JPS60160737A - Emergency interruption correspondence system - Google Patents
Emergency interruption correspondence systemInfo
- Publication number
- JPS60160737A JPS60160737A JP59015658A JP1565884A JPS60160737A JP S60160737 A JPS60160737 A JP S60160737A JP 59015658 A JP59015658 A JP 59015658A JP 1565884 A JP1565884 A JP 1565884A JP S60160737 A JPS60160737 A JP S60160737A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- station
- signal
- slave
- slave station
- 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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/04—Scheduled or contention-free access
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/50—Connection management for emergency connections
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、複数の子局が共通の無線周波を用い、かつ親
局が各子局を個別に選択して各子局と交信する無線シス
テムにおいて、緊急な交信を必要とする子局が他の子局
の交信予定に割込んで交信する場合の緊急割込み交信方
式に関するものである。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a wireless system in which a plurality of slave stations use a common radio frequency, and a master station individually selects each slave station to communicate with each slave station. The present invention relates to an emergency interrupt communication method in which a slave station that requires urgent communication interrupts the communication schedule of another slave station.
従来、この種の無線システムの一例として第１図に示す
ようなものがある。すなわち、１台の親局ｌに対して複
数の子局２−１．・・・２−１．・・・２−ｈを配置し
、各子局２−１〜２−ｈＫは共通の無線周波を割当て、
親局ｌから子局の無線周波とは別の無線周波で各子局２
−１〜２−ｈを個別に呼び出し、この呼び出した子局（
２−１〜２−ｈのいずれか）と親局１との間で交信する
ものである。この場合、１つの子局が交信中の時には他
の子局は通信禁止状態（ロック状態）となっておシ、発
信することができない。Conventionally, there is one shown in FIG. 1 as an example of this type of wireless system. That is, for one master station l, there are multiple slave stations 2-1. ...2-1. ...2-h is arranged, and each slave station 2-1 to 2-hK is assigned a common radio frequency,
From the master station I to each slave station 2 using a radio frequency different from that of the slave stations.
-1 to 2-h individually, and this called slave station (
2-1 to 2-h) and the master station 1. In this case, when one slave station is communicating, the other slave stations are in a communication prohibited state (locked state) and cannot make a call.
ところで、このような無線システムにおいては子局２−
１〜２−ｈの交信は親局１の選択によって許可されるだ
め、子局２−１〜２−ｈから親局１を自由に呼び出して
交信することはできない。By the way, in such a wireless system, the slave station 2-
Since communication between 1 and 2-h is permitted by the selection of master station 1, slave stations 2-1 through 2-h cannot freely call master station 1 for communication.
しかし、例えば防災行線無線システム等では各子局２−
１〜２−ｈから親局１に対して緊急に連絡したい場合が
たびたび発生する。However, for example, in a disaster prevention line wireless system, each slave station 2-
1 to 2-h often want to urgently contact the master station 1.
そこで、このような緊急交信要求に対応するため、緊急
交信要求信号を発信しておき、親局１と他の子局との交
信が瞬断したタイミングで親局１に緊急交信要求信号を
捕捉させる方法がとられている。Therefore, in order to respond to such emergency communication requests, an emergency communication request signal is transmitted, and the emergency communication request signal is captured by the master station 1 at the timing when communication between the master station 1 and other slave stations is momentarily interrupted. A method is being taken to
すなわち、第２図に示すタイムチャートを用いて説明す
ると、同図（ａ）の区間ＴＩに示す子局２−１の交信中
に、子局２−ｉに緊急交信の必要性が生じたものとする
と、同図（ｂ）に示すようなタイミングｔで子局２−１
から緊急交信要求信号を発信させ、親局ｌと子局２−１
との交信瞬断時間Ｔ２において親局ｌにこの緊急交信要
求信号を捕捉させ、親局ｌに子局２−ｉからの緊急交信
要求を登録し、次の交信予定の子局に割込で子局２−ｉ
を親局ｌに選択させて交信する方法である。なお、第２
図（ｃ）は親局１の交信状態を示し、区間Ｔ３は子局２
−１との交信状態、区間Ｔ４は子局２−ｉからの緊急割
込み交信要求の捕捉状態を示している。That is, to explain using the time chart shown in FIG. 2, when the need for emergency communication arises in the slave station 2-i during the communication with the slave station 2-1 shown in section TI in FIG. 2(a). Then, at timing t as shown in FIG. 2(b), slave station 2-1
An emergency communication request signal is transmitted from the master station 1 and the slave station 2-1.
