【０００１】[0001]
【発明の属する技術分野】本発明は、基地局と単一又は
複数の中継局を介して、移動可能の単一又は複数の端局
と無線通信する無線中継システム及び無線中継方法に関
する。通信網の障害による緊急無線通信網を構築する場
合や、災害発生時に、指揮所を基地局として、災害現場
の無線装置を携帯する救助隊員との間で無線連絡する場
合等に於いて、無線送信電力に制約があることから、複
数の中継局を介して無線通信網を構築することになる。
この無線通信網を簡単に構築することが要望されてい
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless relay system and a wireless relay method for wirelessly communicating with a mobile terminal or a plurality of terminal stations via a base station and a single or a plurality of relay stations. When establishing an emergency wireless communication network due to a communication network failure, or in the event of a disaster, using the command post as a base station for wireless communication with rescue workers carrying wireless devices at the disaster site, etc. Since the transmission power is limited, a wireless communication network is constructed via a plurality of relay stations.
There is a demand for easily constructing this wireless communication network.
【０００２】[0002]
【従来の技術】基地局と複数の中継局を介して端局との
間で無線中継システムを構築する場合、例えば、災害発
生時に、指揮所に基地局を設置し、災害現場で作業する
救助隊員が携帯する端局と基地局との間に中継局を配置
し、基地局からの通信エリアを拡大することが考えられ
ている。或いは、臨時に広域通信を行う場合に、基地局
と複数の中継局と端局とを設け、基地局と端局との間に
無線中継経路を構成することがある。2. Description of the Related Art When a radio relay system is constructed between a base station and a terminal station via a plurality of relay stations, for example, when a disaster occurs, a base station is installed at a command post and rescue work at a disaster site is performed. It has been considered to arrange a relay station between a terminal station carried by a member and a base station to expand a communication area from the base station. Alternatively, when temporary wide area communication is performed, a base station, a plurality of relay stations, and a terminal station may be provided, and a wireless relay path may be configured between the base station and the terminal station.
【０００３】このような無線中継システムに於いて、基
地局と端局との間の複数の中継局について、 ．予め中継局間による中継経路を設定する。 ．基地局と端局との間の通信データと共に、中継経路
の中継局を指定するデータを付加する。 ．基地局と複数の中継局と端局とについて、相関図等
を作成して通信経路を決定する。 等のシステムが提案されている。[0003] In such a wireless relay system, a plurality of relay stations between a base station and a terminal station include: A relay route between relay stations is set in advance. . Along with communication data between the base station and the terminal station, data specifying a relay station on a relay path is added. . For a base station, a plurality of relay stations, and a terminal station, a correlation diagram and the like are created to determine a communication path. And other systems have been proposed.
【０００４】例えば、無線送受信機の間に複数の中継機
を配置し、その配置関係により最短経路となる中継経路
データを、無線送受信機及び中継機に設定し、中継機
は、その中継経路データを参照して、中継送受信するシ
ステムが知られている（例えば、特開平９−２１４４１
２号公報参照）。For example, a plurality of repeaters are arranged between wireless transceivers, and relay route data which is the shortest route is set in the wireless transceiver and the repeater according to the arrangement relationship. With reference to Japanese Patent Application Laid-Open No. 9-21441, there is known a system for relay transmission and reception.
No. 2).
【０００５】[0005]
【発明が解決しようとする課題】端局が移動するシステ
ムや、更に、中継局の移動や増設等により、基地局から
の通信エリアの増減を可能とするシステムに於いては、
中継経路が変更となるから、前述ののように、予め中
継経路を設定するシステムを適用することができない。
又前述ののように、中継経路を指示するデータを付加
すると、データ伝送量が多くなる問題と、中継局の故障
や移動等には対処することができない問題がある。In a system in which a terminal station moves and a system in which a communication area from a base station can be increased or decreased by moving or adding a relay station,
Since the relay route is changed, a system for setting the relay route in advance cannot be applied as described above.
As described above, when data indicating a relay route is added, there is a problem that the amount of data transmission increases and a problem that a failure or movement of the relay station cannot be dealt with.
