JPH01225237A - Radio call system - Google Patents
Radio call systemInfo
- Publication number
- JPH01225237A JPH01225237A JP63050804A JP5080488A JPH01225237A JP H01225237 A JPH01225237 A JP H01225237A JP 63050804 A JP63050804 A JP 63050804A JP 5080488 A JP5080488 A JP 5080488A JP H01225237 A JPH01225237 A JP H01225237A
- Authority
- JP
- Japan
- Prior art keywords
- channel
- radio
- service area
- receiving
- radio paging
- 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
Links
- 238000010586 diagram Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 5
- 230000005684 electric field Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は「ポケットベル」の名で知られる携帯無線機を
呼び出す無線呼出方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a radio paging system for paging a portable radio device known as a "pager."
従来から、サービスエリア内を移動する個々の携帯局を
選択的に呼び出す無線呼出方式が利用されている。この
ような無線呼出方式では、サービスエリア内に一以上の
基地局が配置され、この基地局が共通の無線チャネルを
用いて個々の携帯局を呼び出す。Conventionally, a wireless paging method has been used in which individual mobile stations moving within a service area are selectively called. In such a radio paging system, one or more base stations are located within a service area, and these base stations call individual mobile stations using a common radio channel.
しかし、従来の無線呼出方式では、携帯局の受信できる
無線チャネルが固定されており、携帯局がその属するサ
ービスエリア内に存在しているときには呼出可能である
が、他のサービスエリアに移動したときには呼出不能と
なる欠点があった。However, in the conventional radio paging system, the radio channel that a mobile station can receive is fixed, and it is possible to call when the mobile station is within the service area to which it belongs, but when the mobile station moves to another service area. There was a drawback that it could not be called.
本発明は、以上の問題点を解決し、携帯局が他のサービ
スエリアに移動した場合にもその携帯局を呼び出すこと
のできる無線呼出方式を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide a wireless paging system that can call a mobile station even when the mobile station moves to another service area.
本発明の無線呼出方式は、基地局が、他のサービスエリ
アと共通でしかも無線呼出チャネルとは別の無線チャネ
ルを用いて、隣接するサービスエリア間で互いにタイミ
ングが異なる識別信号を送信する手段を含み、携帯局が
、識別信号を受信して自局が存在するサービスエリアに
割り当てられた無線呼出チャネルを識別する手段と、こ
の手段の出力により受信チャネルをそのサービスエリア
に割り当てられた無線呼出チャネルに切り替える手段と
を含むことを特徴とする。The radio paging system of the present invention includes means for a base station to transmit identification signals with different timings between adjacent service areas using a radio channel that is common to other service areas and different from the radio paging channel. means for the mobile station to identify the radio paging channel assigned to the service area in which the mobile station is located by receiving an identification signal; and a radio paging channel assigned to the service area based on the output of the means; and means for switching to.
切り替える手段は、無線呼出チャネルを間欠的に受信し
てその受信電界強度を判断する手段と、この受信電界強
度が基準値以下となったときに受信チャネルを識別信号
受信用のチャネルに切り替える手段と、このチャネルで
受信した識別信号により受信チャネルをそのサービスエ
リアの無線呼出チャネルに切り替える手段とを含むこと
が望ましい。The switching means includes a means for intermittently receiving a radio paging channel and determining its received field strength, and a means for switching the receiving channel to a channel for receiving an identification signal when the received field strength becomes less than a reference value. , means for switching the receiving channel to a radio paging channel of the service area based on the identification signal received on this channel.
本発明の無線呼出方式は、複数のサービスエリアに共通
な無線チャネルを設定し、そこで報知される識別信号を
もとに、携帯局が受信チャネルを切り替える。すなわち
、携帯局がその受信周波数を切り替えて無線呼出信号お
よび識別信号を受信する。In the radio paging system of the present invention, a common radio channel is set up in a plurality of service areas, and a mobile station switches reception channels based on an identification signal broadcast there. That is, the mobile station switches its reception frequency and receives the radio paging signal and identification signal.
受信電界強度が低下したときだけ識別信号を受信し、識
別信号の受信後に受信チャネルをそのサービスゾーンの
無線呼出チャネルに切り替える場合には、受信周波数の
切り替えるだけで呼出信号と識別信号とを受信できる。If the identification signal is received only when the received electric field strength decreases, and the reception channel is switched to the radio paging channel of the service zone after receiving the identification signal, the paging signal and the identification signal can be received by simply switching the reception frequency. .
