JP2004247919A - Method for establishing synchronous automatic link - Google Patents

Method for establishing synchronous automatic link Download PDF

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JP2004247919A
JP2004247919A JP2003035042A JP2003035042A JP2004247919A JP 2004247919 A JP2004247919 A JP 2004247919A JP 2003035042 A JP2003035042 A JP 2003035042A JP 2003035042 A JP2003035042 A JP 2003035042A JP 2004247919 A JP2004247919 A JP 2004247919A
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line
station
control station
synchronization
link
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JP3747245B2 (en
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Hideyuki Domon
Takafumi Nojima
英之 土門
孝文 野嶌
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Tech Res & Dev Inst Of Japan Def Agency
防衛庁技術研究本部長
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Abstract

<P>PROBLEM TO BE SOLVED: To simultaneously establish a synchronous and a line links with a plurality of subsidiary stations and to speed up re-establishment of the line link. <P>SOLUTION: By performing procedures of scan reception (I) and transmission reception synchronous establishment (II) first, synchronization of the respective subsidiary stations (A to C) with a control station is established. The control station performs frequency selection (IV) on the basis of a result of line quality evaluation (III) and forms a circuit connection by using the selected frequency (V). Even after line disconnection (VII), the synchronization of the respective subsidiary stations (A to C) with the control station is maintained. At the time of link re-establishment (VIII), as it is allowed to start with the line quality evaluation (III), quick line re-establishment is possible. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】 [0001]
【発明の属する技術分野】 BACKGROUND OF THE INVENTION
本発明は、統制局に対する各従属局の同期を確立した上で、統制局と各従属局との間の回線リンクを確立する同期型自動リンク確立(ALE)方法に関する。 The present invention, after establishing the synchronization for each dependent station for the control station, a synchronous type automatic link establishment (ALE) method for establishing a line link between the control station and each slave station.
【0002】 [0002]
【従来の技術及び発明が解決しようとする課題】 A conventional technology and to be Solved by the Invention
従来における同期型ALEでは、統制局に対する従属局の同期及び回線リンクの確立を、従属局毎に個別に実行するようにしていた。 In the synchronous type ALE in the conventional, the establishment of synchronization and channel link dependent station for the control station, had to be performed separately for each dependent station. 従って、従属局がn局あるなら統制局は同期型ALEに係る各手順を最低n回繰り返さねばならなかった。 Accordingly, the dependent station control station if there n stations had to be repeated least n times the respective procedures according to the synchronous ALE. また、一旦回線リンクを切断してしまうと、統制局に対する各従属局の同期状態が非同期状態に復原してしまうため、回線リンクを再び確立するときにも同期確立動作を実行せねばならなかった。 Also, once would disconnect the line link, synchronization status for each dependent station for the control station is for resulting in restored asynchronous state, it had to be performed to be synchronous establishment operation when establishing a line link again . この場合も、統制局は、従属局個数に応じた回数だけ同期型ALEに係る手順を繰り返さねばならない。 Again, control station must repeat the procedure according to the only synchronous ALE number of times corresponding to the dependent stations number.
【0003】 [0003]
本発明は、このような問題点を解決することを課題としてなされたものであり、複数の従属局に対して一括的に同期及び回線リンクを確立でき、かつそれらを再確立する際には一部の手順を省略できるようにすることによって、同期・リンク(再)確立所要時間を短縮することを、その目的の一つとしている。 The present invention has it been made as object to solve such problems, collectively can establish synchronization and line link to the plurality of slave stations, and is the time to re-establish them one by being able to omit the part of the procedure, to reduce the synchronization link (re) establishment time required, and as one of its purposes.