【０００６】又前述ののように、相関図作成を行う場
合、通信エリアが大きくなるに伴って相関図作成時間が
長くなる問題があり、中継局の故障や移動等に於いて
は、再度、相関図作成の為の相互の通信を必要とする問
題がある。又前述の最短経路の中継路データを中継機に
設定する場合、中継機の故障や移動には、あらためて中
継路データを作成して設定する必要があり、端局が移動
可能の場合に簡単に対処できない問題がある。本発明
は、中継経路を自動的に設定し、無線通信網の構築を容
易に行うことを目的とする。As described above, when a correlation chart is created, there is a problem that the time required to create the correlation chart increases as the communication area becomes larger. There is a problem that requires mutual communication for creating a correlation diagram. In addition, when setting the relay route data of the shortest route to the relay device, it is necessary to newly create and set the relay route data for the failure or movement of the relay device. There is a problem that cannot be addressed. An object of the present invention is to automatically set a relay route and easily construct a wireless communication network.
【０００７】[0007]
【課題を解決するための手段】本発明の無線中継システ
ムは、（１）相互に無線通信する基地局１と複数の中継
局２−１〜２−５と単一又は複数の端局３とを含む無線
中継システムに於いて、基地局１の通信エリア内に存在
する中継局を一次局とし、この一次局の通信エリア内に
存在する中継局を二次局とし、順次上位局の通信エリア
内に存在する中継局を下位局とし、基地局１と、端局３
で受信可能の次数の最低位局を含む通信経路を設定する
ものである。それによって、最短距離の中継経路を設定
することができる。SUMMARY OF THE INVENTION A radio relay system according to the present invention comprises: (1) a base station 1, a plurality of relay stations 2-1 to 2-5, and a single or a plurality of terminal stations 3 for wireless communication with each other; In the wireless relay system including the relay station, the relay station existing in the communication area of the base station 1 is defined as the primary station, the relay station existing in the communication area of the primary station is defined as the secondary station, and the communication area of the upper station is sequentially determined. A relay station existing within the base station is defined as a lower station, and a base station 1 and a terminal station 3
Is to set a communication path including the lowest station of the receivable order. Thereby, the shortest distance relay route can be set.
【０００８】又（２）基地局１と中継局２−１〜２−５
と端局３とは、自局に対する上位局と下位局とを含む単
一又は複数のアドレスを通信経路として記憶する記憶部
１５を備えることができる。(2) Base station 1 and relay stations 2-1 to 2-5
And the terminal station 3 can include a storage unit 15 that stores a single or a plurality of addresses including an upper station and a lower station for the own station as a communication path.
【０００９】又（３）基地局１と中継局２−１〜２−５
とは、自局に対する下位局に対して定期通信により状態
情報を収集する構成を備えることができる。(3) Base station 1 and relay stations 2-1 to 2-5
Means that status information can be collected by periodic communication with the lower station relative to the own station.
【００１０】又（４）本発明の無線中継方法は、基地局
１と複数の中継局２−１〜２−５を介して端局３との間
で無線通信する無線中継方法であって、基地局１から回
線接続要求信号を送信し、この回線接続要求信号を受信
して回線要求応答信号を送信した中継局を一次局とし、
この一次局から回線接続要求信号を受信して回線接続要
求応答信号を送信した中継局を二次局として、順次下位
局を設定し、基地局１と、端局３との間に、中継局の上
位局から下位局の順に中継経路を設定する過程を含むも
のである。(4) The wireless relay method of the present invention is a wireless relay method for performing wireless communication between the base station 1 and the terminal station 3 via the plurality of relay stations 2-1 to 2-5, A relay station that transmits a line connection request signal from the base station 1 and receives the line connection request signal and transmits a line request response signal is defined as a primary station;
With the relay station receiving the line connection request signal from the primary station and transmitting the line connection request response signal as a secondary station, lower stations are sequentially set, and a relay station is set between the base station 1 and the terminal station 3. And the step of setting a relay route in the order from the upper station to the lower station.
【００１１】又（５）無線通信する伝送フレームに、接
続局フラグを設けて、中継局の一次局，二次局等の次数
を設定し、この接続局フラグの受信識別により、中継経
路の中継局が上位局か下位局かを判定する過程を含むこ
とができる。(5) A connection station flag is provided in a transmission frame for wireless communication, the order of the primary station, the secondary station, etc. of the relay station is set, and the relay of the relay path is determined by the reception identification of the connection station flag. The method may include determining whether the station is an upper station or a lower station.
