JP2010114741A - Wireless communication system - Google Patents

Wireless communication system Download PDF

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JP2010114741A
JP2010114741A JP2008286643A JP2008286643A JP2010114741A JP 2010114741 A JP2010114741 A JP 2010114741A JP 2008286643 A JP2008286643 A JP 2008286643A JP 2008286643 A JP2008286643 A JP 2008286643A JP 2010114741 A JP2010114741 A JP 2010114741A
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station
relay
dedicated
base station
communication
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祐太 ▲陰▼地
Yuta Kagechi
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Hitachi Kokusai Electric Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To perform transmission/reception by press talk by enabling a relay station itself to participate in a group communication while enabling the relay station to continue relay during group communication relay. <P>SOLUTION: A wireless communication system includes a base station, a plurality of mobile stations and a relay station. The relay station includes: a via-base-station dedicated unit for performing group communication with the base station; a direct communication dedicated unit for performing group communication with a mobile station in an area wherein the base station is outside a communication range; and a dedicated cable for connecting the via-base-station dedicated unit and the direct communication dedicated unit. Each of the via-base-station dedicated unit and the direct communication dedicated unit includes a relay section, respectively for the relay station itself to perform group communication. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、無線通信システムに関し、特にグループ通信に関するものである。   The present invention relates to a wireless communication system, and more particularly to group communication.

従来の無線通信システムは、山岳地帯などの不感地域の少数の無線機が通信するためにはそのエリアに基地局または中継局を設置する必要があり、装置費用及び設置費用が高額であった。 そこで、移動局を利用した簡易的な中継局を設置していた。しかし、従来の簡易的な中継局によるグループ通信中継は、中継のみを行うだけであり、中継局自身がグループ通信に参加することができなかった。
無線通信システムにおいて、中継局と移動局のグループ通信が例えば、特許文献１に開示されている。
特開２００８−０６７１４１号公報 In the conventional wireless communication system, in order for a small number of wireless devices in a blind area such as a mountainous area to communicate, it is necessary to install a base station or a relay station in that area, and the apparatus cost and installation cost are high. Therefore, a simple relay station using a mobile station has been installed. However, the group communication relay by the conventional simple relay station only performs the relay, and the relay station itself cannot participate in the group communication.
In a wireless communication system, group communication between a relay station and a mobile station is disclosed in Patent Document 1, for example.
JP 2008-066711 A

従来の簡易的な中継局によるグループ通信中継は、中継のみを行うだけであり、中継局自身がグループ通信に参加することができなかった。
簡易的な中継局は送受信されたデータを専用ケーブルを介してやり取りを行う中継動作のみであり、グループ通信を中継しながら参加することはできないという欠点があった。
基地局と移動局が通信できない不感地域は、山岳地帯での遭難救助や避難所となる学校などの施設があり、このような場所は救助活動や避難所とやり取りをする拠点になる可能性があり、そこで中継局自身がグループ通信に参加する必要がある。 The conventional group communication relay by the simple relay station only performs the relay, and the relay station itself cannot participate in the group communication.
A simple relay station has only a relay operation of exchanging transmitted / received data via a dedicated cable, and has a disadvantage that it cannot participate while relaying group communication.
Insensitive areas where base stations and mobile stations cannot communicate are facilities such as schools for distress relief and evacuation in mountainous areas, and such places may become a base for rescue activities and exchanges with evacuation centers. There, the relay station itself needs to participate in group communication.

本発明の目的は、グループ通信中継において、中継を継続しながら、中継局自身もグループ通信に参加し、プレストークによる送受信を可能とすることである。   An object of the present invention is to enable relay station itself to participate in group communication and transmit / receive by press talk while continuing relay in group communication relay.

本発明の無線通信システムは、基地局と複数の移動局と中継局を有し、中継局は基地局とグループ通信を行うための基地局経由専用機と、基地局が通信圏外となる地域で移動局とグループ通信を行うための直接通信専用機と、基地局経由専用機と直接通信専用機を接続する専用ケーブルを備え、中継局自身がグループ通信を行うために基地局経由専用機と直接通信専用機にそれぞれ中継部を有する。   The wireless communication system of the present invention has a base station, a plurality of mobile stations, and a relay station. The relay station is a dedicated device via a base station for performing group communication with the base station, and in an area where the base station is outside the communication range. A dedicated direct communication device for group communication with a mobile station and a dedicated cable for connecting the dedicated device via the base station to the direct communication dedicated device, so that the relay station itself can directly communicate with the dedicated device via the base station for group communication. Each dedicated communication machine has a relay unit.