【0004】 [0004]
【課題を解決するための手段】 In order to solve the problems]
この様な目的を達成するために、本発明に係る同期型ALE方法は、(1)初期的には相互に非同期である複数の従属局に対し、複数の回線を順繰りに用いて統制局から信号を送信し、その信号を基準として統制局に対する各従属局の同期を確立する第1の手順と、(2)各従属局が統制局に同期している状態を保ちつつ、上記複数の回線の中からいずれかを統制局から各従属局に対して指定し、各従属局が指定された回線に接続することにより、各従属局と統制局との間の回線リンクを確立する第2の手順と、(3)回線リンクが切断された後も各従属局が統制局に対する同期を保持し又は同期タイミングに関する情報を保持し、回線リンクが切断された後にいずれかの回線による回線リンクを再確立する際には当該同期を引き続き保持し To achieve such purpose, synchronous ALE method according to the present invention, (1) to initially into a plurality of dependent stations are asynchronous to each other, the control station using a plurality of lines in sequence transmits a signal, a first step for establishing synchronization for each dependent station for the control station the signal as a reference, while maintaining the state in which synchronization with the control station (2) each dependent station, the plurality of lines from the control station either out of the specified for each dependent station, by connecting the line to each dependent station is designated, the second to establish a circuit link between the control station and each slave station and procedures, and (3) line link according to any one of the lines after even after the line link is disconnected the dependent station maintains information about holding or synchronization timing synchronization for the control station, the line link is disconnected again It continues to hold the synchronization when establishing は当該保持している情報を利用して同期を確立する第3の手順とを有することを特徴とする。 It is characterized by a third step for establishing synchronization by using the information that the holding.
【0005】 [0005]
このように、本発明においては、第1の手順において複数の従属局に関し統制局との同期及び回線リンクがほぼ一斉に確立されるため、各従属局毎に統制局との同期及び回線リンクを確立する手法に比べ、同期及び回線リンクを確立するのに要する合計の時間が短縮される。 Thus, in the present invention, since the synchronization and line link between the control station relates more subordinate stations in the first step is established substantially simultaneously, a synchronization and channel link to the control station for each slave station comparison with a method of establishing, the total time of that needed to establish the synchronization and line link is shortened. 更に、回線リンクが保持された後も、各従属局が、統制局に対する同期を保持している(又は同期タイミングに関する情報を保持している)。 Moreover, even after the line link is held, each dependent station, (which holds information about or synchronization timing) in which to have retained the synchronization to the control station. 従って、回線リンクを一旦解放した後、いずれかの回線による回線リンクを確立するに当たって、同期確立のための第1の手順から始める必要はなく、回線リンク確立のための第2の手順(好ましくは回線品質評価及び回線選択の手順を含む)から始めることができる。 Therefore, after once releasing the line link, in order to establish a circuit linking with one of the circuit, it is not necessary to start from the first step for establishing synchronization, a second procedure for line link establishment (preferably You may start including the steps of line quality evaluation and line selection). そのため、回線リンクの再確立を短時間で実行可能である。 Therefore, it can be performed in a short time to re-establish the line link.
【0006】 [0006]
【発明の実施の形態】 DETAILED DESCRIPTION OF THE INVENTION
以下、本発明の好適な実施の形態に関し図面に基づき説明する。 Hereinafter, will be described with reference to the drawings relates a preferred embodiment of the present invention.
