JP2008263464A - Mobile communicating method and communication system - Google Patents

Mobile communicating method and communication system Download PDF

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JP2008263464A
JP2008263464A JP2007105430A JP2007105430A JP2008263464A JP 2008263464 A JP2008263464 A JP 2008263464A JP 2007105430 A JP2007105430 A JP 2007105430A JP 2007105430 A JP2007105430 A JP 2007105430A JP 2008263464 A JP2008263464 A JP 2008263464A
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base station
mobile
station
voice
zone
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Shigetoshi Arahata
荒畑成利
Kiyotaka Mori
森清隆
Takashi Toyoguchi
豊口敬
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Hitachi Ltd
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Hitachi Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To receive voice at a traveling vehicle side without any break when a train during speech communication travels between radio base stations in voice communication between fixed telephone networks connected to the traveling vehicle such as a train in a radio communication section. <P>SOLUTION: The traveling vehicle traveling on a track such as a train previously makes a reservation for a voice channel to be used in speech communication in the next advancing radio base station, and a voice signal transmitted in the present base station zone is caused to flow toward the next base station so that the traveling vehicle can receive voice signal at the same time when the traveling vehicle advances into the next base station. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は軌道上を線的に移動する移動体と呼の接続通信を行う移動体通信に係り、特に、通話中の移動体が基地局間を移動した際に、地上電話網より送出される音声信号を移動体側で途切れることなく受信する移動体通信制御に関する。   The present invention relates to mobile communication that performs call connection communication with a mobile body that moves linearly on an orbit, and is transmitted from the ground telephone network when a mobile body that is making a call moves between base stations. The present invention relates to mobile communication control for receiving audio signals without interruption on the mobile side.

新幹線等の進行速度の速い列車の移動体―地上間の通話では、基地局が管轄する無線区間におけるハンドオーバが生じる度に移動先の無線基地局において空き音声チャネルを検索し、回線を切替える処理を行うと、その時間に列車が長距離を移動してしまい、移動体側では無音の発生または回線切断となってしまう可能性がある。そのため無線基地局を複数管轄する統制局では、使用中の音声チャネルを前もって次無線基地局(以下、基地局)で予約(閉塞)しておき、列車の移動先基地局において列車の進入を検知すると、予め予約されている回線に切替え、該音声チャネルを用いて通話を継続させることで回線切断を回避する技術が特許文献１に開示されている。   In a train-ground call such as a Shinkansen that has a fast traveling speed, every time a handover occurs in a radio section under the jurisdiction of a base station, a search is made for a free voice channel in the target radio base station and the process of switching the line is performed. If this is done, the train may travel a long distance at that time, and there is a possibility that silence will occur or the line will be cut off on the moving body side. Therefore, a control station that has multiple radio base stations reserves (blocks) the voice channel in use at the next radio base station (hereinafter referred to as the base station) in advance, and detects the train entry at the destination base station of the train. Then, Patent Document 1 discloses a technique for avoiding line disconnection by switching to a reserved line and continuing a call using the voice channel.

特開平3-185938号公報Japanese Patent Laid-Open No. 3-185938

しかし、列車が基地局間を移動した際、統制局が移動前基地局との間の回線を移動先基地局と
の間の回線へ切替えている間は微小な時間であるが、移動体内の電話機を使用する通話者には無音として受聴される時間が存在する。さらにこの問題は、統制局管轄基地局間を列車が移動した際には統制局間の回線も切替えるため、同一統制局管轄内基地局間の移動に比べ、さらに長い時間無音として受聴されるという問題がある。 However, when the train moves between base stations, it is a very short time while the control station switches the line with the base station before movement to the line with the destination base station. A caller who uses a telephone has time to be heard as silence. Furthermore, the problem is that when the train moves between base stations under control of the control station, the line between the control stations is also switched, so that it is heard as silence for a longer time than when moving between base stations in the same control station. There's a problem.