During instantaneous communication interruption time T2, the master station l captures this emergency communication request signal, registers the emergency communication request from the slave station 2-i in the master station l, and interrupts the slave station with which the next communication is scheduled. Slave station 2-i
This is a method of having the master station l select and communicate with each other. In addition, the second
Figure (c) shows the communication status of the master station 1, and section T3 is the communication state of the slave station 2.
-1, and section T4 indicates a state in which an emergency interrupt communication request from slave station 2-i is captured.
ところが上記のような方法では、子局２−１の緊急交信
要求信号は該信号が親局ｌに捕捉された後子局２−１と
の交信が開始されるまで発（Ｎ Ｌ、たままとなってい
るため、子局２−１に比べて子局２−ｉの伝搬条件が良
好な場合には、子局２−１の緊急交信要求侶号が子局２
−１の交信信号に混信し、交信妨害を与えるという問題
がおる。また同様に、複数の子局から緊急交信要求信号
が発信された場合、伝搬条件の良好な方の子局の緊急要
求信号が優先される結果が生じ、各子局相互間に緊急交
信要求に対する応答度合にアンバランスが生じるという
問題がある。However, in the method described above, the emergency communication request signal of the slave station 2-1 is not emitted until communication with the slave station 2-1 is started after the signal is captured by the master station (NL). Therefore, when the propagation conditions of slave station 2-i are better than that of slave station 2-1, the emergency communication request signal of slave station 2-1 is transmitted to slave station 2-i.
There is a problem in that it interferes with the communication signal of -1 and causes communication interference. Similarly, when emergency communication request signals are transmitted from multiple slave stations, priority is given to the emergency request signal of the slave station with better propagation conditions. There is a problem in that the degree of response becomes unbalanced.
本発明は上記欠点を除去し、交信中の他の子局に妨害を
与えることなく、各子局平等に緊急交信の機会が与えら
れるようにした緊急割込み交信方式を提供することを目
的とする。An object of the present invention is to eliminate the above-mentioned drawbacks and provide an emergency interrupt communication system that allows each slave station to have an equal opportunity for emergency communication without interfering with other slave stations in communication. .
この発明では、各子局に緊急割込み交信要求を発信する
タイムスロットを個別に割当て、緊急割込み交信時には
この割当てタイムスロット内で自己の子局番号を示す４
ｊ号を親局に対して発信し、親局に緊急割込み交信要求
を登録することにょシ上記目的を達成している。In this invention, a time slot for transmitting an emergency interrupt communication request is individually assigned to each slave station, and at the time of emergency interrupt communication, the slave station indicates its own slave station number within this assigned time slot.
The above purpose is achieved by transmitting No. j to the master station and registering an emergency interrupt communication request in the master station.
第３図は本発明による緊急割込み交信方式を適用した子
局２−１〜２−ｈの一実施例を示すブロック図であシ、
第４図は親局ｌの一実施例を示すブロック図である。こ
れらの図において、子局２−１〜２−ｈは、親局ｌから
第１の無線周波で交信信号を受信し、また第２の無線周
波で交（８信号を親局ｌに送信する無線機２０．交信路
形成や解除のための空線、ロック信号などの制御信号を
送受信する制御信号送受信回路２１．子局を交信禁止状
態とするための親局ｌからの口、り信号を検出するロッ
ク信号検出回路２２、口、り信号の検出信号により計時
動作を開始する計時回路２３、緊急割込み交信要求を行
うための操作回路２４、緊急割込み交信要求の発信子局
番号を示す多周波組合せ信号を発生する信号送出回路２
５、操作回路２４において緊急割込み交信要求操作が行
われた時に計時回路２３から出力される発信時間制御信
号および信号送出回路２５から出力される多周波組合せ
信号を制御信号送受信回路２１に与えるｒ−）回路２６
とから構成されている。FIG. 3 is a block diagram showing an embodiment of slave stations 2-1 to 2-h to which the emergency interrupt communication method according to the present invention is applied.
