JPH10209957A - Radio communication system and its method - Google Patents
Radio communication system and its methodInfo
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- JPH10209957A JPH10209957A JP9017876A JP1787697A JPH10209957A JP H10209957 A JPH10209957 A JP H10209957A JP 9017876 A JP9017876 A JP 9017876A JP 1787697 A JP1787697 A JP 1787697A JP H10209957 A JPH10209957 A JP H10209957A
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- relay
- relay station
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば周波数ホッ
ピング方式を用いた無線ＬＡＮにおいて、特に制御局と
端末局の間でのみデータ通信を行うシステムにおいて、
通信可能なエリアを拡大するための無線通信システムお
よび無線通信方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless LAN using, for example, a frequency hopping method, and more particularly to a system for performing data communication only between a control station and a terminal station.
The present invention relates to a wireless communication system and a wireless communication method for expanding a communicable area.
【０００２】[0002]
【従来の技術】一般に、無線ＬＡＮにおいて通信エリア
を拡大するには、送信出力を上げる方法がとられてい
た。また、制御局の制御部に、複数の無線部を有線で接
続し、エリアを拡大する方法がとられていた。2. Description of the Related Art Generally, in order to expand a communication area in a wireless LAN, a method of increasing a transmission output has been adopted. In addition, a method has been used in which a plurality of wireless units are connected to the control unit of the control station by wire to expand the area.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、送信出
力を上げるには、全ての無線装置が高価な送信アンプを
内蔵しなければならず、そのために装置のコストが高く
なるという問題点があった。また、送信出力を上げるこ
とは、無線装置の消費電力も大きくなる。However, in order to increase the transmission output, all wireless devices must incorporate expensive transmission amplifiers, which causes a problem that the cost of the device increases. Increasing the transmission output also increases the power consumption of the wireless device.
【０００４】また、制御部に複数の無線部を有線接続す
る方法は、１台の無線部がカバーできるエリアが、２．
４８４ＧＨｚ帯の無線ＬＡＮの場合、屋内では半径約４
０ｍとなるため、制御部と無線部との間の有線は、数十
メートルの長さが必要となる問題があった。Further, a method of connecting a plurality of wireless units to the control unit by wire is disclosed in the following.
In the case of a 484 GHz wireless LAN, the indoor radius is about 4
Since the distance is 0 m, there is a problem that the cable between the control unit and the wireless unit needs a length of several tens of meters.
【０００５】本発明は、低コストで通信エリアを拡大で
きる無線通信システムおよび無線通信方法を提供するこ
とを目的とする。An object of the present invention is to provide a radio communication system and a radio communication method that can expand a communication area at low cost.
【０００６】[0006]
【課題を解決するための手段】本発明では、制御局と中
継局と端末局とを有する無線通信システムにおいて、前
記制御局と端末局で伝送されるデータは必ず中継局によ
って一度中継を行って伝送することにより、無線装置に
高価な送信アンプを用いる必要なく、また、制御装置と
無線装置の間を長いケーブルによって有線接続を行う必
要なく、通信エリアを拡大できる。According to the present invention, in a wireless communication system having a control station, a relay station, and a terminal station, data transmitted between the control station and the terminal station is always relayed once by the relay station. By transmitting, the communication area can be expanded without using an expensive transmission amplifier for the wireless device and without having to perform a wired connection between the control device and the wireless device with a long cable.
【０００７】具体的には、無線通信で使用するフレーム
に制御局と中継局との間でフレーム同期を確立するため
の制御局・中継局間用フレーム同期チャネルと、制御局
と中継局との間でデータ通信を行う制御局・中継局間用
データチャネルと、中継局と端末局の間でフレーム同期
を確立するための中継局・端末局間用フレーム同期チャ
ネルと、中継局と端末局の間でデータ通信を行う中継局
・端末局間用データチャネルを設け、各中継局は、制御
局・中継局間用フレーム同期チャネルを受信することで
フレーム同期を確立し、各端末局は、中継局・端末局間
用フレーム同期チャネルを受信することでフレーム同期
を確立し、各端末局とのデータ通信は必ず中継局によっ
て中継を行う。[0007] More specifically, a frame synchronization channel between the control station and the relay station for establishing frame synchronization between the control station and the relay station for a frame used in wireless communication, and a communication between the control station and the relay station. A data channel for a control station and a relay station for performing data communication between the relay station and a terminal station; a frame synchronization channel for a relay station and a terminal station for establishing frame synchronization between the relay station and the terminal station; A data channel for relay stations and terminal stations for performing data communication between them is provided, and each relay station establishes frame synchronization by receiving a frame synchronization channel for control stations and relay stations. The frame synchronization is established by receiving the frame synchronization channel between the stations and the terminal stations, and the data communication with each terminal station is always relayed by the relay station.