【0007】 [0007]
図1に、本発明に係る通信システムにおける局の一例構成を示す。 Figure 1 shows an example configuration of a station in the communication system according to the present invention. この図に示す局は、従属局(或いは統制局の無線インタフェース部分)として用いられるものであり、制御器およびデータ端末(以下「端末」と略称)10と無線機12との間にALEモデム14及びデータモデム16を設けた構成を有している。 Station shown in this figure, which is used as a dependent station (or wireless interface portion of the control station), ALE modem 14 between the controller and the data terminal (hereinafter abbreviated as "terminal") 10 and the radio 12 and has a configuration in which a data modem 16. 端末10は使用者等から与えられる情報をデータとしてデータモデム16に供給し、データモデム16はこれを所定の変調方式(例えばFSK)に従い変調して無線機12に供給し、無線機12は変調後の信号を他の局へと無線送信する。 Terminal 10 is supplied to the data modem 16 information provided from the user or the like as the data, the data modem 16 modulates this in accordance with a predetermined modulation scheme (e.g., FSK) is supplied to the radio 12, wireless device 12 is modulated the signal after to another station wirelessly transmits. 無線機12は、他の局からの信号を無線受信しデータモデム16に供給し、データモデム16はこの信号を所定の変調方式に従い復調してデータとして端末10に供給し、端末10はこのデータに基づき使用者等に対し情報を出力・供給する。 Radio 12 supplies a signal from another station in the radio received data modem 16, data modem 16 demodulates the signal in accordance with a predetermined modulation scheme is supplied to the terminal 10 as the data, the terminal 10 the data output & supplies information to a user or the like based on. また、図1に示した局では、統制局・従属局間の同期・回線リンクを確立するため、データモデム16とは別にALEモデム14を設けている。 Further, in the station shown in FIG. 1, for establishing synchronization and line link between the control station-dependent station, it is provided separately from the ALE modem 14 and the data modem 16. 端末10は、使用者からの要求や所定時間の到来・経過等、所定のイベントの発生に応じてALEモデム14を動作させ、ALEモデム14及び無線機12を用いてスキャン受信等を実行する。 Terminal 10, such as the arrival-course of requests and a predetermined time from the user operates the ALE modem 14 in response to the occurrence of a predetermined event, performing a scan receiver or the like using the ALE modem 14 and radio 12. なお、図中の18は無線機12のアンテナであり、他の局との通信に使用される。 Incidentally, 18 in the figure is an antenna of a radio device 12, is used to communicate with other stations.
【0008】 [0008]
統制局・従属局間の同期・回線リンクを確立するための手順の一例を、図2に示す。 An example of a procedure for establishing synchronization and line link between the control station-dependent station, is shown in FIG. この図に示す例では、同期・回線リンクの確立に使用できる回線を周波数f1〜f3の3通り、準備してある。 In the example shown in this figure, three different frequencies f1~f3 line that can be used to establish synchronization and line links, are prepared. システムを構成する全ての局は、初期的には非同期の状態で、それぞれスキャン受信を実行している(I)。 All stations that constitute the system, initially running asynchronously state, the scan reception respectively (I). スキャン受信とは、図示される如く、各回線における信号の有無を回線毎に順繰りに調べるための受信動作であり、“非同期”とは各従属局が受信している周波数が瞬時的に見て一般に一致していないことをさす。 The scan reception, as shown, a reception operation for examining the presence or absence of a signal in each line for each line in turn, the term "asynchronous" is the frequency which each dependent station is received when viewed instantaneously in general, refers to that does not match.
【0009】 [0009]
この状態から各従属局を統制局に同期させる際には、統制局が、各回線を順繰りに使用して同期確立のための所定の信号を送信する(II)。 When synchronizing to the control station to each slave station from this state, control station, using each line in turn transmits a predetermined signal for establishing synchronization (II). 各回線におけるその信号の送信時間は、1回線分のスキャン受信に要する時間に比べ長く設定しておく。 Transmission time of the signal at each line, is set longer than the time required for scanning the reception of one line worth. 各従属局は、状態Iに引き続いてスキャン受信を継続しているため、かかる設定の下では、統制局からの信号の送信が全回線を一巡する間に、全ての従属局が統制局からの信号を受信できる。 Each dependent station, because it continues to scan the received subsequent state I, Under such setting, the transmission of signals from the control station during the cycle through all lines, all the dependent stations from the control station You can receive the signal. 即ち、各従属局は、状態IIが終了するまでには、統制局からの信号に同期しそれを聴取できる同期状態となる。 That is, each dependent station, by the state II is completed, in synchronization with a signal from the control station a synchronization ready to listen to it. 統制局としては信号送信を一巡させるのみでよいため、そのために要する時間は、従属局毎に同期を確立した場合に比べ短くなる。 Since it is only to cycle through the signal transmission as a control station, time required for this, shorter than in the case of establishing the synchronization for each dependent station.