本発明は、上記課題を解決するためになされたもので、進行速度の速い列車の移動体―地上間の通話において通話の途切れを極小化し、音声信号が移動体側で受信できるまでの音声の無音時間を短縮できる無線通信システムを提供することを目的とする。   The present invention has been made to solve the above-described problem, and minimizes the interruption of a call in a call between a moving body and a ground of a train having a high traveling speed, and silence of a voice until a voice signal can be received on the mobile side. An object of the present invention is to provide a wireless communication system capable of reducing time.

上記課題を解決するため、統制局では列車等の移動体進行方向の次基地局ゾーンへ回線を接続しておき、予め該移動体が使用している音声チャネルを使用して音声信号を次基地局ゾーンにも同様に流すことにより、移動体が次基地局ゾーンへ移動しても移動体側で音声を途切れること無く受信可能とする。従って、基地局間、統制局間を移動体が移動したとしても列車内端末からは音声は途切れることなく、より高品質なサービスを提供可能とする。   In order to solve the above problem, the control station connects a line to the next base station zone in the traveling direction of the moving body such as a train, and uses the voice channel used by the moving body in advance to transmit the voice signal to the next base station. By flowing in the station zone in the same manner, even if the mobile body moves to the next base station zone, it is possible to receive the voice without interruption on the mobile body side. Therefore, even if the moving body moves between the base stations and the control stations, the voice is not interrupted from the terminal in the train, and a higher quality service can be provided.

統制局において通話中の移動局が次基地局ゾーンへ移動することを認識後、通話回線を切替え、音声信号が移動体側で受信できるまでの音声の無音時間を短縮できることが効果となる。
また、本発明は線的に移動する移動体と固定電話網間の通話の開始から終了まで同一チャネルを用いて通話を行い、且つ次に進入する無線基地局ゾーンにて該音声チャネルを閉塞している音声通信方法には通話の途切れを極小化する効果がある。 After recognizing that the mobile station in a call moves to the next base station zone in the control station, it is effective to switch the call line and shorten the silent time until the voice signal can be received on the mobile body side.
In addition, the present invention performs a call using the same channel from the start to the end of a call between a mobile body moving linearly and the fixed telephone network, and blocks the voice channel in the next radio base station zone. The voice communication method has the effect of minimizing the interruption of the call.

以下本発明の一実施例をさらに詳細に説明する。   Hereinafter, an embodiment of the present invention will be described in more detail.

第1図は、本発明を適用する移動体通信方法の一部を示すブロック構成図である。
第１図において、1は列車等の移動体、2は無線回線を含む伝送路3と通話をする移動体1が自己の電波ゾーン内に存在する基地局4とを介して、移動体1内にある移動局11と鉄道会社電話網5及び公衆電話網6の間を交換、接続し、複数の基地局を統括する統制局電話交換機、7は鉄道会社電話網5に加入している電話機であり、8は公衆電話網に加入している電話機である。また、9は移動体が通話中に統制局管轄間を移動した際に通話を継続させるために用いる追跡回線である。なお、移動局11は、業務電話機12及び公衆電話機13を収容する。 FIG. 1 is a block diagram showing a part of a mobile communication method to which the present invention is applied.
In FIG. 1, 1 is a mobile body such as a train, 2 is a mobile station 1 that communicates with a transmission line 3 including a wireless line, and a base station 4 that exists in its own radio zone. The mobile station 11 is connected to the railway company telephone network 5 and the public telephone network 6, and is connected to and connected to the control station telephone exchange to supervise a plurality of base stations, and 7 is a telephone that subscribes to the railway company telephone network 5. Yes, 8 is a telephone set subscribing to the public telephone network. Reference numeral 9 denotes a tracking line used to continue the call when the mobile body moves between the control station jurisdictions during the call. The mobile station 11 accommodates the business telephone 12 and the public telephone 13.