【０００８】[0008]
【発明の実施の形態および実施例】図１は、本発明の一
実施例で使用する無線通信装置の基本構成を示す説明図
である。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory diagram showing a basic configuration of a wireless communication apparatus used in one embodiment of the present invention.
【０００９】図２は、本実施例における制御局、中継
局、端末局の通信エリアを示す説明図である。FIG. 2 is an explanatory diagram showing communication areas of a control station, a relay station, and a terminal station in this embodiment.
【００１０】図１に示す無線通信装置は、本実施例にお
ける制御局、中継局、端末局で共通する構成であり、ア
ンテナ５により電波を送受信する無線部（ＲＦ）１と、
前記無線部１にフレーム化したデータを渡し、また、前
記無線部１からの受信データにフレーム分解処理を施し
てデータを取り出すチャネルコーデック部（ＣＨＣ）２
と、コンピュータ等の情報機器（図示せず）とデータを
やり取りするためのインターフェース部（ＩＦ）３と、
前記各部を制御する制御部４とを有する。The radio communication apparatus shown in FIG. 1 has a configuration common to a control station, a relay station, and a terminal station in the present embodiment.
A channel codec unit (CHC) 2 that transfers framed data to the radio unit 1 and performs frame disassembly processing on received data from the radio unit 1 to extract data.
An interface unit (IF) 3 for exchanging data with an information device (not shown) such as a computer;
A control unit 4 for controlling each of the units.
【００１１】図２は、本実施例における制御局と中継局
の位置関係の一例を示す説明図である。図２において、
各円は、制御局と中継局の通信圏を示している。FIG. 2 is an explanatory diagram showing an example of the positional relationship between the control station and the relay station in the present embodiment. In FIG.
Each circle indicates a communication area between the control station and the relay station.
【００１２】図３は、本実施例で用いるフレーム構成を
示す説明図である。FIG. 3 is an explanatory diagram showing a frame configuration used in this embodiment.
【００１３】ＣＮＴ１は、制御局・中継局間用のフレー
ム同期チャネル、ＬＣＣＨ１は制御局・中継局間用の論
理制御チャネル、ＤＡＴＡ１は制御局・中継局間用のデ
ータチャネル、ＣＮＴ２は中継局・端末局間用のフレー
ム同期チャネル、ＬＣＣＨ２は中継局・端末局間用の論
理制御チャネル、ＤＡＴＡ２は中継局・端末局間用のデ
ータチャネルを示す。CNT1 is a frame synchronization channel between the control station and the relay station, LCCH1 is a logical control channel between the control station and the relay station, DATA1 is a data channel between the control station and the relay station, and CNT2 is a relay station and the relay station. LCCH2 is a logical control channel for relay stations and terminal stations, and DATA2 is a data channel for relay stations and terminal stations.
【００１４】図４は、本実施例で用いる周波数ホッピン
グパターンの使用例を示す説明図である。FIG. 4 is an explanatory diagram showing an example of use of the frequency hopping pattern used in this embodiment.
【００１５】この図４では、縦軸が周波数、横軸が時間
を示し、Ｔ１、Ｔ２、…が１つのフレーム時間を示して
いる。また、図４に示すように、本実施例では、１フレ
ーム時間を制御局−中継局間通信区間と中継局−端末局
間通信区間に分けている。In FIG. 4, the vertical axis indicates frequency, the horizontal axis indicates time, and T1, T2,... Indicate one frame time. Further, as shown in FIG. 4, in the present embodiment, one frame time is divided into a communication section between the control station and the relay station and a communication section between the relay station and the terminal station.
【００１６】本実施例では、図３に示す無線フレーム
を、図４に示すような周波数ホッピングパターンによっ
て周波数ホッピングを行い、スペクトラム拡散通信を行
う。In this embodiment, the radio frame shown in FIG. 3 is subjected to frequency hopping according to a frequency hopping pattern as shown in FIG. 4 to perform spread spectrum communication.
【００１７】図５は、制御局、中継局、端末局の通信関
係を示す階層図である。FIG. 5 is a hierarchical diagram showing a communication relationship among a control station, a relay station, and a terminal station.
【００１８】同図において、ＣＳは制御局、ＴＰＳは中
継局で、その番号は制御局内の中継局を識別するための
アドレス例を示している。また、ＰＳは端末局で、その
番号は端末局を識別するためのアドレス例を示してい
る。In FIG. 1, CS is a control station, TPS is a relay station, and the numbers indicate examples of addresses for identifying the relay stations in the control station. Also, PS is a terminal station, and the number indicates an example of an address for identifying the terminal station.