第１図は本発明実施例無線呼出方式のサービスエリア配
置を示す。ここでは、９個のサービスエリアで本発明を
実施した例を示す。FIG. 1 shows the service area layout of the wireless paging system according to the embodiment of the present invention. Here, an example will be shown in which the present invention is implemented in nine service areas.
個々のサービスエリア１−１〜１−９は、−以上の基地
局２による無線ゾーンの集合として構成される。個々の
サービスエリア１−１〜１−９では、すべての基地局２
が、その領域内を移動する個々の携帯局３を共通の無線
呼出チャネルを用いて選択的に呼び出す。Each service area 1-1 to 1-9 is configured as a set of wireless zones formed by - or more base stations 2. In each service area 1-1 to 1-9, all base stations 2
selectively calls individual mobile stations 3 moving within its area using a common radio paging channel.
第２図は基地局２の要部を示すブロック構成図である。FIG. 2 is a block diagram showing the main parts of the base station 2. As shown in FIG.
基地局２は、同じサービスエリア内の他の基地局と共通
の無線呼出チャネルを用いて、そのサービスエリア内を
移動する個々の携帯局３を選択的に呼び出す呼出信号送
信部２２と、他のサービスエリアと共通でしかも呼出信
号送信部２２の使用する無線呼出チャネルとは周波数の
異なる無線チャネルを用いて、隣接するサービスエリア
間で互いにタイミングが異なる識別信号を送信する識別
信号送信部２３と、呼出信号送信部２２および識別信号
送信部２３を制御する送信制御部２１と備える。送信制
御部２１は、上位装置を介して一般電話網に接続される
。The base station 2 includes a paging signal transmitter 22 that selectively calls individual mobile stations 3 moving within the service area using a radio paging channel common to other base stations within the same service area, and other base stations. an identification signal transmitter 23 that transmits identification signals with mutually different timings between adjacent service areas using a radio channel that is common to the service area and has a different frequency from the radio paging channel used by the paging signal transmitter 22; A transmission control section 21 that controls a calling signal transmission section 22 and an identification signal transmission section 23 is provided. The transmission control unit 21 is connected to a general telephone network via a host device.
第３図は、第１図に示したサービスエリア配置の場合を
例に、識別信号送信部２３の送信タイミングを示す。FIG. 3 shows the transmission timing of the identification signal transmitter 23 using the service area arrangement shown in FIG. 1 as an example.
ここで、サービスエリア１−１〜１−９のうち、互いに
連接していないものをグループとして分類し、サービス
エリア１−１ 、１−６．１−７をグループＡ１サービ
スエリア１−２．１−４．１−８をグループＢ１サービ
スエリア１−３．１−５をグループＢ、サービスエリア
１−９をグループＤとする。Here, among the service areas 1-1 to 1-9, those that are not connected to each other are classified as a group, and service areas 1-1 and 1-6.1-7 are grouped into groups A1, service areas 1-2.1 -4.1-8 is group B1, service area 1-3.1-5 is group B, and service area 1-9 is group D.
同じグループのサービスエリアに配置された基地局２の
識別信号送信部２３は、同じタイミングで識別信号を送
信する。すなわち、グループＡＳＢ、Ｃは、それぞれタ
イムスロットａＳｂＳｃに、同じ周波数の無線チャネル
を用いて識別信号を送信する。グループＤは他のサービ
スエリアに接していないので、他のグループと同じ無線
チャネルを用いるが、そのタイミングは任意である。Identification signal transmitters 23 of base stations 2 arranged in the service area of the same group transmit identification signals at the same timing. That is, groups ASB and C each transmit identification signals in time slots aSbSc using wireless channels of the same frequency. Since group D is not in contact with other service areas, it uses the same wireless channel as other groups, but the timing is arbitrary.
第４図は携帯局３の要部を示すブロック構成図である。FIG. 4 is a block diagram showing the main parts of the mobile station 3. As shown in FIG.