第2図は、従来方法(特開平3-185938)において地上電話網と通話中の移動体1が統制局Ａ管轄内の基地局Ａゾーンに存在し、その後通話状態のまま該統制局管轄内の基地局Ｂゾーンへ移動した際の通話継続手順を示すシーケンスである。
以下、手順を詳細に説明する。第2図のシーケンスでは、移動局及び地上電話網は省略してあるが、地上電話網と統制局間の音声信号は同一の信号が送受信されるものとし、また移動局２と基地局Ａ及び基地局Ｂとの間の音声信号も同一の信号が流れることとする(以降、第3図、第4図、第5図も同様)。 FIG. 2 shows that in the conventional method (Japanese Patent Laid-Open No. 3-185938), the mobile unit 1 in communication with the terrestrial telephone network exists in the base station A zone within the jurisdiction of the control station A, and then remains in the call state within the control station It is a sequence which shows the call continuation procedure at the time of moving to the base station B zone.
The procedure will be described in detail below. In the sequence of FIG. 2, the mobile station and the terrestrial telephone network are omitted, but the same signal is transmitted and received between the terrestrial telephone network and the control station, and the mobile station 2 and the base station A and It is assumed that the same signal flows in the audio signal with the base station B (hereinafter, the same applies to FIGS. 3, 4 and 5).

まず、統制局は移動体1と地上電話網との間の呼を受付けると(第2図 6)、制御チャネル4を使用して基地局Ａへ全閉塞信号7を、同様に基地局Ｂへ全閉塞信号8を送出し、通話で使用する音声チャネル5を他の移動体において使用不可とする。その後、移動体内の移動局2と統制局において通話前の制御情報の送受信を行い(第2図 9)、通話状態へ移行する。通話開始後、基地局Ａは移動体1からの音声信号10を受信している間、制御チャネル4を使用し、移動体1において音声チャネル5を使用中であることを示す話中信号11を統制局へ送出する。この時、基地局Ｂゾーンは全閉塞ゾーンとなっており、通話中の移動体１が基地局Ｂゾーンへ移動することを考慮し、基地局Ｂゾーンで移動体1からの話中信号12を常時監視している。その後、移動体1が基地局Ａゾーンから基地局Ｂゾーンに移動した場合(第2図 3)、統制局は基地局Ｂから音声信号及び話中信号12を受信するので、移動体1が基地局Ｂゾーンへ移動したと見なし、統制局は基地局Ｂへ回線を切替える(第2図 13)。回線を切替えると同時に音声信号14が統制局から基地局Ｂへ送出され、移動体1に音声信号が届く。しかし、移動体1内の移動局2では、基地局Ｂゾーンへ移動後、統制局が基地局Ｂへ移動したことを認識し、回線を切替え、音声信号14が移動局2において受信するまでは移動体1内の電話機では無音ととして受聴される(第2図 15)。   First, when the control station accepts a call between the mobile unit 1 and the terrestrial telephone network (FIG. 2), the control channel 4 is used to send a total block signal 7 to the base station A, and similarly to the base station B. A total block signal 8 is sent out, and the voice channel 5 used in the call is disabled in other mobile units. Thereafter, the mobile station 2 and the control station in the moving body transmit / receive control information before a call (FIG. 2), and shift to a call state. After the call is started, the base station A uses the control channel 4 while receiving the voice signal 10 from the mobile unit 1, and sends a busy signal 11 indicating that the mobile unit 1 is using the voice channel 5. Send to the control station. At this time, the base station B zone is a completely blocked zone, and the busy signal 12 from the mobile unit 1 is sent in the base station B zone in consideration of the movement of the mobile unit 1 in the call to the base station B zone. It is constantly monitored. Thereafter, when the mobile unit 1 moves from the base station A zone to the base station B zone (FIG. 2), the control station receives the voice signal and the busy signal 12 from the base station B. Assuming that the station has moved to the station B zone, the control station switches the line to the base station B (FIG. 2). At the same time when the line is switched, the audio signal 14 is sent from the control station to the base station B, and the audio signal reaches the mobile unit 1. However, the mobile station 2 in the mobile 1 recognizes that the control station has moved to the base station B after moving to the base station B zone, switches the line, and receives the audio signal 14 at the mobile station 2. The telephone in the mobile unit 1 is heard as silence (FIG. 2).