【００１９】図６は、本実施例における端末局からの発
呼手順を示す説明図であり、図７は、本実施例における
制御局からの発呼手順を示す説明図である。FIG. 6 is an explanatory diagram showing a calling procedure from a terminal station in the present embodiment, and FIG. 7 is an explanatory diagram showing a calling procedure from a control station in the present embodiment.
【００２０】以下、以上の各図に基づいて、本発明の第
１実施例における動作について説明する。The operation of the first embodiment of the present invention will be described below with reference to the drawings.
【００２１】制御局は、内部のタイマによって定期的に
制御局・中継局間用フレーム同期チャネルを送信し、中
継局・端末局間用フレーム同期チャネルの区間では送受
信を行わない。また、制御局・中継局間用に周波数ホッ
ピングパターンを１つ決めておき、中継局・端末局間用
通信のために中継局ごとに重複しないように周波数ホッ
ピングパターンを割り当てる。The control station periodically transmits a frame synchronization channel between the control station and the relay station using an internal timer, and does not perform transmission / reception in the section of the frame synchronization channel between the relay station and the terminal station. In addition, one frequency hopping pattern is determined for the control station and the relay station, and the frequency hopping pattern is assigned to each relay station for communication between the relay station and the terminal station so as not to overlap.
【００２２】このとき、制御局・中継局間で使用してい
る周波数ホッピングパターンと同じものを中継局・端末
局間通信用に割り当てても問題ない。なぜなら、フレー
ム内を制御局・中継局間用の区間と、中継局・端末局間
用の区間に分けているため、同じ周波数ホッピングパタ
ーンを用いても周波数の競合が発生しないためである。At this time, there is no problem if the same frequency hopping pattern used between the control station and the relay station is assigned for communication between the relay station and the terminal station. This is because the frame is divided into a section between the control station and the relay station and a section between the relay station and the terminal station, so that even if the same frequency hopping pattern is used, no frequency conflict occurs.
【００２３】各中継局は制御局・中継局間用フレーム同
期チャネルを受信することで、制御局との間でフレーム
同期を確立し、確立したフレーム同期にあわせて中継局
・端末局間用フレーム同期チャネルを制御局によって割
り当てられた周波数ホッピングパターンを用いて送信す
る。Each relay station receives the frame synchronization channel between the control station and the relay station, thereby establishing frame synchronization with the control station, and in accordance with the established frame synchronization, the frame between the relay station and the terminal station. The synchronization channel is transmitted using the frequency hopping pattern assigned by the control station.
【００２４】端末局は、制御局・中継局間用フレーム同
期チャネルは受信せず、中継局・端末局間用フレーム同
期チャネルを受信することによって、制御局とのフレー
ム同期を確立する。The terminal station does not receive the frame synchronization channel between the control station and the relay station, but establishes frame synchronization with the control station by receiving the frame synchronization channel between the relay station and the terminal station.
【００２５】次に、本実施例における通信手順について
説明する。Next, a communication procedure in this embodiment will be described.
【００２６】最初に端末局から発呼する場合について説
明する。端末局がＩＦ部を介して接続している情報機器
等からのデータ送信要求があると、図６に示すように、
端末局は、中継局との間で、中継局・端末局間用論理制
御チャネルを用いて回線の接続を確立する。First, a case where a call is originated from a terminal station will be described. When there is a data transmission request from an information device or the like to which the terminal station is connected via the IF unit, as shown in FIG.
The terminal station establishes a line connection with the relay station using the logical control channel for the relay station and the terminal station.
【００２７】そして、回線確立後、中継局・端末局間用
データチャネルを用いてデータ通信を行う。このとき、
中継局・端末局間用論理制御チャネル、中継局・端末局
間用データチャネルとも、競合制御によってチャネルを
確保する。また、中継局は、端末局からのデータを一旦
バッファに格納する。After the line is established, data communication is performed using the data channel between the relay station and the terminal station. At this time,
Both the logical control channel for the relay station and the terminal station and the data channel for the relay station and the terminal station are secured by contention control. Further, the relay station temporarily stores data from the terminal station in a buffer.
【００２８】次に、中継局は、端末局との間の回線が確
立して一定時間経過後、または一定量のデータを受信し
た後に、制御局との間で、制御局・中継局間用論理制御
チャネルを用いて回線を確立する。Next, after a certain period of time has elapsed after the line with the terminal station has been established or a certain amount of data has been received, the relay station communicates with the control station between the control station and the relay station. A line is established using a logical control channel.