携帯局３は、受信チャネルの切替が可能な受信部３１と
、この受信部３１を制御する受信制御部３２と、呼出信
号を受信したことをアラーム音その他で使川音に通知す
る表示部３３とを備える。受信制御部３２は、基地局２
からの識別信号を受信して自局が存在するサービスエリ
アに割り当てられた無線呼出チャネルを識別する手段と
、この手段の出力により受信部３１を制御して、受信チ
ャネルをそのサービスエリアに割り当てられた無線呼出
チャネルに切り替える手段とを含み、さらに、この切り
替える手段として、無線呼出チャネルを間欠的に受信し
てその受信電界強度を判断する手段と、この受信電界強
度が基準値以下となったときに受信部３１を制御して受
信チャネルを識別信号受信用のチャネルに切り替える手
段と、このチャネルで受信した識別信号により受信部３
１の受信チャネルをそのサービスエリアの無線呼出チャ
ネルに切り替える手段とを含む。The mobile station 3 includes a receiving section 31 that can switch reception channels, a reception control section 32 that controls the receiving section 31, and a display section 33 that notifies the sound of a call signal by an alarm sound or other means. Equipped with. The reception control unit 32 controls the base station 2
a means for receiving an identification signal from a station to identify a radio paging channel assigned to a service area in which the local station is located; and means for switching to a radio paging channel set to a radio paging channel, and further includes means for intermittently receiving the radio paging channel and determining the received field strength thereof, and when the received field strength falls below a reference value. means for controlling the receiving section 31 to switch the receiving channel to a channel for receiving an identification signal;
and means for switching one reception channel to a radio paging channel of the service area.
第５図は受信制御部３２による制御の流れを示す図であ
る。FIG. 5 is a diagram showing the flow of control by the reception control section 32.
通常の受信状態では、受信部３１は間欠受信を行う。携
帯局３がサービスエリアの端に移動し、受信電界が一定
時間以上規定レベル以下に低下したときには、受信部３
１の受信周波数を識別信号受信用のチャネルに切り替え
、間欠受信を中止して識別信号を受信する。この識別信
号を受信すると、その識別信号に応じて受信部３１の受
信チャネルを切り替え、再び間欠受信を行う。識別信号
受信時の受信電界が規定レベル以下のときには、圏外表
示を行い、どのサービスエリアからも外れていることを
示す。In a normal reception state, the receiving section 31 performs intermittent reception. When the mobile station 3 moves to the edge of the service area and the received electric field drops below the specified level for a certain period of time, the receiving unit 3
1 reception frequency is switched to a channel for receiving the identification signal, intermittent reception is stopped, and the identification signal is received. When this identification signal is received, the reception channel of the receiving section 31 is switched according to the identification signal, and intermittent reception is performed again. If the received electric field at the time of receiving the identification signal is below the specified level, an out-of-service display is displayed, indicating that the device is out of any service area.
第６図は携帯局がサービスエリアを移動した場合のチャ
ネル切替の例を示す。FIG. 6 shows an example of channel switching when a mobile station moves from one service area to another.
初め、携帯局３がサービスエリア「Ａ」でチャネル「１
」を受信しているものとする。この携帯局がサービスエ
リアｒ１３Ｊに向かって移動すると、次第にチャネル「
１」の受信電界が低下する。このとき携帯局３は、受信
チャネルを識別信号受信用のチャネル「０」に切り替え
る。このチャネル「０」で識別信号を受信すると、サー
ビスエリア「Ｃ」でその携帯局に割り当てられているチ
ャネル「８」に受信周波数を切り替える。サービスエリ
アｒＢ」からサービスエリア「Ｃ」に移動する場合にも
同様である。 −
〔発明の効果〕
以上説明したように、本発明の無線呼出方式は、携帯局
が受信チャネルを切り替えることにより、複数のサービ
スエリアにわたり移動する携帯局を呼び出すことができ
る。したがって、広域にわたる無線呼出が可能となる効
果がある。Initially, mobile station 3 is on channel ``1'' in service area ``A''.
” has been received. As this mobile station moves towards the service area r13J, the channel "
1" reception electric field decreases. At this time, the mobile station 3 switches the receiving channel to channel "0" for receiving the identification signal. When the identification signal is received on channel "0", the reception frequency is switched to channel "8" assigned to that mobile station in service area "C". The same applies when moving from "service area rB" to service area "C". - [Effects of the Invention] As explained above, the wireless paging system of the present invention allows the mobile station to call a mobile station moving across multiple service areas by switching the reception channel. Therefore, there is an effect that wireless calls can be made over a wide area.