第3図は、通話中の移動体が同一統制局管轄内の基地局間を移動する際、本発明を実現するシーケンス図であり、第3図を用いて詳細を説明する。
まず、統制局は移動体1と地上電話網間の呼を受付けると(第3図 6)、制御チャネル4を使用して基地局Ａへ全閉塞信号7を、基地局Ｂへ全閉塞信号8を送出する。この時、統制局から基地局Ｂへの回線を接続し、基地局Ａへ送出する音声信号を基地局Ｂへ送出できるよう準備する(第3図 9)。その後、移動体内の移動局2と統制局において通話前の制御情報の送受信を行い(第3図 10)、通話を開始する。次に、統制局では地上網からの音声信号を受信すると共に、基地局Ａ及び基地局Ｂへ音声信号を送出する(第3図 11、12)。また、基地局Ａは移動局2からの音声信号を統制局へ送出するとともに、話中信号を送出する(第3図 13)。その後、移動体1が基地局Ａゾーンから基地局Ｂゾーンへ移動すると同時に、移動局2では音声チャネル5において地上電話網からの音声信号を受信できるので、音声信号が無音となることが殆どなく、音声信号を受信できる(第3図 14)。また、基地局Ｂは移動局2からの音声信号を受信すると同時に統制局へ話中信号を送出するので、統制局では移動体1が基地局Ｂへ移動したことを認識する(第3図 15)。 FIG. 3 is a sequence diagram for realizing the present invention when a mobile unit in a call moves between base stations within the jurisdiction of the same control station, and details will be described with reference to FIG.
First, when the control station accepts a call between the mobile 1 and the terrestrial telephone network (FIG. 3), the control channel 4 is used to send the total block signal 7 to the base station A and the base station B to the total block signal 8. Is sent out. At this time, a line from the control station to the base station B is connected, and a voice signal to be sent to the base station A is prepared to be sent to the base station B (FIG. 3). Thereafter, the mobile station 2 and the control station in the moving body transmit / receive control information before the call (FIG. 3) and start the call. Next, the control station receives a voice signal from the ground network and sends a voice signal to the base station A and the base station B (FIGS. 3 and 11). In addition, the base station A sends the voice signal from the mobile station 2 to the control station and sends a busy signal (FIG. 3). Thereafter, since the mobile unit 1 moves from the base station A zone to the base station B zone, the mobile station 2 can receive a voice signal from the terrestrial telephone network on the voice channel 5, so that the voice signal is hardly silenced. Audio signals can be received (Fig. 3 14). In addition, since the base station B receives the voice signal from the mobile station 2 and simultaneously transmits a busy signal to the control station, the control station recognizes that the mobile 1 has moved to the base station B (FIG. 3 FIG. 15). ).