【００２９】そして、回線確立後、バッファに格納して
いる端末局からのデータを制御局・中継局間用データチ
ャネルを用いて制御局に送信する。このとき、制御局・
中継局間用論理制御チャネル、制御局・中継局間用デー
タチャネルとも、競合制御によってチャネルを確保す
る。After the line is established, the data from the terminal station stored in the buffer is transmitted to the control station using the data channel for the control station / relay station. At this time, the control station
Both the logical control channel between the relay stations and the data channel between the control station and the relay station secure channels by contention control.
【００３０】制御局は、ＩＦ部を介して接続している情
報機器等へデータ受信データを通知し、データを取り出
してもらう。[0030] The control station notifies the information equipment or the like connected via the IF section of the data reception data and has the data taken out.
【００３１】端末局は、すべてのデータを送信し終わる
と、中継局との間で中継局・端末局間用論理制御チャネ
ルを用いて回線の切断を行う。中継局・端末局間の回線
切断後、中継局は、制御局との間で制御局・中継局間用
論理制御チャネルを用いて回線を切断する。When all the data has been transmitted, the terminal station disconnects the line with the relay station using the logical control channel for the relay station and the terminal station. After disconnecting the line between the relay station and the terminal station, the relay station disconnects the line with the control station using the logical control channel for the control station and the relay station.
【００３２】次に、制御局から発呼する場合について説
明する。制御局がＩＦ部を介して接続している情報機器
等からのデータ送信要求があると、図７に示すように、
制御局は中継局との間で制御局・中継局間用論理制御チ
ャネルを用いて回線の接続を確立する。Next, a case where a call is originated from the control station will be described. When the control station receives a data transmission request from an information device or the like connected via the IF unit, as shown in FIG.
The control station establishes a line connection with the relay station using the control station / relay station logical control channel.
【００３３】そして、回線確立後、制御局・中継局間用
データチャネルを用いてデータ通信を行う。このとき、
制御局・中継局間用論理制御チャネル、制御局・中継局
間用データチャネルとも、競合制御によってチャネルを
確保する。また、中継局は、制御局からのデータを一旦
バッファに格納する。After the line is established, data communication is performed using the data channel between the control station and the relay station. At this time,
Both the logical control channel between the control station and the relay station and the data channel between the control station and the relay station are secured by contention control. Further, the relay station temporarily stores data from the control station in a buffer.
【００３４】中継局は、制御局との間の回線が確立して
一定時間経過後、または一定量のデータを受信した後
に、端末局との間で、中継局・端末局間用論理制御チャ
ネルを用いて回線を確立する。The relay station establishes a logical control channel between the relay station and the terminal station between the relay station and the terminal station after a certain period of time has elapsed after the line with the control station has been established or after a certain amount of data has been received. Establish a line using.
【００３５】そして、回線確立後、バッファに格納して
いる制御局からのデータを中継局・端末局間用データチ
ャネルを用いて端末局に送信する。このとき、中継局・
端末局間用論理制御チャネル、中継局・端末局間用デー
タチャネルとも、競合制御によってチャネルを確保す
る。After the line is established, the data from the control station stored in the buffer is transmitted to the terminal station using the data channel for the relay station and the terminal station. At this time,
Both the logical control channel between the terminal stations and the data channel between the relay station and the terminal station are secured by contention control.
【００３６】端末局は、ＩＦ部を介して接続している情
報機器等へデータ受信データを通知し、データを取り出
してもらう。The terminal station notifies the information equipment or the like connected via the IF unit of the data reception data and has the data extracted.
【００３７】制御局は、すべてのデータを送信し終わる
と、中継局との間で制御局・中継局間用論理制御チャネ
ルを用いて回線の切断を行う。中継局・制御局間の回線
切断後、中継局は、端末局との間で中継局・端末局間用
論理制御チャネルを用いて回線を切断する。After transmitting all the data, the control station disconnects the line with the relay station using the logical control channel between the control station and the relay station. After disconnecting the line between the relay station and the control station, the relay station disconnects the line with the terminal station using the logical control channel for the relay station and the terminal station.
【００３８】次に、本発明の第２実施例について説明す
る。Next, a second embodiment of the present invention will be described.
【００３９】この第２実施例では、上述した第１実施例
における中継局の中継方式を、中継局は、制御局と端末
局からの論理制御チャネルやデータチャネルを中継局内
で１フレーム分のデータを貯えて伝送する中継方法で実
現する。In the second embodiment, the relay method of the relay station in the first embodiment described above is different from that of the first embodiment in that the relay station transmits logical control channels and data channels from the control station and the terminal station to one frame of data in the relay station. It is realized by the relay method of storing and transmitting.