第１図は本発明実施例無線呼出方式のサービスエリア配
置を示す図。
第２図は基地局の要部ブロック構成図。
第３図は識別信号の送信タイミングを示す図。
第４図は携帯局の要部ブロック構成図。
第５図は受信制御部の制御の流れを示す図。
第６図は携帯局がサービスエリアを移動した場合のチャ
ネル切替の例を示す図。
１−１〜１−９・・・サービスエリア、２・・・基地局
、３・・・携帯局、２１・・・送信制御部、２２・・・
呼出信号送信部、２３・・・識別信号送信部、３１・・
・受信部、３２・・・受信制御部、３３・・・表示部。
特許出願人 日本電信電話株式会社
代理人 弁理士 井 出 直 孝
サービスエソ了の配置
第１図
第２図
タイムスロツＦ
識別信号送出タイミング
第４図
携帯局の受信チャネル切替
第５図
受信チャネル切替
第６図FIG. 1 is a diagram showing a service area arrangement of a wireless paging system according to an embodiment of the present invention. FIG. 2 is a block diagram of the main parts of the base station. FIG. 3 is a diagram showing the transmission timing of the identification signal. FIG. 4 is a block diagram of the main parts of the mobile station. FIG. 5 is a diagram showing the control flow of the reception control section. FIG. 6 is a diagram showing an example of channel switching when a mobile station moves from one service area to another. 1-1 to 1-9...Service area, 2...Base station, 3...Mobile station, 21...Transmission control unit, 22...
Calling signal transmitting section, 23...Identification signal transmitting section, 31...
- Receiving section, 32... Reception control section, 33... Display section. Patent Applicant: Nippon Telegraph and Telephone Corporation Agent, Patent Attorney Nao Ide figure
Claims (1)
の携帯局を共通の無線呼出チャネルを用いて選択的に呼
び出す一以上の基地局とを備えた無線呼出方式において
、 上記基地局は、他のサービスエリアと共通でしかも上記
無線呼出チャネルとは別の無線チャネルを用いて、隣接
するサービスエリア間で互いにタイミングが異なる識別
信号を送信する手段を含み、上記携帯局は、上記識別信
号を受信して自局が存在するサービスエリアに割り当て
られた無線呼出チャネルを識別する手段と、この手段の
出力により受信チャネルをそのサービスエリアに割り当
てられた無線呼出チャネルに切り替える手段とを含む ことを特徴とする無線呼出方式。[Claims] 1. In a radio paging system comprising a large number of mobile stations and one or more base stations that selectively call individual mobile stations moving within a service area using a common radio paging channel. , the base station includes means for transmitting identification signals with mutually different timings between adjacent service areas using a radio channel common to other service areas and different from the radio paging channel; means for receiving the identification signal and identifying the radio paging channel assigned to the service area in which the local station is located; and means for switching the receiving channel to the radio paging channel assigned to the service area based on the output of this means. A wireless paging system characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63050804A JP2683794B2 (en) | 1988-03-04 | 1988-03-04 | Wireless paging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63050804A JP2683794B2 (en) | 1988-03-04 | 1988-03-04 | Wireless paging method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01225237A true JPH01225237A (en) | 1989-09-08 |
| JP2683794B2 JP2683794B2 (en) | 1997-12-03 |
Family
ID=12868960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63050804A Expired - Lifetime JP2683794B2 (en) | 1988-03-04 | 1988-03-04 | Wireless paging method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2683794B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007509537A (en) * | 2003-10-16 | 2007-04-12 | フラリオン テクノロジーズ，インコーポレーテッド | Method and apparatus for improving handoff between sectors and / or cells in a multi-carrier wireless communication system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4839843A (en) * | 1971-09-21 | 1973-06-12 | ||
| JPS5927634A (en) * | 1982-08-05 | 1984-02-14 | Nippon Telegr & Teleph Corp <Ntt> | Wide range mobile radio calling system |
| JPS5936444A (en) * | 1982-08-24 | 1984-02-28 | Matsushita Electric Ind Co Ltd | State display system of radio device |
-
1988
- 1988-03-04 JP JP63050804A patent/JP2683794B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4839843A (en) * | 1971-09-21 | 1973-06-12 | ||
| JPS5927634A (en) * | 1982-08-05 | 1984-02-14 | Nippon Telegr & Teleph Corp <Ntt> | Wide range mobile radio calling system |
| JPS5936444A (en) * | 1982-08-24 | 1984-02-28 | Matsushita Electric Ind Co Ltd | State display system of radio device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007509537A (en) * | 2003-10-16 | 2007-04-12 | フラリオン テクノロジーズ，インコーポレーテッド | Method and apparatus for improving handoff between sectors and / or cells in a multi-carrier wireless communication system |
| JP4690333B2 (en) * | 2003-10-16 | 2011-06-01 | クゥアルコム・インコーポレイテッド | Method and apparatus for improving handoff between sectors and / or cells in a multi-carrier wireless communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2683794B2 (en) | 1997-12-03 |
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