【００１２】又（６）基地局１と中継局２−１〜２−５
とは、自局に対する下位局に対して定期通信により状態
情報を収集し、状態変更に対応して中継経路の変更を行
う過程を含むことができる。(6) Base station 1 and relay stations 2-1 to 2-5
The term may include a step of collecting status information for a lower station with respect to its own station through periodic communication, and changing the relay route in response to the status change.
【００１３】[0013]
【発明の実施の形態】図１は本発明の実施の形態の無線
中継システムの説明図であり、１は基地局、２−１〜２
−５は中継局、３は端局を示す。この場合、基地局１の
通信エリアＡ内に、中継局２−１，２−４が位置し、中
継局２−１の通信エリアＢ−１内に、基地局１と中継局
２−２が位置し、中継局２−２の通信エリアＢ−２内
に、中継局２−１，２−３，２−５が位置し、中継局２
−３の通信エリアＢ−３内に、中継局２−２が位置し、
中継局２−４の通信エリアＢ−４内に、基地局１と中継
局２−５とが位置し、中継局２−５の通信エリアＢ−５
内に、中継局２−２，２−４が位置し、移動可能の端局
３が、中継局２−２，２−３，２−５の通信エリアＢ−
２，Ｂ−３，Ｂ−５内に位置している場合を示す。FIG. 1 is an explanatory diagram of a wireless relay system according to an embodiment of the present invention, wherein 1 is a base station, 2-1 to 2
-5 indicates a relay station, and 3 indicates a terminal station. In this case, the relay stations 2-1 and 2-4 are located in the communication area A of the base station 1, and the base station 1 and the relay station 2-2 are located in the communication area B-1 of the relay station 2-1. The relay stations 2-1 to -3 are located within the communication area B-2 of the relay station 2-2.
The relay station 2-2 is located in the communication area B-3 of -3,
The base station 1 and the relay station 2-5 are located within the communication area B-4 of the relay station 2-4, and the communication area B-5 of the relay station 2-5 is located.
The relay stations 2-2 and 2-4 are located therein, and the movable terminal station 3 is located in the communication area B- of the relay stations 2-2, 2-3 and 2-5.
2, B-3 and B-5.
【００１４】この無線中継システムに於ける各中継局２
−１〜２−５は移動可能の構成とすることができるもの
で、端局３を基地局１から更に遠く離れた位置まで移動
可能とする場合は、更に多くの中継局を配置することが
できる。例えば、基地局１を災害発生時の指揮所とし、
端局３を救助隊員等が携帯し、それらの間に中継局２−
１〜２−５を順次配置する。このような場合、基地局１
は殆ど固定で、自動車搭載電池等を電源として動作可能
の場合が一般的となり、場合によっては、基地局１も移
動することがある。又中継局２−１〜２−５及び端局３
は電池電源で動作する構成とし、例えば、単一周波数で
相互に送受信可能の構成とする。Each relay station 2 in this wireless relay system
-1 to 2-5 can be configured to be movable. If the terminal station 3 can be moved to a position farther away from the base station 1, more relay stations can be arranged. it can. For example, the base station 1 is used as a command post in the event of a disaster,
A rescue worker carries the terminal 3 with a relay station 2 between them.
1 to 2-5 are sequentially arranged. In such a case, the base station 1
Is generally fixed and can be operated using a vehicle-mounted battery or the like as a power source. In some cases, the base station 1 may also move. Also, the relay stations 2-1 to 2-5 and the terminal station 3
Are configured to operate on a battery power supply, for example, a configuration capable of mutually transmitting and receiving at a single frequency.
【００１５】図２は本発明の実施の形態の無線装置の説
明図であり、図１に於ける基地局１，中継局２−１〜２
−５及び端局３の要部の構成を示し、１１はアンテナ、
１２は無線送受信部、１３は送受信制御部、１４はプロ
セッサ等による制御処理部、１５は半導体集積回路メモ
リ等による記憶部である。又必要に応じて表示部や送受
話器を設けることもできる。FIG. 2 is an explanatory diagram of the radio equipment according to the embodiment of the present invention. The base station 1 and the relay stations 2-1 and 2 shown in FIG.