FIG. 4 is a block diagram showing one embodiment of the master station l. In these figures, the slave stations 2-1 to 2-h receive communication signals from the master station l on the first radio frequency, and transmit communication signals (8 signals to the master station l) on the second radio frequency. Radio device 20. Control signal transmitting/receiving circuit that transmits and receives control signals such as idle wires and lock signals for forming and canceling communication channels 21. Control signal transmitting/receiving circuit that transmits and receives control signals such as lock signals and the like for forming and canceling communication channels 21. A lock signal detection circuit 22 for detecting a lock signal, a clock circuit 23 for starting a timing operation in response to a detection signal of an opening/closing signal, an operation circuit 24 for issuing an emergency interrupt communication request, and a multi-frequency signal indicating the originating slave station number of the emergency interrupt communication request. Signal sending circuit 2 that generates a combination signal
5. Giving the control signal transmitting/receiving circuit 21 the transmission time control signal outputted from the clock circuit 23 and the multifrequency combination signal outputted from the signal sending circuit 25 when the emergency interrupt communication request operation is performed in the operating circuit 24; ) circuit 26
It is composed of.
一方、親局１は子局２−１〜２−にと同様の無線機ｌＯ
および制御信号送受信回路１１、子局２−１〜２−ｈか
らの緊急割込み交信要求信号を検出する割込み検出回路
１２、緊急割込み交信要求のあった子局を識別して要求
発生順に登録する登録回路１３、緊急割込み交信要求の
登録順に子局の選択呼出し信号を発生し、制御信号送受
信回路１１に子局の選択呼出しを行わせる呼出し回路１
４とから構成されている。On the other hand, the master station 1 has the same radio equipment as the slave stations 2-1 to 2-2-.
and a control signal transmission/reception circuit 11, an interrupt detection circuit 12 that detects emergency interrupt communication request signals from slave stations 2-1 to 2-h, and a registration that identifies slave stations that have received emergency interrupt communication requests and registers them in the order in which the requests occur. Circuit 13: a calling circuit 1 that generates selective calling signals for slave stations in the order of registration of emergency interrupt communication requests and causes the control signal transmitting/receiving circuit 11 to selectively call slave stations;
It is composed of 4.
次に、第５図および第６図に示すタイムチャートを参照
して緊急割込み交信要求が親局１に登録されるまでの動
作を説明する。Next, the operation until the emergency interrupt communication request is registered in the master station 1 will be explained with reference to the time charts shown in FIGS. 5 and 6.
第５図において、（ａ）は子局２−１の交信状態、（ｂ
）は子局２−ｉの交信状態、（ｃ）は親局１の交信状態
、（ｄ）は子局２−ｈの交信状態を示しているが、はじ
めに親局ｌから全ての子局２−１〜２−ｈに対してこれ
らの子局の交信を禁止するだめのロック信号（記号Ａで
示している）が発信される。これによシ、全ての子局２
−１〜２−ｈは交信不能の状態になるが、このロック信
号はロック信号検出回路２２により検出され、その検出
信号にょシ計時回路２３の計時動作が開始される。In FIG. 5, (a) shows the communication state of slave station 2-1, and (b)
) shows the communication status of slave station 2-i, (c) shows the communication status of master station 1, and (d) shows the communication status of slave station 2-h. A lock signal (indicated by symbol A) is transmitted to terminals -1 to 2-h to prohibit communication with these slave stations. In this case, all slave stations 2
-1 to 2-h are in a communication disabled state, but this lock signal is detected by the lock signal detection circuit 22, and upon receipt of this detection signal, the clock circuit 23 starts the timing operation.
この後、親局ｌは子局２−１に対する選択呼出し信号（
記号Ｂで示している）を発信する。すると、これに応答
して子局２−１から応答信号（記号Ｂ′で示している）
が発信されるので、親局１はこの応答信号を確認した後
子局２−１との間での交信を開始する。第５図（、）
、 （ｃ）の区間ＴＩが親局１と子局２−１との交信期
間である。After this, the master station 1 sends a selective paging signal (
(indicated by symbol B). Then, in response to this, a response signal (indicated by symbol B') is sent from slave station 2-1.
is transmitted, and after confirming this response signal, the master station 1 starts communication with the slave station 2-1. Figure 5 (,)
, (c) is the period of communication between the master station 1 and the slave station 2-1.
このような親局ｌと子局２−１との間での交信期間中に
、例えば子局２−ｉで記号Ｃで示すタイミングにおいて
緊急割込み交信要求の操作が行われたとすると、この場
合の操作信号は操作回路２４で保持されてダート回路２
６に供給されるが、計時回路２３の計時値が予め定めら
れた時間（例えば３分程度）に達すると、計時回路２３
から信号送出回路２６の起動信号が出力されると共に、
多周波組合せ信号の発信時間および発信タイミングを規
定する発信時間制御信号が送出される。すると、発信時
間制御信号は操作回路２４で保持されている緊急割込み
交信要求の操作信号と論理積がとられて制御信号送受信
回路２１に供給される。For example, if an emergency interrupt communication request operation is performed at the slave station 2-i at the timing shown by symbol C during the communication period between the master station l and the slave station 2-1, then in this case, The operation signal is held in the operation circuit 24 and sent to the dart circuit 2.