【0010】 [0010]
統制局からの信号の送信が全回線を一巡した時点、即ち統制局に対する各従属局の同期が確立された時点で、統制局は、各回線を順繰りに用いて、回線品質評価のための送受信を実行する(III)。 Time transmission of signals from the control station is after searching all lines, i.e. when the synchronization of the dependent stations is established with respect to the control station, control station, with each line in turn, send and receive for the line quality evaluation the run (III). 即ち、まず、統制局は周波数f1の回線を用いて各従属局に対し信号を送信し、各従属局はこの信号を受信しその結果を従属局A、B、Cの順で順繰りに統制局に返信する。 That is, first, the control station transmits a signal to each slave station using a channel frequency f1, each dependent station subordinate station A results receives this signal, B, the control station in turn in the order of C reply to. この通信を、周波数を変え全回線について順繰りに実行することで、統制局は、全回線の品質を回線毎かつ従属局毎に知ることができる。 This communication, by executing in sequence for all lines changing the frequency, the control station can know the quality of all lines for each line and for each dependent station. 統制局は、この様にして取得した回線品質に関する情報に基づき、もっとも多くの従属局との(良質な)通信を確保できる回線を選び(図では周波数f3の回線)(IV)、その回線を使用する旨を各従属局に知らせ各従属局から順繰りに応答を受け取る(V)。 The control station based on information about the line quality obtained in this way, with the largest number of dependent stations to select the line that can secure (good) communication (line frequency f3 in FIG.) (IV), the line It informs that it will use for each dependent station receives a response in turn from each dependent station (V). これによって統制局・従属局間の回線リンクが確立され、その回線を使用した通信が開始される(VI)。 This line link between the control station, the subordinate station by is established, communication using that line is started (VI).
【0011】 [0011]
通信が終わると回線リンクが切断される(VII)。 Line link is disconnected when the communication ends (VII). 図示されている例では、使用している回線を介して統制局から所定の信号を送信しそれに対する各従属局の応答を統制局が順繰りに受け取ることにより回線が解放される。 In the illustrated example, it sends a predetermined signal from the control station via a line being used for the control station a response for each dependent station to it the line is released by receiving in turn. この後、統制局及び各従属局は、スキャン受信状態に移るものの、状態Iとは異なり、統制局に対する各従属局の同期は保たれている。 Thereafter, the control station and each slave station, but moves to scan the reception state, unlike the state I, the synchronization of the slave stations for the control station is maintained. 即ち、各従属局が、統制局に対する同期を引き続き保持しており(又は同期タイミングに関する情報を記憶しており)、そのためスキャン受信状態とは言っても非同期でのスキャン受信とはならない。 That is, each dependent station (stores information about or synchronization timing) subsequently held and the synchronization to the control station, not a scanning receiver in an Asynchronous Nevertheless Therefore scan reception. 従って、この状態から再度回線リンクを確立する際には、状態IIに係る手順即ち同期確立手順を省略して直ちに状態IIIに係る手順即ち回線品質評価手順に移行できる(VIII)。 Therefore, when establishing a re-line link from this state, skip steps i.e. synchronization establishment procedure according to the state II can be migrated to the procedure i.e. the line quality evaluation procedure immediately according to the state III (VIII). そのため、回線リンクの再確立に要する時間は短くなる。 For this reason, time is short it takes to re-establish the line link.
【0012】 [0012]
【発明の効果】 【Effect of the invention】
以上説明したように、本発明に係る同期型自動リンク確立方法によれば、複数の従属局に対して一括的に同期及び回線リンクを確立でき、かつそれらを再確立する際には一部の手順を省略できるようにすることによって、同期・リンク(再)確立所要時間を短縮可能な効果がある。 As described above, according to the synchronous automatic link establishment method according to the present invention, collectively can establish synchronization and line link to the plurality of slave stations, and is the time to re-establish their part by procedures to be omitted, there is a shortening possible effect the synchronization link (re) establishment duration.
【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS
【図1】本発明の一実施の形態における各局の一例構成を示すブロック図である。 1 is a block diagram showing an example configuration of each station in the embodiment of the present invention.
【図2】本実施の形態における同期型ALE(自動リンク確立)の流れを示すタイミングチャートである。 2 is a timing chart showing the flow of the synchronous ALE in the present embodiment (automatic link establishment).