-5 and the configuration of the main part of the terminal station 3 are shown, 11 is an antenna,
Reference numeral 12 is a wireless transmission / reception unit, 13 is a transmission / reception control unit, 14 is a control processing unit such as a processor, and 15 is a storage unit such as a semiconductor integrated circuit memory. Also, a display unit and a handset can be provided as needed.
【００１６】又下方に示す無線送受信部１２を介して送
受信される伝送フレームのフォーマットは、送信元アド
レス、送信先アドレス、接続局フラグ、始点アドレス、
終点アドレス及び通信データを含むものである。この伝
送フレームは、通信データが生じた場合、制御処理部１
４からの指示に従って送受信制御部１３に於いて形成
し、無線送受信部１２から送信するものである。The format of a transmission frame transmitted and received via the radio transmission / reception unit 12 shown below includes a source address, a destination address, a connection station flag, a start point address,
It includes an end point address and communication data. This transmission frame is transmitted to the control processing unit 1 when communication data is generated.
4 is formed in the transmission / reception control unit 13 in accordance with the instruction from 4, and transmitted from the wireless transmission / reception unit 12.
【００１７】又通信データは、基地局１から端局３への
メッセージ或いは端局３から基地局１へのメッセージ或
いは中継局間の正常性確認のメッセージ等が含まれる。The communication data includes a message from the base station 1 to the terminal station 3, a message from the terminal station 3 to the base station 1, a message for confirming the normality between the relay stations, and the like.
【００１８】又基地局１と中継局２−１〜２−５及び端
局３は、予め局番号が付与されており、これをアドレス
として用いるものである。又送信元アドレスは、隣接す
る局間の送信元のアドレスを示し、送信先アドレスは、
隣接する局間の送信先のアドレスを示す。又接続局フラ
グは、基地局１を０次局とした場合に、中継経路に沿っ
た中継局が何次局になるかを示すフラグである。又始点
アドレスは、メッセージを最初に送出した局のアドレス
を示し、終点アドレスは、メッセージを最終的に受信す
る局のアドレスを示す。The base station 1, the relay stations 2-1 to 2-5, and the terminal station 3 are assigned station numbers in advance, and use these as addresses. The source address indicates a source address between adjacent stations, and the destination address is
Indicates the destination address between adjacent stations. The connection station flag is a flag indicating the order of the relay station along the relay path when the base station 1 is the 0th-order station. The start address indicates the address of the station that first sent the message, and the end address indicates the address of the station that finally receives the message.
【００１９】前述の局番号は、記憶部１５等に格納され
ており、制御処理部１４は、この局番号と、伝送フレー
ムの送信先アドレスとを比較して自局宛か否かを判定す
る。又記憶部１５に、中継経路設定時の隣接する基地局
１又は上位局と、基地局３又は下位局とのアドレスを格
納する。The above-mentioned station number is stored in the storage unit 15 or the like, and the control processing unit 14 compares this station number with the transmission destination address of the transmission frame to determine whether or not it is addressed to its own station. . The storage unit 15 stores the addresses of the adjacent base station 1 or higher station and the base station 3 or lower station when setting the relay route.
【００２０】図１に示すような不規則な中継局２−１〜
２−５の配置により構成される無線中継システムに於い
て、各局の電源をオンとした状態では、何れも白紙状態
であり、隣接局を認識していない場合が一般的である。
そこで、図３のシーケンスに従って、基地局１から回線
接続要求信号を送信する。この場合の無線中継システム
は、基地局１と端局３との間の中継局を、一次局，二次
局，三次局，・・・とし、それぞれの中継局に何次局で
あるかを自動的に認識させると共に隣接局のアドレスを
設定するものである。The irregular relay stations 2-1 to 2-1 as shown in FIG.
In the wireless relay system constituted by the arrangement of 2-5, when the power of each station is turned on, each of the stations is in a blank state, and the adjacent station is generally not recognized.
Therefore, the base station 1 transmits a line connection request signal according to the sequence of FIG. In this case, the radio relay system sets the relay station between the base station 1 and the terminal station 3 as a primary station, a secondary station, a tertiary station,... The automatic recognition is performed and the address of the adjacent station is set.