【００４０】図８は、端末局からの発呼手順を示す説明
図である。図中のＴｎはフレーム数を単位とする接続要
求から経過した時間を表す。ここでは、説明のため、制
御局や端末局での制御情報の処理時間を無視するものと
する。FIG. 8 is an explanatory diagram showing a procedure for calling from a terminal station. Tn in the figure indicates the time elapsed from the connection request in units of the number of frames. Here, for the sake of explanation, it is assumed that the processing time of the control information in the control station or the terminal station is ignored.
【００４１】端末局から中継局宛てにＴ１の中継局・端
末局間用論理制御チャネルで接続要求を送信すると、中
継局は、Ｔ２の制御局・中継局間用論理制御チャネルで
接続要求を制御局に送る。When a connection request is transmitted from the terminal station to the relay station on the logical control channel between the relay station and the terminal station in T1, the relay station controls the connection request on the logical control channel between the control station and the relay station in T2. Send to the station.
【００４２】制御局は、Ｔ３の制御局・中継局間用論理
制御チャネルで接続確認を中継局に送り、中継局は、Ｔ
３の中継局・端末局間用論理制御チャネルで接続確認を
端末局に送信する。The control station sends a connection confirmation to the relay station on the logical control channel between the control station and the relay station at T3.
The connection confirmation is transmitted to the terminal station through the logical control channel between the relay station and the terminal station 3.
【００４３】データチャネルも同様に、端末局から制御
局へ送信する場合、中継局は、端末局からのＴｎフレー
ムの中継局・端末局間用データチャネルで送られてきた
データはＴｎ＋１フレームの制御局・中継局間用データ
チャネルで制御局に送信し、制御局から端末局へ送信す
る場合、中継局は制御局からのＴｎフレームの制御局・
中継局間用データチャネルで送られてきたデータはＴｎ
フレームの中継局・端末局間用データチャネルで制御局
に送信する。Similarly, when the data channel is transmitted from the terminal station to the control station, the relay station uses the data channel transmitted between the relay station and the terminal station of the Tn frame from the terminal station to control the Tn + 1 frame. When transmitting to the control station through the data channel for the station and the relay station and transmitting from the control station to the terminal station, the relay station transmits the Tn frame from the control station to the control station.
The data sent on the data channel between relay stations is Tn
The frame is transmitted to the control station through the data channel between the relay station and the terminal station.
【００４４】データ通信終了後、端末局から中継局宛て
にＴｎの中継局・端末局間用論理制御チャネルで切断要
求を送信すると、中継局は、Ｔｎ＋１の制御局・中継局
間用論理制御チャネルで切断要求を制御局に送る。After the end of the data communication, when a disconnection request is transmitted from the terminal station to the relay station on the logical control channel between the relay station and the terminal station of Tn, the relay station transmits the logical control channel between the control station and the relay station of Tn + 1. Sends a disconnection request to the control station.
【００４５】制御局は、Ｔｎ＋２の制御局・中継局間用
論理制御チャネルで切断確認を中継局に送り、中継局
は、Ｔｎ＋２の中継局・端末局間用論理制御チャネルで
切断確認を端末局に送信する。The control station sends a disconnection confirmation to the relay station on the Tn + 2 logical control channel between the control station and the relay station, and the relay station confirms the disconnection on the Tn + 2 logical control channel between the relay station and the terminal station. Send to
【００４６】図９は、制御局からの発呼手順を示す説明
図である。図中のＴｎは、フレーム数を単位とする接続
要求から経過した時間を表す。ここでは、説明のため制
御局や端末局での制御情報の処理時間を無視する。FIG. 9 is an explanatory diagram showing a calling procedure from the control station. Tn in the drawing represents the time elapsed from the connection request in units of the number of frames. Here, for the sake of explanation, the processing time of the control information in the control station and the terminal station is ignored.
【００４７】制御局から中継局宛てにＴ１の制御局・中
継局間用論理制御チャネルで接続要求を送信すると、中
継局は、Ｔ１の中継局・端末局間用論理制御チャネルで
接続要求を端末局に送る。When the control station transmits a connection request to the relay station on the logical control channel between the control station and the relay station of T1, the relay station transmits the connection request on the logical control channel between the relay station and the terminal station of T1. Send to the station.
【００４８】端末局は、Ｔ２の中継局・端末局間用論理
制御チャネルで接続確認を中継局に送り、中継局は、Ｔ
３の制御局・中継局間用論理制御チャネルで接続確認を
制御局に送信する。The terminal station sends a connection confirmation to the relay station on the logical control channel between the relay station and the terminal station in T2, and the relay station
The connection confirmation is transmitted to the control station by the control station / relay station logical control channel 3.
