JPH04249924A - Selective call system - Google Patents

Selective call system

Info

Publication number
JPH04249924A
JPH04249924A JP9110344A JP1034491A JPH04249924A JP H04249924 A JPH04249924 A JP H04249924A JP 9110344 A JP9110344 A JP 9110344A JP 1034491 A JP1034491 A JP 1034491A JP H04249924 A JPH04249924 A JP H04249924A
Authority
JP
Japan
Prior art keywords
data
selective call
signal
sent
receiver
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.)
Withdrawn
Application number
JP9110344A
Other languages
Japanese (ja)
Inventor
Akifumi Akiyama
昌文 秋山
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 JP9110344A priority Critical patent/JPH04249924A/en
Publication of JPH04249924A publication Critical patent/JPH04249924A/en
Withdrawn legal-status Critical Current

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  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To enhance efficiency in data transmission when simplified data is sent to a selective call receiver such as a pocket bell with display. CONSTITUTION:A control station (104) sends out a selective call signal (302-307) first, and the selective call receiver (101, 102) receivng the signal is rung, and also, displays a time (T2) until data is sent out. The owner of the receiver (101, 102) is moved to a place where strong electric field strength can be obtained within that time. The control station (104) sends out the data (308, 309, 310) after the lapse of constant time (T2) after the sending of the selective call signal. The sending of the selective call signal is performed in a form resistant for a transmission error higher than that of the data.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】本発明は、表示付ポケットベルの
ような、選択呼出受信機に簡易なデータを送る一方向の
移動通信方式に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a one-way mobile communication system for transmitting simple data to a selective call receiver, such as a pager with a display.

【0002】0002

【従来の技術】従来の表示付ポケットベルの場合には、
選択呼出信号とデータが一緒に送出されていて、両方が
選択呼出受信機に誤りなく受信されて始めて、受信機に
鳴音を発生させていた。また誤りによる信号の不受信の
確率を減らすために、同一信号を3回送出している。
[Prior Art] In the case of a conventional pager with a display,
The selective call signal and the data were sent together, and only when both were received by the selective call receiver without error could the receiver generate a ringing tone. Furthermore, in order to reduce the probability of not receiving a signal due to an error, the same signal is transmitted three times.

【0003】0003

【発明が解決しようとする課題】しかしながら、送出さ
れるデータの長さが長くなると、同一データを3回送出
するのは極めて効率が悪いことになる。またデータ長が
大きいと誤りの影響もうけやすくなり、3回の送出では
不十分な場合もある。誤りに強くするために強力な誤り
訂正符号を使用することも考えられるが、強力な誤り訂
正符号は、送出する情報量の数倍のデータを付加せねば
ならず、やはり周波数の有効利用には適さない。これら
の問題は、ポケットベルのような、データが受信できた
ことの確認が得られない、一方向の移動通信方式では避
けられないものであった。本発明の目的は上記問題点を
改善し、高い効率でデータを伝送する選択呼出受信方式
を提供することにある。
However, as the length of transmitted data becomes longer, it becomes extremely inefficient to transmit the same data three times. Furthermore, if the data length is large, it is likely to be affected by errors, and three transmissions may not be sufficient. It is possible to use a strong error correction code to make it more resilient to errors, but a strong error correction code requires adding data several times the amount of information to be transmitted, which is still difficult for effective use of frequencies. Not suitable. These problems are unavoidable in one-way mobile communication systems, such as pagers, in which confirmation that data has been received cannot be confirmed. SUMMARY OF THE INVENTION It is an object of the present invention to provide a selective call reception system that improves the above problems and transmits data with high efficiency.

【0004】0004

【課題を解決するための手段】本発明の特徴は、表示式
選択呼出受信機に制御局からデータを送出する選択呼出
方式において、表示式選択呼出受信機に受信電波の電界
強度を表示する機能をもうけ、制御局がデータを送出す
る場合、最初に、選択呼出信号を送出し、該信号を受信
した選択呼出受信機は鳴音すると共にデータが送出され
るまでの時間を表示し、制御局は選択呼出信号の送出か
ら一定時間のタイミングをとった後、データを送出し、
選択呼出信号の送出はデータの送出より、伝送誤りに強
い形式でおこなわれる選択呼出方式にある。
[Means for Solving the Problems] A feature of the present invention is a function of displaying the field strength of received radio waves on the display type selective call receiver in a selective call method in which data is sent from a control station to the display type selective call receiver. When the control station sends data, it first sends out a selective call signal, and the selective call receiver that receives the signal makes a sound and displays the time until the data is sent. transmits data after a certain period of time from the transmission of the selective call signal,
The transmission of selective call signals is performed in a selective call system that is more resistant to transmission errors than the transmission of data.