【００２１】この回線接続要求信号送信時に、基地局１
に最も近く、基地局１の通信エリアＡ内に配置した中継
局２−１を認識している場合、図２に示す伝送フレーム
のフォーマットに於ける送信元アドレスを基地局１の番
号とし、又送信先アドレスを中継局２−１の番号とす
る。或いは、基地局１から最も近い中継局を認識できな
い場合、送信元アドレスを基地局１の番号とし、送信先
アドレスを同報通信アドレスとする。又接続局フラグは
オフとする。When transmitting the line connection request signal, the base station 1
, And recognizes the relay station 2-1 arranged in the communication area A of the base station 1, the source address in the format of the transmission frame shown in FIG. The destination address is the number of the relay station 2-1. Alternatively, if the nearest relay station cannot be recognized from the base station 1, the source address is set to the number of the base station 1, and the destination address is set to the broadcast address. The connection station flag is turned off.
【００２２】基地局１からの回線接続要求信号を受信し
た中継局は、基地局１の存在を認識し、送信元アドレス
を隣接局アドレスとして記憶する。そして、回線接続応
答信号を基地局１へ送信する。この場合、例えば、基地
局１に隣接する中継局２−１は、基地局１の番号を送信
先アドレスとし、中継局２−１の番号を送信元アドレス
として送信する。そして、無線装置の記憶部１５（図２
参照）に、基地局アドレスを記憶する。The relay station that has received the line connection request signal from the base station 1 recognizes the existence of the base station 1 and stores the source address as an adjacent station address. Then, a line connection response signal is transmitted to base station 1. In this case, for example, the relay station 2-1 adjacent to the base station 1 transmits the number of the base station 1 as a destination address and the number of the relay station 2-1 as a source address. Then, the storage unit 15 of the wireless device (FIG. 2)
) Is stored.
【００２３】又同報アドレスによる回線接続要求信号
を、基地局１の通信エリアＡ内の複数の中継局がそれぞ
れ受信し、それぞれ回線接続応答信号を送信する場合、
同一無線周波数を用いる場合に、キャリアを検出して、
他の中継局の送信と衝突するか否かを送受信制御部１３
（図２参照）に於いて判定し、キャリアを検出しない場
合に、回線接続応答信号を送信し、キャリアを検出した
場合は、所定の時間後に、再度キャリア検出を行う制御
方法によって、回線接続要求信号に対する回線接続応答
信号を送信することができる。When a plurality of relay stations in the communication area A of the base station 1 respectively receive a line connection request signal based on a broadcast address and transmit a line connection response signal,
When using the same radio frequency, detect the carrier,
The transmission / reception control unit 13 determines whether or not it collides with the transmission of another relay station.
(See FIG. 2), when a carrier is not detected, a line connection response signal is transmitted. When a carrier is detected, a line connection request signal is transmitted again after a predetermined time by a control method of performing carrier detection again. A line connection response signal for the signal can be transmitted.
【００２４】基地局１は、接続応答信号を受信して一次
局の存在を認識して記憶部に記憶し、接続応答受信信号
を送信する。一次局（中継局）は、接続応答受信信号を
受信すると、基地局１に認識されたと判定し、一次局フ
ラグをオンとする。即ち、記憶部１５に一次局フラグを
設定する。この場合、一次局は、単一又は複数となるも
のであり、図１に示す配置構成の場合、一次局は、基地
局１の通信エリアＡ内の中継局２−１と中継局２−４の
２局となる。The base station 1 receives the connection response signal, recognizes the presence of the primary station, stores the primary station in the storage unit, and transmits the connection response reception signal. Upon receiving the connection response received signal, the primary station (relay station) determines that the base station 1 has recognized the signal, and turns on the primary station flag. That is, the primary station flag is set in the storage unit 15. In this case, the primary station is a single station or a plurality of stations. In the case of the arrangement shown in FIG. 1, the primary station is a relay station 2-1 and a relay station 2-4 in the communication area A of the base station 1. And two stations.
