゾーンが設定され、 上記各基地局は一つの制御局に固定伝送路により接続さ
れ、 複数の移動局は上記基地局と複数の無線通信チャネルを
切替えて通信を行うように構成され、上記一つのサービ
スエリア内の複数の基地局について共通に一つの無線間
波数の制御チャネルを用いて各移動局と基地局との通信
の設定を行うように構成された移動通信方式において、
上記基地局から上記制御チャネルに送信される制御信号
は、上記サービスエリア内の複数の基地局について同期
して送信され、 上記制御信号には、同期信号と各基地局の送信タイミン
グが重ならないように設定されたパターン信号とを含み
、 各移動局では、通信の行われていない待機中に、受信さ
れた上記制御信号のうちの上記パターン信号を複数の基
地局から送信されたものについて比較することにより次
ぎに通信を設定すべき最適の基地局を判別する ように構成され先ことを特徴とする移動通信方式の制御
方式。[Claims] (11) A plurality of base stations are arranged within one service area, each wireless zone is set around this base station, and each base station is connected to one control station by a fixed transmission path. The plurality of mobile stations are configured to communicate with the base station by switching between a plurality of wireless communication channels, and the plurality of base stations within the one service area share one control channel of radio frequency. In a mobile communication system configured to configure communication between each mobile station and a base station using
The control signal transmitted from the base station to the control channel is transmitted synchronously to multiple base stations within the service area, and the control signal is transmitted in such a way that the synchronization signal and the transmission timing of each base station do not overlap. and a pattern signal set to , and each mobile station compares the pattern signals among the received control signals transmitted from a plurality of base stations during standby when no communication is being performed. 1. A control method for a mobile communication system, characterized in that the control method is configured to determine an optimal base station to which communication should be established next.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58035445A JPS59161138A (en) | 1983-03-04 | 1983-03-04 | Controlling system of mobile communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58035445A JPS59161138A (en) | 1983-03-04 | 1983-03-04 | Controlling system of mobile communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59161138A true JPS59161138A (en) | 1984-09-11 |
Family
ID=12442023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58035445A Pending JPS59161138A (en) | 1983-03-04 | 1983-03-04 | Controlling system of mobile communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59161138A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63314925A (en) * | 1987-06-18 | 1988-12-22 | Matsushita Commun Ind Co Ltd | Radio telephone equipment |
| JPS6412628A (en) * | 1987-07-06 | 1989-01-17 | Nippon Telegraph & Telephone | Time division multiplex mobile communication system |
| JPS6455924A (en) * | 1987-08-26 | 1989-03-02 | Nec Corp | Digital mobile communication system and mobile terminal equipment |
| JPS6471224A (en) * | 1987-09-10 | 1989-03-16 | Mitsubishi Electric Corp | Radio channel line control system for mobile body communication |
| JPH01503270A (en) * | 1987-05-01 | 1989-11-02 | モトローラ・インコーポレーテツド | A microcellular communication system using macrodiversity, a remote device for the microcellular communication system, a fixed position control and transmitting/receiving device for the microcellular communication system, and a method for selecting communication channels for the microcellular communication system. |
| JPH0264250U (en) * | 1988-11-02 | 1990-05-15 | ||
| JPH0341829A (en) * | 1989-07-07 | 1991-02-22 | Mitsubishi Electric Corp | Mobile station position registration method |
| JPH0345030A (en) * | 1989-07-13 | 1991-02-26 | Nippon Idou Tsushin Kk | Base station equipment, mobile station equipment and mobile communication system using them |
| JPH03160899A (en) * | 1989-11-20 | 1991-07-10 | Hasegawa Denki Seisakusho:Kk | Radio call system in wire telephone system |
| USRE36309E (en) * | 1987-11-27 | 1999-09-21 | Nec Corporation | Handoff method for cellular digital mobile communication system and mobile station |
-
1983
- 1983-03-04 JP JP58035445A patent/JPS59161138A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01503270A (en) * | 1987-05-01 | 1989-11-02 | モトローラ・インコーポレーテツド | A microcellular communication system using macrodiversity, a remote device for the microcellular communication system, a fixed position control and transmitting/receiving device for the microcellular communication system, and a method for selecting communication channels for the microcellular communication system. |
| JPS63314925A (en) * | 1987-06-18 | 1988-12-22 | Matsushita Commun Ind Co Ltd | Radio telephone equipment |
| JPS6412628A (en) * | 1987-07-06 | 1989-01-17 | Nippon Telegraph & Telephone | Time division multiplex mobile communication system |
| JPS6455924A (en) * | 1987-08-26 | 1989-03-02 | Nec Corp | Digital mobile communication system and mobile terminal equipment |
| JPH0573297B2 (en) * | 1987-08-26 | 1993-10-14 | Nippon Electric Co | |
| JPS6471224A (en) * | 1987-09-10 | 1989-03-16 | Mitsubishi Electric Corp | Radio channel line control system for mobile body communication |
| USRE36309E (en) * | 1987-11-27 | 1999-09-21 | Nec Corporation | Handoff method for cellular digital mobile communication system and mobile station |
| JPH0264250U (en) * | 1988-11-02 | 1990-05-15 | ||
| JPH0341829A (en) * | 1989-07-07 | 1991-02-22 | Mitsubishi Electric Corp | Mobile station position registration method |
| JPH0345030A (en) * | 1989-07-13 | 1991-02-26 | Nippon Idou Tsushin Kk | Base station equipment, mobile station equipment and mobile communication system using them |
| JPH03160899A (en) * | 1989-11-20 | 1991-07-10 | Hasegawa Denki Seisakusho:Kk | Radio call system in wire telephone system |
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