【0005】[0005]

【作用】本発明は、最初に選択呼出信号のみを強力な誤
り訂正符号を付加したり、または多数回送出し、まもな
くデータが送出されることを移動端末所持者に教え、移
動端末所持者が電界強度の強いところへ移動することの
出来る時間的余裕をとってから、無線回線がよい状態に
なっていることを想定してデータの送出をおこなう。本
方式は、データ長が短い、選択呼出信号のみを、誤りに
強い方式で伝送し、実際の情報は、送出するデータ長が
長くても、それほど強力な誤り訂正符号を付加する必要
ない。また長いデータの多数回送出という無駄な伝送を
行う必要がないため無線回線の周波数の有効利用に適し
た方式である。
[Operation] The present invention first attaches only a strong error correction code to only the selective call signal, or sends it out multiple times to inform the mobile terminal owner that data will be sent soon, so that the mobile terminal owner can After allowing enough time to move to a location with stronger power, send data assuming that the wireless line is in good condition. In this system, only a selective call signal with a short data length is transmitted in an error-resistant manner, and even if the actual information to be transmitted has a long data length, there is no need to add a very strong error correction code. Furthermore, since there is no need to wastefully transmit long data multiple times, this method is suitable for effective use of radio line frequencies.

【0006】[0006]

【実施例】図1は本発明のシステムの全体構成図で、1
01、102は移動端末、103は無線基地局、104
は無線回線制御局、105は交換局、106はデータ端
末である。図2は移動端末のブロック構成図で201は
制御部、202は無線受信部、203は表示部、204
は鳴音部、205はメモリである。図3は無線回線の信
号フォーマットの一例で、301は同期部、302〜3
07は選択信号送出部、308〜310はデータ送出部
である。図1の移動端末101に、データ端末106か
らデータを送出する場合、データ端末106はまず特定
の番号、例えば1XY特番、または特定の市外番号や無
線回線制御局に付加した加入者番号をダイヤルし無線回
線制御局104に交換局105を介し接続する。
[Example] Figure 1 is an overall configuration diagram of the system of the present invention.
01 and 102 are mobile terminals, 103 is a wireless base station, 104
105 is a wireless network control station, 105 is a switching center, and 106 is a data terminal. FIG. 2 is a block diagram of a mobile terminal, in which 201 is a control section, 202 is a wireless reception section, 203 is a display section, and 204
205 is a sound part, and 205 is a memory. FIG. 3 shows an example of the signal format of a wireless line, where 301 is a synchronization part, 302 to 3
07 is a selection signal sending section, and 308 to 310 are data sending sections. When transmitting data from the data terminal 106 to the mobile terminal 101 in FIG. and connects to the radio network control station 104 via the switching center 105.

【0007】次ぎに移動端末101の番号と送出したい
データを無線回線制御局に転送する。無線回線制御局は
、無線基地局103を経由し移動端末101の番号を含
む選択呼出信号を送出する。送出する信号フレーム構成
の一例を図3に示す。通常移動端末は電池の消耗を少な
くするためバッテリーセービングをしながらこの信号を
受信している。すなわち送出されている全時間を受信す
るのでなく、自分の選択呼出信号が送出される可能性の
ある時間のみ受信機を動作させる。受信機に初めて電源
を投入したときは、すべての信号を受信し同期部301
をさがし選択信号送出部の位置をみつける。
Next, the number of the mobile terminal 101 and the data to be sent are transferred to the radio network control station. The radio network control station sends out a selective paging signal including the number of the mobile terminal 101 via the radio base station 103. An example of the structure of the signal frame to be sent is shown in FIG. Typically, mobile terminals receive this signal while saving battery power to reduce battery consumption. That is, instead of receiving all the times that are being transmitted, the receiver is operated only during times when there is a possibility that the selective calling signal of one's own will be transmitted. When the power is turned on to the receiver for the first time, all the signals are received and the synchronization section 301
Find the location of the selection signal transmitter.