【符号の説明】 DESCRIPTION OF SYMBOLS
10 端末12 無線機14 ALEモデム16 データモデム18 アンテナ 10 terminal 12 radio 14 ALE modem 16 data modem 18 antenna

Claims (1)

  1. 初期的には相互に非同期である複数の従属局に対し、複数の回線を順繰りに用いて統制局から信号を送信し、その信号を基準として統制局に対する各従属局の同期を確立する第1の手順と、 To initially into a plurality of dependent stations are asynchronous to each other, the transmitted signals from the control station using a plurality of lines in turn, establishes synchronization of each dependent station for the control station the signal as reference 1 and of the procedure,
    各従属局が統制局に同期している状態を保ちつつ、上記複数の回線の中からいずれかを統制局から各従属局に対して指定し、各従属局が指定された回線に接続することにより、各従属局と統制局との間の回線リンクを確立する第2の手順と、 While maintaining the state where the dependent station is synchronized to the control station, that is specified for each slave station from the control station either from the plurality of lines, connected to the line by each dependent station is designated Accordingly, a second procedure to establish a circuit link between the control station and each slave station,
    回線リンクが切断された後も各従属局が統制局に対する同期を保持し又は同期タイミングに関する情報を保持し、回線リンクが切断された後にいずれかの回線による回線リンクを再確立する際には、当該同期を引き続き保持し又は当該保持している情報を利用して同期を確立する第3の手順とを有することを特徴とする同期型自動リンク確立方法。 When after the line link is disconnected the dependent station maintains information about holding or synchronization timing synchronization for the control station, to re-establish the line link according to any of the line after the line link is disconnected, synchronous automatic link establishment method characterized by a third step for establishing synchronization by using the information that continue to hold or the holds the synchronization.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009024083A1 (en) * 2007-08-21 2009-02-26 Huawei Technologies Co., Ltd. Method, device and system for data synchronization of a control session
JP2010532970A (en) * 2007-07-06 2010-10-14 クゥアルコム・インコーポレイテッドQualcomm Incorporated Method and apparatus for supporting a plurality of timing synchronization corresponding to different communication peers
JP2010541307A (en) * 2007-09-14 2010-12-24 ソニー エリクソン モバイル コミュニケーションズ, エービー In a frequency hopping communication system, automatically re-connection of the previously lost connection
US8385316B2 (en) 2007-07-06 2013-02-26 Qualcomm Incorporated Methods and apparatus related to peer to peer communications timing structure
US8599823B2 (en) 2007-07-06 2013-12-03 Qualcomm Incorporated Communications methods and apparatus related to synchronization with respect to a peer to peer timing structure
US8601156B2 (en) 2007-07-06 2013-12-03 Qualcomm Incorporated Methods and apparatus related to peer discovery and/or paging in peer to peer wireless communications

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8601156B2 (en) 2007-07-06 2013-12-03 Qualcomm Incorporated Methods and apparatus related to peer discovery and/or paging in peer to peer wireless communications
JP2010532970A (en) * 2007-07-06 2010-10-14 クゥアルコム・インコーポレイテッドQualcomm Incorporated Method and apparatus for supporting a plurality of timing synchronization corresponding to different communication peers
US8385317B2 (en) 2007-07-06 2013-02-26 Qualcomm Incorporated Methods and apparatus supporting multiple timing synchronizations corresponding to different communications peers
US8385316B2 (en) 2007-07-06 2013-02-26 Qualcomm Incorporated Methods and apparatus related to peer to peer communications timing structure
US8599823B2 (en) 2007-07-06 2013-12-03 Qualcomm Incorporated Communications methods and apparatus related to synchronization with respect to a peer to peer timing structure
WO2009024083A1 (en) * 2007-08-21 2009-02-26 Huawei Technologies Co., Ltd. Method, device and system for data synchronization of a control session
JP2010541307A (en) * 2007-09-14 2010-12-24 ソニー エリクソン モバイル コミュニケーションズ, エービー In a frequency hopping communication system, automatically re-connection of the previously lost connection

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