【００２５】そして、一次局（中継局）は、送信元アド
レスを自局番号とし、送信先アドレスを隣接中継局を認
識できる時はその中継局番号、認識できない時は同報ア
ドレスとし、又接続局フラグの領域に一次局フラグを設
定して送信する。例えば、一次局を中継局２−１とする
と、この中継局２−１から、送信元アドレスを中継局２
−１の番号とし、送信先アドレスを同報アドレスとし、
接続局フラグを一次局フラグとして回線接続要求信号を
送信する。The primary station (relay station) uses the source address as its own station number, the destination address as the relay station number when the adjacent relay station can be recognized, and the broadcast address when it cannot recognize the adjacent relay station. A primary station flag is set in the area of the station flag and transmitted. For example, assuming that the primary station is the relay station 2-1, the relay station 2-1 sends the source address to the relay station 2-1.
-1, the destination address is the broadcast address,
A line connection request signal is transmitted using the connection station flag as the primary station flag.
【００２６】中継局２−１の通信エリアＢ−１内には、
中継局２−２が存在することから、中継局２−２は、回
線接続要求信号を受信し、接続局フラグにより一次局を
認識し、送信元アドレスを中継局２−２の番号とし、送
信先アドレスを中継局２−１の番号として、回線接続応
答信号を送信する。In the communication area B-1 of the relay station 2-1,
Since the relay station 2-2 exists, the relay station 2-2 receives the line connection request signal, recognizes the primary station by the connection station flag, sets the source address to the number of the relay station 2-2, and transmits the signal. A line connection response signal is transmitted using the destination address as the number of the relay station 2-1.
【００２７】中継局２−１は、二次局の存在を認識し、
隣接局アドレスとして中継局２−２の番号を記憶し、接
続応答受信信号を中継局２−２に送信し、且つ基地局１
へ経路情報通知を行う。基地局１は、一次局の中継局２
−１に対する二次局の中継局２−２を含む経路を記憶す
る。又一次局の中継局２−１からの接続応答受信信号を
受信した中継局２−２は、一次局に認識されたことを確
認し、二次局フラグをオンとする。即ち、記憶部１５に
二次局フラグを設定する。なお、一次局に対する二次局
も単一又は複数となる。なお、下位局からの回線接続応
答信号を受信できない場合、下位局が存在しないと判定
する。The relay station 2-1 recognizes the existence of the secondary station,
The number of the relay station 2-2 is stored as an adjacent station address, a connection response reception signal is transmitted to the relay station 2-2, and the base station 1
To the route information. The base station 1 is a relay station 2 of a primary station.
The path including the relay station 2-2 of the secondary station for -1 is stored. Further, the relay station 2-2, which has received the connection response reception signal from the relay station 2-1 of the primary station, confirms that it has been recognized by the primary station, and turns on the secondary station flag. That is, the secondary station flag is set in the storage unit 15. In addition, the number of secondary stations for the primary station is also single or plural. If the line connection response signal from the lower station cannot be received, it is determined that there is no lower station.
【００２８】以下同様にして、二次局に対する三次局が
認識され、基地局１は、一次局，二次局，三次局，・・
・による中継経路を認識することができる。又端局３
は、中継局からの回線接続要求信号を受信することによ
り、前述と同様な応答によって、隣接中継局を認識する
ことができ、又中継局も自局の通信エリア内に端局３が
存在することを認識できることになる。従って、基地局
１は、端局３までの中継経路を認識し、中継局の次数に
従って、例えば、基地局１→中継局２−１→中継局２−
２→端局３の通信の経路を設定することができる。In the same manner, the tertiary station for the secondary station is recognized, and the base station 1 recognizes the primary station, the secondary station, the tertiary station,.
・ The relay route can be recognized. Terminal 3
By receiving the line connection request signal from the relay station, the terminal station 3 can recognize the adjacent relay station by the same response as described above, and the relay station also has the terminal station 3 in its own communication area. You will be able to recognize that. Accordingly, the base station 1 recognizes the relay route to the terminal station 3 and, for example, according to the order of the relay station, for example, base station 1 → relay station 2-1 → relay station 2-
2 → The communication route of the terminal station 3 can be set.