本発明の無線通信システムによれば、簡易中継局が基地局と移動局のグループ通信を中継しながら中継局自身もグループ通信に参加できる。   According to the wireless communication system of the present invention, the relay station itself can participate in the group communication while the simple relay station relays the group communication between the base station and the mobile station.

以下、本発明の一実施例を図１と図２を用いて説明する。図２は本発明の一実施例である無線通信システムを説明するための図である。   An embodiment of the present invention will be described below with reference to FIGS. FIG. 2 is a diagram for explaining a radio communication system according to an embodiment of the present invention.

図２において、基地局無線送受信装置１２は、基地局無線送受信装置１２の通信可能エリアである基地局圏内エリア１８内にある移動局１３〜１４と中継局１７と通信を行う。中継局１７は、基地局圏内エリア１８外である不感地域１９内にある移動局１５〜１６に対して基地局無線送受信装置１２との通信を中継する。   In FIG. 2, the base station radio transmission / reception device 12 communicates with the mobile stations 13 to 14 and the relay station 17 in the base station area 18 that is the communicable area of the base station radio transmission / reception device 12. The relay station 17 relays communication with the base station radio transmission / reception device 12 to the mobile stations 15 to 16 in the dead area 19 outside the base station area 18.

中継局１７を簡易中継局とする場合は、移動局２台を専用ケーブル１１で接続し、１台の移動局を基地局経由専用機５とし、もう１台の移動局を直接通信専用機１０とし、不感地域１９内の移動局１５〜１６は直接通信を使用して基地局圏内エリア１８内の移動局１３〜１４と中継局１７および基地局無線送受信装置１２を介して通信を行う。中継方法は、基地局無線送受信装置１２を経由する移動局１３〜１４からの送受信を基地局経由専用機５が、直接通信を使用する移動局１５〜１６からの送受信を直接通信専用機１０が送受信する。   When the relay station 17 is a simple relay station, two mobile stations are connected by a dedicated cable 11, one mobile station is used as a dedicated machine 5 via a base station, and the other mobile station is used as a direct communication dedicated machine 10. The mobile stations 15 to 16 in the insensitive area 19 communicate with the mobile stations 13 to 14 in the base station area 18 via the relay station 17 and the base station radio transmission / reception apparatus 12 using direct communication. As for the relay method, the dedicated machine 5 via the base station performs transmission / reception from the mobile stations 13 to 14 via the base station radio transmission / reception device 12, and the direct communication dedicated apparatus 10 performs transmission / reception from the mobile stations 15 to 16 using direct communication. Send and receive.

次に本発明の一実施例である中継局１７が基地局と移動局のグループ通信を中継しながら中継局１７自身もグループ通信に参加できる動作の詳細を説明する。
図１は本発明の一実施例である中継局を説明するためのブロック図である。 Next, details of an operation in which the relay station 17 according to an embodiment of the present invention can participate in group communication while relaying the group communication between the base station and the mobile station will be described.
FIG. 1 is a block diagram for explaining a relay station according to an embodiment of the present invention.