【0008】つぎに自分の選択呼出信号が送出されてい
る位置、本例では選択信号送出部302を受信する。そ
の部分に自分への呼出信号がなければ、受信機の電源を
オフしタイマーを動作させ、つぎの自分への選択信号送
出される可能性のある304の時間まで待ち、その時間
に再び受信機の電源を入れる。すなわち受信機は、T1
秒毎に送出される選択呼出信号部302、304、30
6を受信している。本例では移動機を2グループに分け
ている例であり、他のグループの移動機は303、30
5、307を受信している。もし選択呼出信号部の時間
がt秒であるとすると、受信機の待ち受け時間はt/T
1に短縮され電池の消耗を少なくしている。そのため無
線回線制御局104は、移動端末の番号から、この移動
端末がどのグループに属しているかを抽出し、移動端末
101が受信している時間帯である選択呼出部302で
、呼出信号を送出する。この呼出信号は強力な誤り訂正
符号で構成するとともに、次ぎの移動端末101の受信
時間帯である304においてもこの呼出信号を送出する
。この呼出信号には一回目の呼出か二回目の呼出かが判
定できるビットが含まれている。次ぎに回線制御局は一
回目の呼出信号を送出してからT2秒経過したデータ送
出部310で移動端末101へのデータを送出する。 他のデータ送出部308、309には、それぞれT2秒
前に一回目の呼出を行った移動端末に対するデータを送
出することになる。
Next, the user receives the location from which his or her selective calling signal is being transmitted, in this example, the selective signal transmitting section 302. If there is no calling signal for you in that part, turn off the power of the receiver, operate the timer, wait until time 304 when the next selection signal for yourself may be sent, and then turn the receiver again at that time. Turn on the power. That is, the receiver has T1
Selective call signal sections 302, 304, 30 sent every second
6 is being received. In this example, the mobile devices are divided into two groups, and the mobile devices in the other groups are 303 and 30.
5,307 has been received. If the time of the selective call signal part is t seconds, the standby time of the receiver is t/T
1, reducing battery consumption. Therefore, the radio network control station 104 extracts from the mobile terminal number which group this mobile terminal belongs to, and sends out a paging signal in the selective calling section 302 during the time period when the mobile terminal 101 is receiving the signal. do. This paging signal is composed of a strong error correction code, and is also transmitted in the next receiving time slot 304 of the mobile terminal 101. This call signal includes a bit that can determine whether it is the first call or the second call. Next, the line control station transmits data to the mobile terminal 101 at the data transmitter 310 after T2 seconds have elapsed since transmitting the first paging signal. The other data sending units 308 and 309 each send data for the mobile terminal that made the first call T2 seconds ago.

【0009】一方図2で移動端末101の制御部201
が、無線受信部202で選択呼出部302で自端末への
選択呼出信号を受信すると、鳴音部204から呼出音を
送出するとともに、表示部203に「データがT2秒後
に受信されるので、電界強度の強いところで待機せよ」
との表示をおこなう。そして移動端末101は、無線部
202で受信電波の電界強度を測定し、表示部203に
表示する。また時刻が経過する毎に表示のT2秒を、減
少して表示する。移動端末101が選択受信部302で
の呼出信号の受信に失敗した場合には、当然、選択受信
部304を受信し、そこで自移動端末への呼出信号が送
出されていると、同様の鳴音、表示を行うが、表示の「
T2秒後に…」は、「T2−T1秒後に…」となる。 移動端末101のユーザは、この鳴音と表示内容を見て
、もし電界強度が低い場合には、少し移動し、電界強度
の表示が高くなるところを探す。時間表示が0になると
、データを受信することになる。もし無線制御局からの
データ送出がきっかりT2秒後に送出されるのであれば
、このデータには移動端末101の番号を付与する必要
はないが、T2秒後のデータ送出部310のなかの適当
な位置にデータを送出する場合にはそのデータの最初に
移動端末101の番号を付加する必要がある。
On the other hand, in FIG. 2, the control unit 201 of the mobile terminal 101
However, when the selective calling unit 302 of the radio receiving unit 202 receives a selective calling signal to its own terminal, the ringing unit 204 sends out a ring tone and the display unit 203 displays “Data will be received in T2 seconds. Please wait in a place where the electric field strength is strong.
This will be displayed. Then, the mobile terminal 101 measures the field strength of the received radio wave using the radio section 202 and displays it on the display section 203. Also, each time the time elapses, the displayed T2 seconds is decreased and displayed. If the mobile terminal 101 fails to receive the paging signal at the selective receiving section 302, it will naturally receive the paging signal from the selective receiving section 304, and if the paging signal to the own mobile terminal is sent there, a similar ringing sound will occur. , the display is performed, but the display's "
"T2 seconds later..." becomes "T2-T1 seconds later...". The user of the mobile terminal 101 looks at the sound and the displayed content, and if the electric field strength is low, moves a little and looks for a place where the electric field strength is displayed high. When the time display reaches 0, data will be received. If the data is sent from the radio control station exactly after T2 seconds, there is no need to assign the number of the mobile terminal 101 to this data, but if the data is sent out exactly after T2 seconds, it is not necessary to assign the number of the mobile terminal 101 to this data. When transmitting data to a location, it is necessary to add the number of the mobile terminal 101 to the beginning of the data.