第4図は、従来方法において、地上電話網と通話中の移動体が異なる統制局管轄の基地局間を移動した際の音声通信継続手順を示すシーケンスであり、詳細に説明する。
まず、統制局Ａは移動体1と地上電話網間の呼を受付けると(第4図 6)、制御チャネル4を使用して基地局Ａへ全閉塞信号7を、統制局Ｂへ閉塞指示信号(全閉塞)8を送出する。閉塞指示信号8を受信した統制局Ｂは基地局Ｂに対して音声チャネル5を使用不可とするため、全閉塞信号9を送信する。その後、統制局と移動局2の間の通話前制御を基地局Ａを介して行い、通話状態へ遷移する(第4図 10)。通話状態へ遷移すると同時に、統制局Ａは地上電話網からの音声信号11を基地局Ａへ送出し、基地局Ａは移動局2から音声信号及び話中信号を統制局Ａへ送出する。次に、移動体1が統制局Ｂ管轄の基地局Ｂゾーンへ移動すると、統制局Ｂは基地局Ｂから音声チャネル5において音声信号を受信するので、話中信号13を統制局Ｂへ送出する。話中信号を受信した統制局Ｂは統制局間の音声追跡を行うため、統制局Ａへ追跡回線を用いて追跡指示信号14を送出する。統制局Ａでは追跡指示信号14を受信すると、移動体1が統制局Ｂ管轄ゾーンへ移動したと見なし、統制局Ｂと音声通話をするため、追跡回線を接続する(第4図 16)とともに追跡確認信号17を統制局Ｂへ送出する。統制局Ｂでは追跡確認信号17を受信すると、統制局Ａとの音声回線の準備ができたと判断し、基地局Ｂからの音声信号19を統制局Ａへ送出する。以上により音声通話を継続している。しかし本シーケンスにおいて、移動体1内の電話機を使用する通話では、統制局Ｂが基地局Ｂから話中信号を受信し、統制局Ａへ追跡指示し、統制局間の回線が接続され、統制局Ａからの音声信号18を受信するまでは無音として受聴される。 FIG. 4 is a sequence showing a voice communication continuation procedure when a mobile unit in communication with the ground telephone network moves between base stations under control of different control stations in the conventional method, and will be described in detail.
First, when the control station A accepts a call between the mobile 1 and the terrestrial telephone network (FIG. 4), the control channel 4 is used to send the total block signal 7 to the base station A and the control station B to the block instruction signal. (Total blockage) 8 is sent out. The control station B that has received the block instruction signal 8 transmits a full block signal 9 to the base station B in order to disable the voice channel 5. Thereafter, pre-call control between the control station and the mobile station 2 is performed via the base station A, and the call state is changed (FIG. 4). Simultaneously with the transition to the call state, the control station A sends the voice signal 11 from the terrestrial telephone network to the base station A, and the base station A sends the voice signal and the busy signal from the mobile station 2 to the control station A. Next, when the mobile unit 1 moves to the base station B zone under the control of the control station B, the control station B receives the voice signal from the base station B on the voice channel 5, and therefore transmits the busy signal 13 to the control station B. . The control station B that has received the busy signal transmits a tracking instruction signal 14 to the control station A using a tracking line in order to perform voice tracking between the control stations. When the control station A receives the tracking instruction signal 14, the mobile station 1 is considered to have moved to the control station B jurisdiction zone, and in order to make a voice call with the control station B, a tracking line is connected (FIG. 4) and tracking is performed. A confirmation signal 17 is sent to the control station B. Upon receiving the tracking confirmation signal 17, the control station B determines that the voice line with the control station A is ready, and sends the voice signal 19 from the base station B to the control station A. The voice call is continued as described above. However, in this sequence, in a call using the telephone in the mobile 1, the control station B receives the busy signal from the base station B, instructs the control station A to track, and the line between the control stations is connected. Until the audio signal 18 from the station A is received, it is heard as silence.