【００２９】又端局３の移動或いは中継局の移動，増
設，撤去，故障等により、中継経路の変更が必要とな
る。その為に、定期通信を行うものである。即ち、基地
局１に於いて一次局の状態情報を収集し、又一次局に於
いて二次局の状態情報を収集し、二次局に於いて三次局
の状態を収集するように、順次下位局の状態情報を収集
する。そして、無応答や故障を示す状態情報の場合に、
中継経路の変更を行う。Further, the movement of the terminal station 3 or the movement, addition, removal, or failure of the relay station requires a change in the relay path. For this purpose, regular communication is performed. That is, the state information of the primary station is collected in the base station 1, the state information of the secondary station is collected in the primary station, and the state of the tertiary station is collected in the secondary station. Collect status information of lower stations. And in the case of status information indicating no response or failure,
Change the relay route.
【００３０】例えば、基地局１→中継局２−４→中継局
２−５→端局３の経路の場合に、中継局２−４の撤去或
いは障害発生となると、中継局２−４からの定期通信も
受信できなくなり、この時、中継局２−５は、中継局２
−２の通信エリアＢ−２内でもあるから、二次局として
の中継局２−２の定期通信を受信した時、中継局２−２
に、三次局として認識させることができる。For example, when the relay station 2-4 is removed or a fault occurs in the route of the base station 1, the relay station 2-4, the relay station 2-5, and the terminal station 3, the relay station 2-4 Periodic communication cannot be received, and at this time, the relay station 2-5 becomes the relay station 2
-2 in the communication area B-2, the relay station 2-2 receives the periodic communication of the relay station 2-2 as the secondary station.
Then, it can be recognized as a tertiary station.
【００３１】従って、基地局１→中継局２−４→中継局
２−５→端局３の経路は、基地局１→中継局２−１→中
継局２−２→中継局２−５→端局３の経路に変更し、基
地局１と端局３との間の通信経路を確保することができ
る。Therefore, the route of the base station 1 → the relay station 2-4 → the relay station 2-5 → the terminal station 3 is as follows: the base station 1 → the relay station 2-1 → the relay station 2-2 → the relay station 2-5 → By changing to the path of the terminal station 3, a communication path between the base station 1 and the terminal station 3 can be secured.
【００３２】又端局３が移動し、且つその端局３の位置
に中継局を増設した場合、二次局の中継局２−２，２−
５及び三次局の中継局２−３のそれぞれの通信エリア内
であるが、増設中継局は、二次局の中継局２−２又は中
継局２−５の下位局とすれば良いことになり、従って、
定期通信による接続局フラグを受信判定して、二次局の
中継局２−２又は中継局２−５のアドレスを用いて回線
接続要求信号を送出する。それによって、中継局２−２
又は中継局２−５の下位局として認識させることができ
る。When the terminal station 3 moves and a relay station is added at the position of the terminal station 3, the relay stations 2-2 and 2-
5 and the tertiary station relay station 2-3, but the additional relay station may be a lower station of the secondary station relay station 2-2 or the relay station 2-5. And therefore,
It determines the reception of the connection station flag by the periodic communication, and sends out a line connection request signal using the address of the relay station 2-2 or the relay station 2-5 as the secondary station. Thereby, the relay station 2-2
Alternatively, it can be recognized as a lower station of the relay station 2-5.
【００３３】又端局３が他の中継局の通信エリア内に移
動した場合、その中継局の定期通信を受信し、接続局フ
ラグを認識し、次数の小さい中継局を選定して、その中
継局に回線接続要求を送出することにより、その中継局
を介して通信経路を設定することができる。それによっ
て、最短経路で基地局１との間の中継経路を設定するこ
とができる。例えば、端局３が中継局２−１，２−２の
通信エリアＢ−１，Ｂ−２内に移動した場合、一次局と
二次局との定期通信を受信可能となるから、一次局の中
継局２−１に回線接続要求を送出することになる。それ
よって、基地局１→中継局２−１→端局３の通信経路が
設定される。When the terminal station 3 moves into the communication area of another relay station, the terminal station receives the periodic communication of the relay station, recognizes the connection station flag, selects a relay station having a small degree, and selects the relay station. By transmitting a line connection request to a station, a communication path can be set via the relay station. As a result, a relay route to the base station 1 can be set with the shortest route. For example, when the terminal station 3 moves into the communication areas B-1 and B-2 of the relay stations 2-1 and 2-2, the regular communication between the primary station and the secondary station can be received. Is transmitted to the relay station 2-1. Thus, a communication route from the base station 1 to the relay station 2-1 to the terminal station 3 is set.