図１において、中継局１７は２台の移動局を専用ケーブル１１で接続し、それぞれを基地局経由専用機５と直接通信専用機１０とする。移動局１３が中継局１７に登録されているグループにて発信する。基地局経由専用機５が移動局１３からのグループ呼出によって着信し、それと同時に基地局経由専用機５の制御部３が専用ケーブル１１によるシリアル通信にて基地局経由専用機５の着信したグルーフ番号を直接通信専用機１０の制御部８に伝送し、直接通信専用機１０がそのグループ番号にて発信する。直接通信専用機１０からの発信は移動局１６及び移動局１５にて着信し、呼が確立する。中継局１７は基地局経由専用機５及び直接通信専用機１０のどちらからでも送話ができる。基地局経由専用機５のアンテナ２０は、送信部１と受信部２に接続している。基地局経由専用機５のアンテナ２１は、送信部６と受信部７に接続している。   In FIG. 1, the relay station 17 connects two mobile stations with a dedicated cable 11, and each of them is a dedicated device 5 via a base station and a dedicated direct communication device 10. The mobile station 13 transmits in a group registered in the relay station 17. The base station dedicated machine 5 is received by the group call from the mobile station 13, and at the same time, the control unit 3 of the base station dedicated machine 5 receives the group number of the base station dedicated machine 5 by serial communication using the dedicated cable 11. Is directly transmitted to the control unit 8 of the dedicated communication device 10 and the dedicated communication device 10 transmits the information using the group number. The outgoing call from the direct communication dedicated device 10 is received by the mobile station 16 and the mobile station 15, and the call is established. The relay station 17 can transmit from either the base station dedicated machine 5 or the direct communication dedicated machine 10. The antenna 20 of the base station dedicated machine 5 is connected to the transmitter 1 and the receiver 2. The antenna 21 of the base station dedicated machine 5 is connected to the transmitter 6 and the receiver 7.

移動局１３からの送話は、基地局無線送受信装置１２を経由し基地局経由専用機５の受信部２が受信し、制御部３へ出力する。制御部３は移動局１３からの送話と判断した場合、中継部４へ出力する。基地局経由専用機５の中継部４が専用ケーブル１１のシリアル伝送によって、直接通信専用機１０の中継部９へと伝送し、中継部９から制御部８を通じて不感地域１９内の移動局１６及び移動局１５に送信される。   The transmission from the mobile station 13 is received by the receiving unit 2 of the dedicated base station-routed device 5 via the base station radio transmitting / receiving device 12 and output to the control unit 3. When the control unit 3 determines that the transmission is from the mobile station 13, the control unit 3 outputs the transmission to the relay unit 4. The relay unit 4 of the base station dedicated machine 5 transmits directly to the relay unit 9 of the dedicated communication machine 10 through serial transmission of the dedicated cable 11, and the relay station 9 and the mobile station 16 in the insensitive area 19 through the control unit 8. It is transmitted to the mobile station 15.

中継局１７の動作は、基地局経由専用機５が基地局無線送受信装置１２からの送信信号を受信部２で受信し、受信した受信信号を受信部２が制御部３に出力し、受信信号を制御部３から専用ケーブル１１にてシリアル通信による伝送を行い、直接通信専用機１０の制御部８へ伝送する。制御部８は伝送された信号を送信部６に出力し、送信部６は伝送されてきた信号をアンテナ２１を介して不感地域１９内の移動局１５〜１６へ直接通信にて送信する。不感地域１９内の移動局１５〜１６から送信された送信信号は、直接通信専用機１０のアンテナ２１を介して受信部７で受信し、受信した受信信号を受信部７が制御部８に出力し、受信信号を制御部８から専用ケーブル１１にてシリアル通信による伝送を行い、基地局経由専用機５の制御部３へ伝送する。制御部３は伝送された信号を送信部１に出力し、送信部１は伝送されてきた信号をアンテナ２０を介して基地局無線送受信装置１２に送信する。   The operation of the relay station 17 is as follows. The dedicated base station relay device 5 receives a transmission signal from the base station radio transmission / reception apparatus 12 by the reception unit 2, and the reception unit 2 outputs the received reception signal to the control unit 3. Is transmitted by serial communication from the control unit 3 through the dedicated cable 11 and directly transmitted to the control unit 8 of the dedicated communication device 10. The control unit 8 outputs the transmitted signal to the transmission unit 6, and the transmission unit 6 transmits the transmitted signal to the mobile stations 15 to 16 in the insensitive area 19 through the antenna 21 by direct communication. Transmission signals transmitted from the mobile stations 15 to 16 in the insensitive area 19 are directly received by the reception unit 7 via the antenna 21 of the dedicated communication device 10, and the reception unit 7 outputs the received reception signal to the control unit 8. Then, the received signal is transmitted by serial communication from the control unit 8 through the dedicated cable 11 and transmitted to the control unit 3 of the dedicated machine 5 via the base station. The control unit 3 outputs the transmitted signal to the transmission unit 1, and the transmission unit 1 transmits the transmitted signal to the base station radio transmission / reception apparatus 12 via the antenna 20.