【0010】0010

【発明の効果】以上述べたように、本発明は、信号長の
短い選択呼出信号のみを誤りに強い伝送方式で送出し、
移動端末所持者には無線電波の電界強度を表示するとと
もにいつ信号長の長いデータが送出されるかを知らせ、
データが送出される時には電界強度の高い場所に移動出
来る時間的余裕を与えてから、実際のデータを送出する
ため、信号長の長いデータであっても強力な誤り訂正を
必要としないため、高い効率でデータを伝送出来る。と
くにポケットベルのような、一方向の伝送方式で、長い
データを送出する場合には極めて有効である。
[Effects of the Invention] As described above, the present invention transmits only a selective call signal with a short signal length using a transmission method that is robust to errors.
It displays the field strength of wireless radio waves to mobile terminal owners and informs them when data with a long signal length will be transmitted.
When transmitting data, time is given to move to a location with high electric field strength before the actual data is transmitted, so even data with a long signal length does not require powerful error correction. Data can be transmitted efficiently. This is especially effective when sending long data using a one-way transmission method, such as in a pager.

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

【図1】本発明のシステムの全体構成図である。FIG. 1 is an overall configuration diagram of a system of the present invention.

【図2】移動端末のブロック図である。FIG. 2 is a block diagram of a mobile terminal.

【図3】無線回線の信号フォーマットの1例である。FIG. 3 is an example of a signal format of a wireless line.

【符号の説明】[Explanation of symbols]

101、102  移動端末 103  無線基地局 104  無線回線制御局 105  交換局 106  データ端末 201  制御部 202  無線受信部 203  表示部 204  鳴音部 205  メモリ 301  同期部 302〜307  選択信号送出部 308〜310  データ部 101, 102 Mobile terminal 103 Wireless base station 104 Radio line control station 105 Exchange office 106 Data terminal 201 Control section 202 Wireless receiving section 203 Display section 204 Sound part 205 Memory 301 Synchronization part 302-307 Selection signal sending unit 308-310 Data section

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】表示式選択呼出受信機に制御局からデータ
を送出する選択呼出方式において、表示式選択呼出受信
機に受信電波の電界強度を表示する機能をもうけ、制御
局がデータを送出する場合、最初に、選択呼出信号を送
出し、該信号を受信した選択呼出受信機は鳴音すると共
にデータが送出されるまでの時間を表示し、制御局は選
択呼出信号の送出から一定時間のタイミングをとった後
、データを送出し、選択呼出信号の送出はデータの送出
より、伝送誤りに強い形式で行われることを特徴とする
、選択呼出方式。
Claim 1: In a selective call method in which data is sent from a control station to a display-type selective call receiver, the display-type selective call receiver has a function of displaying the field strength of received radio waves, and the control station transmits the data. In this case, first, a selective call signal is sent out, and the selective call receiver that receives the signal sounds and displays the time until the data is sent out, and the control station sends out a selective call signal for a certain period of time after sending out the selective call signal. A selective call method in which data is sent out after timing, and the selective call signal is sent in a format that is more resistant to transmission errors than data sending.
JP9110344A 1991-01-07 1991-01-07 Selective call system Withdrawn JPH04249924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9110344A JPH04249924A (en) 1991-01-07 1991-01-07 Selective call system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9110344A JPH04249924A (en) 1991-01-07 1991-01-07 Selective call system

Publications (1)

Publication Number Publication Date
JPH04249924A true JPH04249924A (en) 1992-09-04

Family

ID=11747571

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9110344A Withdrawn JPH04249924A (en) 1991-01-07 1991-01-07 Selective call system

Country Status (1)

Country Link
JP (1) JPH04249924A (en)

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Effective date: 19980514