【００４９】データチャネルも同様に、端末局から制御
局へ送信する場合、中継局は、端末局からのＴｎフレー
ムの中継局・端末局間用データチャネルで送られてきた
データはＴｎ＋１フレームの制御局・中継局間用データ
チャネルで制御局に送信し、制御局から端末局へ送信す
る場合、中継局は制御局からのＴｎフレームの制御局・
中継局間用データチャネルで送られてきたデータはＴｎ
フレームの中継局・端末局間用データチャネルで制御局
に送信する。Similarly, when transmitting the data channel from the terminal station to the control station, the relay station transmits the data transmitted from the terminal station on the data channel for the relay station / terminal station of the Tn frame to the control of the Tn + 1 frame. When transmitting to the control station through the data channel for the station and the relay station and transmitting from the control station to the terminal station, the relay station transmits the Tn frame from the control station to the control station.
The data sent on the data channel between relay stations is Tn
The frame is transmitted to the control station through the data channel between the relay station and the terminal station.
【００５０】データ通信終了後、制御局から中継局宛て
にＴｎの制御局・中継局間用論理制御チャネルで切断要
求を送信すると、中継局は、Ｔｎの中継局・端末局間用
論理制御チャネルで切断要求を端末局に送る。端末局
は、Ｔｎ＋１の中継局・端末局間用論理制御チャネルで
切断確認を中継局に送り、中継局は、Ｔｎ＋２の制御局
・中継局間用論理制御チャネルで切断確認を制御局に送
信する。After the data communication is completed, when the control station sends a disconnection request to the relay station on the logical control channel between the control station and the relay station of Tn, the relay station transmits the logical control channel for the relay station and the terminal station of Tn. Sends a disconnection request to the terminal station. The terminal station sends a disconnection confirmation to the relay station on the Tn + 1 logical control channel between the relay station and the terminal station, and the relay station transmits a disconnection confirmation to the control station on the Tn + 2 logical control channel between the control station and the relay station. .
【００５１】この手順で中継すると、中継局内でのメモ
リ使用量が少なくてすむという長所がある。Relaying in this procedure has the advantage that the amount of memory used in the relay station can be reduced.
【００５２】[0052]
【発明の効果】以上説明したように、本発明によれば、
制御局と端末局で伝送されるデータは必ず中継局によっ
て一度中継を行って伝送することから、無線装置に高価
な送信アンプを用いる必要なく、また、制御装置と無線
装置の間を長いケーブルによって有線接続を行う必要な
く、通信エリアを拡大できる。As described above, according to the present invention,
Since the data transmitted between the control station and the terminal station is always relayed once by the relay station and transmitted, there is no need to use an expensive transmission amplifier for the wireless device, and a long cable runs between the control device and the wireless device. The communication area can be expanded without requiring a wired connection.
【図１】本発明の一実施例で使用する無線通信装置の基
本構成を示す説明図である。FIG. 1 is an explanatory diagram illustrating a basic configuration of a wireless communication device used in an embodiment of the present invention.
【図２】上記実施例における通信システムの制御局、中
継局、端末局の通信エリアを示す説明図である。FIG. 2 is an explanatory diagram showing communication areas of a control station, a relay station, and a terminal station of the communication system in the embodiment.
【図３】上記実施例の通信システムで用いる無線フレー
ム構成を示す説明図である。FIG. 3 is an explanatory diagram showing a radio frame configuration used in the communication system of the embodiment.
【図４】上記実施例の通信システムで用いる周波数ホッ
ピングパターンの使用例を示す説明図である。FIG. 4 is an explanatory diagram showing a usage example of a frequency hopping pattern used in the communication system of the embodiment.
【図５】上記実施例の通信システムにおける制御局、中
継局、端末局の通信関係を示す階層図である。FIG. 5 is a hierarchical diagram showing a communication relationship among a control station, a relay station, and a terminal station in the communication system of the embodiment.
【図６】本発明の第１実施例における端末局からの発呼
手順を示す説明図である。FIG. 6 is an explanatory diagram showing a calling procedure from a terminal station in the first embodiment of the present invention.
【図７】上記第１実施例における制御局からの発呼手順
を示す説明図である。FIG. 7 is an explanatory diagram showing a calling procedure from a control station in the first embodiment.
【図８】本発明の第２実施例における端末局からの発呼
手順を示す説明図である。FIG. 8 is an explanatory diagram showing a calling procedure from a terminal station in the second embodiment of the present invention.
【図９】上記第２実施例における制御局からの発呼手順
を示す説明図である。FIG. 9 is an explanatory diagram showing a calling procedure from a control station in the second embodiment.