中継局１７は装置内部に中継部４と中継部９を設けることで、中継を継続しながらもグループ通信に参加することが可能となる。中継部４は基地局経由専用機５による移動局１３及び移動局１４からの送受信及び不感地域１９内の移動局１５及び移動局１６の直接通信による送受信を中継する役割を持つ。制御部３では中継動作または中継局自身による送信であるかを判断し、中継動作であれば中継部４へデータを出力し、中継局自身による送信であれば、制御部３が通常のグループ通信の動作を行う。   By providing the relay unit 4 and the relay unit 9 in the apparatus, the relay station 17 can participate in group communication while continuing the relay. The relay unit 4 has a role of relaying transmission / reception from the mobile station 13 and the mobile station 14 by the dedicated base station 5 and transmission / reception by direct communication between the mobile station 15 and the mobile station 16 in the insensitive area 19. The control unit 3 determines whether it is a relay operation or transmission by the relay station itself. If it is a relay operation, it outputs data to the relay unit 4, and if it is transmission by the relay station itself, the control unit 3 performs normal group communication. Perform the operation.

上記で説明したように、本発明の無線通信システムは、簡易中継局が基地局と移動局のグループ通信を中継しながら中継局自身もグループ通信に参加できる。
以上本発明について詳細に説明したが、本発明は、ここに記載された無線通信システムに限定されるものではなく、上記以外の無線通信システムに広く適用することができることは言うまでもない。 As described above, in the wireless communication system of the present invention, the relay station itself can participate in the group communication while the simple relay station relays the group communication between the base station and the mobile station.
Although the present invention has been described in detail above, it is needless to say that the present invention is not limited to the radio communication system described here, and can be widely applied to radio communication systems other than those described above.

本発明の一実施例である中継局を説明するためのブロック図である。It is a block diagram for demonstrating the relay station which is one Example of this invention. 本発明の一実施例である無線通信システムを説明するための図である。It is a figure for demonstrating the radio | wireless communications system which is one Example of this invention.

符号の説明Explanation of symbols

１：送信部、２：受信部、３：制御部、４：中継部、５：基地局経由専用機、６：送信部、７：受信部、８：制御部、９：中継部、１０：直接通信専用機、１１：専用ケーブル、１２：基地局無線送受信装置、１３〜１６：移動局、１７：中継局、１８：基地局圏内エリア、１９：不感地域、２０，２１：アンテナ。   1: transmission unit, 2: reception unit, 3: control unit, 4: relay unit, 5: dedicated machine via base station, 6: transmission unit, 7: reception unit, 8: control unit, 9: relay unit, 10: Direct communication dedicated machine, 11: dedicated cable, 12: base station radio transmitter / receiver, 13-16: mobile station, 17: relay station, 18: area within base station, 19: dead area, 20, 21: antenna.

Claims (1)

基地局と複数の移動局と中継局を有する無線通信システムにおいて、
前記中継局は、前記基地局とグループ通信を行うための基地局経由専用機と、前記基地局が通信圏外となる地域で前記移動局とグループ通信を行うための直接通信専用機と、前記基地局経由専用機と前記直接通信専用機を接続する専用ケーブルを備え、
前記中継局自身がグループ通信を行うために前記基地局経由専用機と前記直接通信専用機にそれぞれ中継部を有することを特徴とする無線通信システム。 In a wireless communication system having a base station, a plurality of mobile stations, and a relay station,
The relay station includes a dedicated base station via base station for performing group communication with the base station, a direct communication dedicated machine for performing group communication with the mobile station in an area where the base station is out of communication range, and the base A dedicated cable that connects the dedicated machine via the station and the dedicated direct communication machine,
A wireless communication system, wherein the relay station itself has a relay unit in each of the dedicated base station via-router and the dedicated direct communication unit in order to perform group communication.
JP2008286643A 2008-11-07 2008-11-07 Wireless communication system Pending JP2010114741A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019062251A (en) * 2017-09-22 2019-04-18 株式会社日立国際電気 Radio communication system, relay device, and radio communication terminal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019062251A (en) * 2017-09-22 2019-04-18 株式会社日立国際電気 Radio communication system, relay device, and radio communication terminal
JP7111451B2 (en) 2017-09-22 2022-08-02 株式会社日立国際電気 Wireless communication system and relay device

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