【００３４】又各局は、複数の通信経路に対応した上位
局及び下位局を認識して記憶部１５（図２参照）に記憶
しておくことにより、再送処理を他の通信経路によって
行うことができる。従って、突発的な一部の通信経路の
障害によっても、信頼性の高い無線通信を可能とするこ
とができる。Each station recognizes an upper station and a lower station corresponding to a plurality of communication paths and stores them in the storage unit 15 (see FIG. 2) so that retransmission processing can be performed by another communication path. it can. Therefore, highly reliable wireless communication can be enabled even when a sudden failure of some communication paths occurs.
【００３５】[0035]
【発明の効果】以上説明したように、本発明は、基地局
１と複数の中継局２−１〜２−５と端局３とを含む無線
中継システムであって、基地局１は、回線接続要求信号
に応答できる通信エリア内の中継局を一次局とし、その
一次局の通信エリア内に存在する中継局を二次局とし、
順次下位局を設定して、端局３との間は、次数に従った
中継局を経由した中継経路を設定するものであり、中継
局は自律的な動作によって、基地局１又は上位局と端局
３又は下位局とを識別し、基地局１と端局３との間の最
短の中継経路を設定することができる。As described above, the present invention is a radio relay system including a base station 1, a plurality of relay stations 2-1 to 2-5, and a terminal station 3, wherein the base station 1 A relay station in the communication area that can respond to the connection request signal is defined as a primary station, and a relay station existing in the communication area of the primary station is defined as a secondary station.
The lower stations are sequentially set, and a relay route is set between the base station 1 and the upper station by autonomous operation between the terminal station 3 and the relay path via the relay station according to the order. The terminal station 3 or the lower station can be identified, and the shortest relay path between the base station 1 and the terminal station 3 can be set.
【００３６】又この中継経路の上位局から下位局の状態
情報を定期通信によって収集し、下位局又は上位局の障
害或いは移動時の状態情報の変更に対応して、中継経路
の変更を行うことができる利点がある。従って、各種の
無線システムに於いて、基地局１，中継局２−１〜２−
５及び端局３が移動する場合でも、自動的に中継経路を
構成し、基地局１と、その通信エリアから離れた端局３
との間で確実な無線通信が可能となる利点がある。Also, the status information of the lower station is collected from the upper station of the relay path by periodic communication, and the relay path is changed in response to the failure of the lower station or the upper station or the change of the state information when moving. There are advantages that can be. Therefore, in various wireless systems, the base station 1, the relay stations 2-1 to 2-
Even when the terminal 5 and the terminal station 3 move, a relay route is automatically configured, and the base station 1 and the terminal station 3 that are away from the communication area are automatically configured.
There is an advantage that reliable wireless communication can be performed with the wireless communication device.
【図１】本発明の実施の形態の説明図である。FIG. 1 is an explanatory diagram of an embodiment of the present invention.
【図２】本発明の実施の形態の無線装置の説明図であ
る。FIG. 2 is an explanatory diagram of a wireless device according to an embodiment of the present invention.
【図３】本発明の実施の形態のシーケンス説明図であ
る。FIG. 3 is a sequence explanatory diagram of the embodiment of the present invention.
１ 基地局 ２−１〜２−５ 中継局 ３ 端局 Ａ，Ｂ−１〜Ｂ−５ 通信エリア 1 Base station 2-1 to 2-5 Relay station 3 Terminal station A, B-1 to B-5 Communication area
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11059749AJP2000261361A (en) | 1999-03-08 | 1999-03-08 | Radio relay system and radio relaying method |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11059749AJP2000261361A (en) | 1999-03-08 | 1999-03-08 | Radio relay system and radio relaying method |
| Publication Number | Publication Date |
|---|---|
| JP2000261361Atrue JP2000261361A (en) | 2000-09-22 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11059749APendingJP2000261361A (en) | 1999-03-08 | 1999-03-08 | Radio relay system and radio relaying method |
| Country | Link |
|---|---|
| JP (1) | JP2000261361A (en) |
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