１…無線部（ＲＦ）、 ２…チャネルコーデック部（ＣＨＣ）、 ３…インターフェース部（ＩＦ）、 ４…制御部、 ５…アンテナ。 1. Radio section (RF), 2. Channel codec section (CHC), 3. Interface section (IF), 4. Control section, 5. Antenna.
Claims (13)
通信システムにおいて、 前記制御局と端末局で伝送されるデータは必ず中継局に
よって一度中継を行って伝送することを特徴とする無線
通信システム。1. A radio communication system having a control station, a relay station, and a terminal station, wherein data transmitted between the control station and the terminal station is always relayed once by the relay station and transmitted. Communications system.
めの制御局・中継局間用のフレーム同期チャネルと、制
御局と中継局との間でデータ通信を行う制御局・中継局
間用データチャネルと、中継局と端末局の間でフレーム
同期を確立するための中継局・端末局間用フレーム同期
チャネルと、中継局と端末局の間でデータ通信を行う中
継局・端末局間用データチャネルを設けたフレームを無
線通信に用いる無線通信システムにおいて、 各中継局は、制御局・中継局間用フレーム同期チャネル
を受信することでフレーム同期を確立し、また、確立し
た同期に合わせて中継局・端末局間用フレーム同期チャ
ネルを送信し、各端末局は、中継局・端末局間用フレー
ム同期チャネルを受信することでフレーム同期を確立
し、制御局と各端末局で伝送されるデータは必ず中継局
によって一度中継を行って伝送することを特徴とする無
線通信システム。2. The control station and the relay station according to claim 1, wherein a frame synchronization channel between the control station and the relay station for establishing frame synchronization between the control station and the relay station, and data between the control station and the relay station. A data channel between the control station and the relay station for communication, a frame synchronization channel between the relay station and the terminal station for establishing frame synchronization between the relay station and the terminal station, and a data channel between the relay station and the terminal station. In a wireless communication system using a frame provided with a data channel for relay stations and terminal stations for communication in wireless communication, each relay station establishes frame synchronization by receiving a frame synchronization channel for control station and relay station. In addition, the relay station and the terminal station transmit a frame synchronization channel in synchronization with the established synchronization, and each terminal station receives the frame synchronization channel between the relay station and the terminal station to perform frame synchronization. Wireless communication system, characterized by transmitting a time by performing the relay by standing City, data transmitted by the control station and each terminal station always relay station.
ことを特徴とする無線通信システム。3. The wireless communication system according to claim 1, wherein the frame is communicated by a frequency hopping method.
フレーム化したデータを渡し、また、前記無線部からの
受信データにフレーム分解処理を施してデータを取り出
すチャネルコーデック部と、情報機器とデータをやり取
りするためのインターフェース部と、前記各部を制御す
る制御部とを有する無線通信装置によって構成されるこ
とを特徴とする無線通信システム。4. The communication station according to claim 1, wherein each of the communication stations transmits a radio signal for transmitting / receiving a radio wave, framed data to the radio signal, and receives data from the radio signal. And a wireless communication device having a channel codec unit for extracting data by performing frame disassembly processing, an interface unit for exchanging data with information equipment, and a control unit for controlling the above units. Wireless communication system.
一定時間経過後、または、一定データ量受信後に、デー
タを端末局に送信することを特徴とする無線通信システ
ム。5. The relay station according to claim 1, wherein the relay station temporarily stores data from the control station in the relay station,
A wireless communication system for transmitting data to a terminal station after a lapse of a certain time or after receiving a certain amount of data.
一定時間経過後、または、一定データ量受信後に、デー
タを制御局に送信することを特徴とする無線通信システ
ム。6. The relay station according to claim 1, wherein the relay station temporarily stores data from the terminal station in the relay station,
A wireless communication system for transmitting data to a control station after a lapse of a fixed time or after receiving a fixed amount of data.
ータチャネルを中継局内で１フレーム分のデータを貯え
て伝送する無線通信システム。7. The wireless communication system according to claim 1, wherein the relay station stores one frame of data and transmits a logical control channel or a data channel from the control station and the terminal station in the relay station. system.
無線通信方法において、 前記制御局と端末局で伝送されるデータは必ず中継局に
よって一度中継を行って伝送することを特徴とする無線
通信方法。8. A wireless communication method for performing wireless communication between a control station and a terminal station, wherein data transmitted between the control station and the terminal station is always relayed once by a relay station and transmitted. Wireless communication method.