However, when the clock value of the clock circuit 23 reaches a predetermined time (for example, about 3 minutes), the clock circuit 23
A starting signal for the signal sending circuit 26 is output from the
A transmission time control signal is sent that defines the transmission time and transmission timing of the multi-frequency combination signal. Then, the transmission time control signal is logically ANDed with the operation signal of the emergency interrupt communication request held in the operation circuit 24, and is supplied to the control signal transmission/reception circuit 21.
また、多周波組合せ信号すなわち緊急割込み交信要求の
子局番号信号もダート回路２６を介して制御信号送受信
回路２１に供給される。Further, a multi-frequency combination signal, that is, a slave station number signal of an emergency interrupt communication request, is also supplied to the control signal transmitting/receiving circuit 21 via the dart circuit 26.
ここで、計時回路２３から出力される発信時間制御信号
は、第６図に示すように、親局ｌとの交信が瞬断する時
間Ｔ２を各子局２−１〜２−ｈにそれぞれ対応して分割
した複数のタイムスロットのうち自局に対応したタイム
スロットにおいて発生されるようになっている。そして
、計時回路２３は親局ｌから全ての子局２−１〜２−ｈ
に同時に送信されるロック信号によって計時動作を同期
して開始するようになっている。Here, as shown in FIG. 6, the transmission time control signal outputted from the clock circuit 23 corresponds to the time T2 at which the communication with the master station l is momentarily interrupted for each of the slave stations 2-1 to 2-h. It is generated in the time slot corresponding to the own station among the plurality of time slots divided by the above. The clock circuit 23 clocks all the slave stations 2-1 to 2-h from the master station l.
The clocking operation is started in synchronization with a lock signal sent at the same time.
このため、子局２−ｉの緊急割込み交信要求操作に基づ
く子局番号信号（多周波組合せ信号）は、時間Ｔ！の中
の当該子局２−ｉに対応するタイミングで無線機２ｏが
ら発信されるものとなる。Therefore, the slave station number signal (multifrequency combination signal) based on the emergency interrupt communication request operation of slave station 2-i is transmitted at time T! It is transmitted from the radio 2o at a timing corresponding to the slave station 2-i in the above.
従って、このように緊急割込み交信要求の発信タイミン
グを各子局別に割当てることにょシ、親局ｌに対して同
時に複数の緊急割込み交信要求が与えられることはなく
なシ、伝搬条件の差異等による緊急割込み交信の機会の
不平等をなくすことができる。また、計時回路２３の計
時値は、親局ｌと任意の子局との交信がＷ１４断するま
での時間と同等程度に設定されるため、親局１が他の子
局との交信中に緊急割込み交信要求信号が発信されるこ
とはなくなシ、交信妨害を与えることもない。Therefore, by allocating the transmission timing of emergency interrupt communication requests to each slave station in this way, multiple emergency interrupt communication requests will not be given to the master station at the same time, and due to differences in propagation conditions, etc. Inequalities in opportunities for emergency interrupt communication can be eliminated. In addition, the time value of the clock circuit 23 is set to be approximately equal to the time taken until the communication between the master station 1 and any slave station is interrupted W14, so that while the master station 1 is communicating with another slave station, An emergency interrupt communication request signal is not transmitted, and communication interference is not caused.
なお、緊急割込み交信要求時に発信する子局番号信号は
ＦＳＫ変調信号などを用いることもできる。Note that an FSK modulated signal or the like may be used as the slave station number signal transmitted at the time of an emergency interrupt communication request.
以上説明したように本発明は、各子局に緊急割込み交信
要求を発信するタイムスロットを個別に割当て、緊急割
込み交信時にはこの割当てタイムスロット内で自己の子
局番号を示す信号を親局に対して発信し、親局に緊急割
込み交信要求を登録するようにしたため、交信中の他の
子局に妨害を与えることなく、各子局平等に緊急交信の
機会を与えることシ五できる。従って、マルチスキャン
アクセス方式の防災行政無線システム等に適用すれば極
めて有益な効果が期待できる。As explained above, the present invention individually allocates a time slot for transmitting an emergency interrupt communication request to each slave station, and at the time of emergency interrupt communication, sends a signal indicating its own slave station number to the master station within this allocated time slot. Since the emergency interrupt communication request is registered in the master station, each slave station can be given an equal opportunity for emergency communication without interfering with other slave stations in communication. Therefore, extremely beneficial effects can be expected if applied to a disaster prevention administrative radio system using a multi-scan access method.