第5図は地上電話網と通話中の移動体が異なる統制局管轄の基地局間を移動した際、本発明を適用した手順を示すシーケンスであり、詳細に説明する。
まず、統制局Ａは移動体1と地上電話網間の呼を受付けると(第5図 6)、制御チャネル4を使用して基地局Ａへ全閉塞信号7を、統制局Ｂへ閉塞指示信号(全閉塞)8を送出し、統制局Ｂへの追跡回線を接続し、音声チャネル5を用いて統制局Ｂへ音声信号を送出できる準備をする(第5図 10)。次に、閉塞指示信号8を受信した統制局Ｂは、基地局Ｂへ全閉塞信号9を送信すると共に、基地局Ｂへの回線を接続し、音声信号を流せるように準備する(第5図 11)。その後、閉塞指示信号8を送出した統制局Ａは基地局Ａを通じて移動局2と通話前の制御を行い(第5図 10)、通話状態へ遷移する。通話状態へ遷移すると、統制局Ａは基地局Ａへ音声信号11を送出すると共に、既に接続してある統制局Ｂへの追跡回線へ音声信号13を流す。統制局Ａから音声信号13を受信した統制局Ｂは基地局Ｂへ向けて音声信号13を流す。また、移動局2からの音声信号14を中継する基地局Ａでは、話中信号14を統制局Ａへ送出し、移動体1と地上電話網は通話する。その後、移動体1が統制局Ａ管轄の基地局Ａゾーンから統制局Ｂ管轄の基地局Ｂゾーンへ移行する(第5図 3)と、基地局Ｂでは移動局2からの音声信号を受信する。 FIG. 5 is a sequence showing a procedure to which the present invention is applied when a mobile object in communication with the ground telephone network moves between base stations under the control of different control stations, and will be described in detail.
First, when the control station A accepts a call between the mobile 1 and the terrestrial telephone network (FIG. 5), the control channel 4 is used to send the total block signal 7 to the base station A and the control station B to the block instruction signal. (Total blockage) 8 is sent, a tracking line to the control station B is connected, and preparations are made for sending an audio signal to the control station B using the audio channel 5 (FIG. 5). Next, the control station B that has received the block instruction signal 8 transmits a full block signal 9 to the base station B, and connects the line to the base station B so as to be able to play an audio signal (FIG. 5). 11). Thereafter, the control station A that has transmitted the block instruction signal 8 performs control before the call with the mobile station 2 through the base station A (FIG. 5), and transitions to a call state. When a transition is made to the call state, the control station A sends an audio signal 11 to the base station A and sends an audio signal 13 to the tracking line to the control station B that is already connected. Upon receiving the audio signal 13 from the control station A, the control station B sends the audio signal 13 toward the base station B. In addition, in the base station A that relays the voice signal 14 from the mobile station 2, the busy signal 14 is sent to the control station A, and the mobile unit 1 and the terrestrial telephone network communicate. Thereafter, when the mobile unit 1 moves from the base station A zone under the control of the control station A to the base station B zone under the control of the control station B (FIG. 5), the base station B receives the audio signal from the mobile station 2. .

音声信号15を受信した基地局Ｂは音声信号と共に話中信号を統制局Ｂへ送出する。その後、音声信号15を受信した統制局Ｂは音声信号を統制局Ａへ中継し(第5図 16)、移動体1と地上電話網との間の通話を継続する。   The base station B that has received the voice signal 15 sends a busy signal to the control station B together with the voice signal. Thereafter, the control station B that has received the voice signal 15 relays the voice signal to the control station A (FIG. 5), and continues the call between the mobile unit 1 and the terrestrial telephone network.

本発明の一実施例を示す移動体通信システムのブロック図である。1 is a block diagram of a mobile communication system showing an embodiment of the present invention. 従来方法において、通話中の移動体が同一統制局管轄内基地局間を移動する際の音声通話の継続方法を示すシーケンス図である。In the conventional method, it is a sequence diagram which shows the continuation method of a voice call when the mobile body in a call moves between base stations in the same control station jurisdiction. 本発明において通話中の移動体が同一統制局管轄内基地局間を移動する際の音声通話の継続方法を示すシーケンス図である。It is a sequence diagram which shows the continuation method of a voice call when the mobile body in a call moves between base stations in the same control station jurisdiction in the present invention. 従来方法において、通話中の移動体が異なる統制局管轄の基地局間を移動する際の音声通話継続手法を示すシーケンス図である。In the conventional method, it is a sequence diagram which shows the voice call continuation method at the time of moving between the base stations of the control station jurisdiction from which the mobile body in a call differs. 本発明において、通話中の移動体が異なる統制局管轄の基地局間を移動する際の音声通話継続手法を示すシーケンス図である。In this invention, it is a sequence diagram which shows the voice call continuation method at the time of moving between the base stations of the control station jurisdiction from which the mobile body in a call differs.