制御局・中継局間用のフレーム同期チャネルと、制御局
と中継局との間でデータ通信を行う制御局・中継局間用
データチャネルと、中継局と端末局の間でフレーム同期
を確立するための中継局・端末局間用フレーム同期チャ
ネルと、中継局と端末局の間でデータ通信を行う中継局
・端末局間用データチャネルを設けたフレームを無線通
信に用いる無線通信方法において、 各中継局は、制御局・中継局間用フレーム同期チャネル
を受信することでフレーム同期を確立し、また、確立し
た同期に合わせて中継局・端末局間用フレーム同期チャ
ネルを送信し、各端末局は、中継局・端末局間用フレー
ム同期チャネルを受信することでフレーム同期を確立
し、制御局と各端末局で伝送されるデータは必ず中継局
によって一度中継を行って伝送することを特徴とする無
線通信方法。9. The communication system according to claim 8, wherein a frame synchronization channel between the control station and the relay station for establishing frame synchronization between the control station and the relay station, and data communication between the control station and the relay station. A data channel between the control station and the relay station, a frame synchronization channel between the relay station and the terminal station for establishing frame synchronization between the relay station and the terminal station, and data communication between the relay station and the terminal station. In a wireless communication method using a frame provided with a data channel for relay stations and terminal stations for wireless communication, each relay station establishes frame synchronization by receiving a frame synchronization channel for control station and relay station. Also, the relay station / terminal station frame synchronization channel is transmitted in accordance with the established synchronization, and each terminal station establishes frame synchronization by receiving the relay station / terminal station frame synchronization channel, Radio communication method characterized by transmitting a time by performing a relay by data always relay station to be transmitted in your station and each terminal station.
ことを特徴とする無線通信方法。10. The wireless communication method according to claim 8, wherein the frames are communicated by a frequency hopping method.
て、 中継局は、制御局からのデータを一度中継局内に貯え、
一定時間経過後、または、一定データ量受信後に、デー
タを端末局に送信することを特徴とする無線通信方法。11. The relay station according to claim 8, wherein the relay station temporarily stores data from the control station in the relay station,
A wireless communication method characterized by transmitting data to a terminal station after a lapse of a fixed time or after receiving a fixed amount of data.
て、 中継局は、端末局からのデータを一度中継局内に貯え、
一定時間経過後、または、一定データ量受信後に、デー
タを制御局に送信することを特徴とする無線通信方法。12. The relay station according to claim 8, wherein the relay station temporarily stores data from the terminal station in the relay station,
A wireless communication method characterized by transmitting data to a control station after a lapse of a certain time or after receiving a certain amount of data.
て、 中継局は、制御局と端末局からの論理制御チャネルやデ
ータチャネルを中継局内で１フレーム分のデータを貯え
て伝送する無線通信方法。13. The wireless communication system according to claim 9, wherein the relay station stores and transmits one frame of data in a logical control channel or a data channel from the control station and the terminal station in the relay station. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9017876A JPH10209957A (en) | 1997-01-16 | 1997-01-16 | Radio communication system and its method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9017876A JPH10209957A (en) | 1997-01-16 | 1997-01-16 | Radio communication system and its method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10209957A true JPH10209957A (en) | 1998-08-07 |
Family
ID=11955899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9017876A Pending JPH10209957A (en) | 1997-01-16 | 1997-01-16 | Radio communication system and its method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10209957A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100861930B1 (en) | 2006-03-03 | 2008-10-09 | 삼성전자주식회사 | Apparatus and method for supporting relay service in multi-hop relay broadband wireless access communication system |
| KR100901374B1 (en) | 2005-10-06 | 2009-06-05 | 삼성전자주식회사 | Apparatus and method for supporting multi link without interference the inside of cell in multi-hop relay cellular network |
| US8040826B2 (en) | 2006-03-03 | 2011-10-18 | Samsung Electronics Co., Ltd | Apparatus and method for supporting relay service in a multi-hop relay broadband wireless access communication system |
| JP2012070350A (en) * | 2010-04-21 | 2012-04-05 | Mitsubishi Electric Corp | Radio communication method |
-
1997
- 1997-01-16 JP JP9017876A patent/JPH10209957A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100901374B1 (en) | 2005-10-06 | 2009-06-05 | 삼성전자주식회사 | Apparatus and method for supporting multi link without interference the inside of cell in multi-hop relay cellular network |
| KR100861930B1 (en) | 2006-03-03 | 2008-10-09 | 삼성전자주식회사 | Apparatus and method for supporting relay service in multi-hop relay broadband wireless access communication system |
| US8040826B2 (en) | 2006-03-03 | 2011-10-18 | Samsung Electronics Co., Ltd | Apparatus and method for supporting relay service in a multi-hop relay broadband wireless access communication system |
| JP2012070350A (en) * | 2010-04-21 | 2012-04-05 | Mitsubishi Electric Corp | Radio communication method |
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