第１図は、従来の無線システムの一例を示す図、第２図
は従来の緊急割込み交信時の動作を説明するだめのタイ
ムチャート、第３図は本発明を適用した子局の一実施例
を示すブロック図、Ｍ４図は親局の一実施例を示すブロ
ック図、第５図および第６図は緊急割込み交信時の動作
を説明するためのタイムチャートである。
１ ・・・親局、２−１〜２− ｈ ・・・子局、１０
．２０・・・無線機、１１．２１・・・制御信号送受信
回路、１３・・・登録回路、１４・・・呼出し回路、２
２・・・ロッり信号検出回路、２３・・・計時回路、２
４・・・操作回路、２５・・・信号送出回路、２６・・
・ｆ−ト回路。
第１図
第２図
第３図
第４図
第５図Fig. 1 is a diagram showing an example of a conventional wireless system, Fig. 2 is a time chart for explaining the operation during conventional emergency interrupt communication, and Fig. 3 is an example of a slave station to which the present invention is applied. FIG. M4 is a block diagram showing an embodiment of the master station, and FIGS. 5 and 6 are time charts for explaining operations during emergency interrupt communication. 1...Master station, 2-1 to 2-h...Slave station, 10
．． 20... Radio device, 11.21... Control signal transmission/reception circuit, 13... Registration circuit, 14... Calling circuit, 2
2... Lock signal detection circuit, 23... Timing circuit, 2
4... Operating circuit, 25... Signal sending circuit, 26...
・f-to circuit. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5
Claims (2)
各子局を個別に選択して各子局と交信する無線システム
において、各子局に緊急割込み交信要求を発信するタイ
ムスロットを個別に割当て、緊急割込み交信時にはこの
割当てタイムスロット内で自己の子局番号を示す信号を
親局に対して発信し、親局に緊急割込み交信要求を登録
することを特徴とする緊急割込み交信方式。(1) In a wireless system in which multiple slave stations use a common radio frequency and the master station selects each slave station individually to communicate with each slave station, the time to send an emergency interrupt communication request to each slave station. An emergency interrupt characterized in that slots are individually assigned, and when emergency interrupt communication is performed, a signal indicating the own slave station number is transmitted to the master station within the assigned time slot, and an emergency interrupt communication request is registered in the master station. Communication method.
に発振される同期用の信号によって計時動作を開始する
計時手段の出力を基に各子局側に割当てることを特徴と
する特許請求の範囲第（０項記載の緊急割込み交信方式
。(2) A patent claim characterized in that time slots are assigned to each slave station based on the output of a timekeeping means that starts a timekeeping operation by a synchronization signal simultaneously oscillated from the master station to each slave station. Range No. (Emergency interrupt communication method described in item 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59015658A JPS60160737A (en) | 1984-01-31 | 1984-01-31 | Emergency interruption correspondence system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59015658A JPS60160737A (en) | 1984-01-31 | 1984-01-31 | Emergency interruption correspondence system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60160737A true JPS60160737A (en) | 1985-08-22 |
Family
ID=11894829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59015658A Pending JPS60160737A (en) | 1984-01-31 | 1984-01-31 | Emergency interruption correspondence system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60160737A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04345339A (en) * | 1991-05-23 | 1992-12-01 | Yamatake Honeywell Co Ltd | Communication method in control system |
| JPH0730943A (en) * | 1993-07-07 | 1995-01-31 | Nec Corp | Base station with slot securing function for redialing at fault interruption |
| US5678188A (en) * | 1993-09-14 | 1997-10-14 | Sony Corporation | Emergency message communication method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53133316A (en) * | 1977-04-27 | 1978-11-21 | Hitachi Denshi Ltd | Urgent interruption communication system |
-
1984
- 1984-01-31 JP JP59015658A patent/JPS60160737A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53133316A (en) * | 1977-04-27 | 1978-11-21 | Hitachi Denshi Ltd | Urgent interruption communication system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04345339A (en) * | 1991-05-23 | 1992-12-01 | Yamatake Honeywell Co Ltd | Communication method in control system |
| JPH0730943A (en) * | 1993-07-07 | 1995-01-31 | Nec Corp | Base station with slot securing function for redialing at fault interruption |
| US5678188A (en) * | 1993-09-14 | 1997-10-14 | Sony Corporation | Emergency message communication method |
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