符号の説明Explanation of symbols

1・・・移動体、11・・・移動局、111・・・プロセッサ、112・・・メモリ、12・・・業務電話機、13・・・公衆電話機、2・・・統制局電話交換機、21・・・プロセッサ、22・・・メモリ、3・・・伝送路、4・・・基地局、5・・・鉄道会社電話網、6・・・公衆電話網、7・・・鉄道会社業務電話機、8・・・一般電話機、9・・・追跡回線。 DESCRIPTION OF SYMBOLS 1 ... Mobile body, 11 ... Mobile station, 111 ... Processor, 112 ... Memory, 12 ... Business telephone, 13 ... Public telephone, 2 ... Control station telephone switch, 21 ... Processor, 22 ... Memory, 3 ... Transmission path, 4 ... Base station, 5 ... Railway company telephone network, 6 ... Public telephone network, 7 ... Railway company telephone , 8 ... General telephone, 9 ... Tracking line.

Claims (2)

長距離を線的に高速移動する移動体と固定通信網との間で音声通信を行う移動通信方法であって、該移動体の進行方向のエリアを複数のゾーンに分割し、移動体の存在するゾーンより進行方向の複数ゾーンの音声チャネルと、反対方向の１ゾーンの音声チャネルとを閉塞しておき、さらに前方進行方向の１ゾーンに移動体が存在するゾーンと同様の音声を前もって流しておくことを特徴とする移動体通信方法。   A mobile communication method for performing voice communication between a mobile object moving linearly at high speed over a long distance and a fixed communication network, and dividing the area in the traveling direction of the mobile object into a plurality of zones, The voice channels of the multiple zones in the traveling direction from the zone to be moved and the voice channels of the one zone in the opposite direction are blocked, and the same voice as the zone in which the moving object is present in the one zone in the forward traveling direction is further flowed in advance. A mobile communication method characterized by comprising: 長距離を線的に高速移動する移動体と、該移動体を現在収容している基地局と、前記基地局を含む移動体通信網と公衆電話網との接続、交換を行なうとともに、移動体通信網の基地局を統括する統制局電話交換機とを有する通信システムであって、
前記統制局電話交換機は、前記移動体の進行方向のエリアを基地局がカバーするエリア単位に複数のゾーンに分割し、移動体の存在するゾーンより進行方向の複数ゾーンの音声チャネルと、反対方向の１ゾーンの音声チャネルとを閉塞しておき、さらに前方進行方向の１ゾーンに移動体が存在するゾーンと同様の音声を前もって流しておくよう制御することを特徴とする通信システム。 A mobile that linearly moves at high speed over a long distance, a base station that currently accommodates the mobile, and a mobile communication network including the base station and a public telephone network are connected and exchanged, and the mobile A communication system having a control station telephone exchange that supervises a base station of a communication network,
The control station telephone switch divides an area in the traveling direction of the mobile unit into a plurality of zones in an area unit covered by a base station, and a voice channel in a plurality of zones in the traveling direction from the zone in which the mobile unit exists, and in the opposite direction The communication system is characterized in that the control is performed such that the same voice as that of the zone in which the moving body is present in one zone in the forward traveling direction is flown in advance.
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WO2014141364A1 (en) 2013-03-11 2014-09-18 三菱電機株式会社 Mobile radio communication control device and mobile radio communication system
JPWO2021117151A1 (en) * 2019-12-11 2021-06-17

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Publication number Priority date Publication date Assignee Title
JP2010130387A (en) * 2008-11-28 2010-06-10 Hitachi Ltd Mobile communication method and system
WO2014141364A1 (en) 2013-03-11 2014-09-18 三菱電機株式会社 Mobile radio communication control device and mobile radio communication system
US9716797B2 (en) 2013-03-11 2017-07-25 Mitsubishi Electric Corporation Mobile wireless communication control device and mobile wireless communication system
JPWO2021117151A1 (en) * 2019-12-11 2021-06-17
WO2021117151A1 (en) * 2019-12-11 2021-06-17 三菱電機株式会社 Control device, control method, and control program
JP7204008B2 (en) 2019-12-11 2023-01-13 三菱電機株式会社 Control device, control method, and control program

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