JPH07283780A - Mobile radio communication system - Google Patents

Mobile radio communication system

Info

Publication number
JPH07283780A
JPH07283780A JP7112606A JP11260695A JPH07283780A JP H07283780 A JPH07283780 A JP H07283780A JP 7112606 A JP7112606 A JP 7112606A JP 11260695 A JP11260695 A JP 11260695A JP H07283780 A JPH07283780 A JP H07283780A
Authority
JP
Japan
Prior art keywords
fixed
antenna
station
service area
mobile
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7112606A
Other languages
Japanese (ja)
Inventor
Izumi Ishii
泉 石井
Tadao Udagawa
忠雄 宇田川
Yoichi Kawabe
洋一 河辺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kokusai Denki Engineering Co Ltd
Original Assignee
Kokusai Denki Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kokusai Denki Engineering Co Ltd filed Critical Kokusai Denki Engineering Co Ltd
Priority to JP7112606A priority Critical patent/JPH07283780A/en
Publication of JPH07283780A publication Critical patent/JPH07283780A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To expand the incoming line service area narrower than the outgoing line service area and to match the mutual communication service area with the outgoing line service area in the fixed station and the mobile station mutual communication by low-power radio. CONSTITUTION:When a mobile station 4 is located at a hatched part 9 which is nearer than the arrival distance r0 of the radio wave sent out from a fixed- type antenna 2 of a fixed station 1 and is farther than the distance r1 at which the radiowave sent out from a compact antenna 3 of a mobile device 4 reaches to the fixed station 1, the compact antenna 3 of the self station having the same performance as the fixed-type antenna 2 is designed so that by switching and connecting with a fixed-type antenna 7 for repeater arranged on the hatched part 9, the mutual communication can be performed with the fixed station 1.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は移動無線通信方式に関
し、特にサービスエリアの改善に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile radio communication system, and more particularly to improvement of a service area.

【0002】[0002]

【従来の技術】一般に、固定局と携帯型移動局が無線通
信を行なう移動無線通信方式において、固定局と移動局
に設定された電波法規制による無線出力が等しい場合
は、固定局送信系の下り回線サービスエリアと移動局送
信系の上り回線サービスエリアは、面積がほぼ等しい円
形領域となり、送信波の到達距離が等しくなる。しかし
ながら、小電力無線の構内無線装置の場合、固定局に備
えられた固定型アンテナは、例えば、スリーブアンテナ
が用いられるが、移動機は携帯用のため小形化が図ら
れ、アンテナは、例えば、小形のホイップアンテナ等が
用いられている。そのため、固定局に備えられた固定型
アンテナのアンテナ利得は、移動局の小形アンテナのア
ンテナ利得に比べて大であるため、下り回線のサービス
エリアは、アンテナ利得の小さい上り回線サービスエリ
アに制限縮小され、相互移動無線通信における下り回線
の固有のサービスエリアの利用効率は百パーセントでは
ないという欠点がある。すなわち、固定局からの電波を
移動局が受信することができるが、移動局から固定局に
対する送信波が固定局で受信できないため相互通信がで
きない領域が存在するという欠点がある。移動通信にお
いては、上述のような欠点が常に潜在し、改善を要する
課題となっている。
2. Description of the Related Art Generally, in a mobile wireless communication system in which a fixed station and a portable mobile station perform wireless communication, when the fixed station and the mobile station have the same radio output according to the radio regulation, the fixed station transmission system The downlink service area and the uplink service area of the mobile station transmission system are circular areas having substantially the same area, and the transmission waves reach the same distance. However, in the case of a low-power wireless premises radio device, a fixed antenna provided in a fixed station is, for example, a sleeve antenna, but the mobile device is portable and therefore miniaturized, and the antenna is, for example, Small whip antennas are used. Therefore, the antenna gain of the fixed antenna provided in the fixed station is larger than the antenna gain of the small antenna of the mobile station, so the downlink service area is limited to the uplink service area with a small antenna gain. However, there is a drawback that the utilization efficiency of the downlink unique service area in mutual mobile radio communication is not 100%. That is, the mobile station can receive the radio wave from the fixed station, but there is a drawback that there is an area where mutual communication cannot be performed because the transmission wave from the mobile station to the fixed station cannot be received by the fixed station. In mobile communication, the above-mentioned drawbacks are always latent and have become problems to be improved.

【0003】[0003]

【発明が解決しようとする課題】上記課題を解決するた
め、移動局装置に2種類のアンテナを設けて切替え使用
したり、外部アンテナ接続用のコネクタを設けて外部の
増幅器付アンテナを切替え使用できるように構成した例
が開示されている。しかしながら、その具体的なシステ
ムについては開示された例がない。そこで、本発明が解
決しようとする課題は、前述のような下り回線と上り回
線のサービスエリアの差を減縮し、上り回線の固有のサ
ービスエリアを拡大して、下り回線の固有のサービスエ
リアの利用効率を百パーセントにすることにより、無線
通信における総合機能の向上および総合コストの低減を
図り、付加価値向上を図った移動無線通信方式を提供す
ることである。
In order to solve the above problems, the mobile station apparatus can be provided with two types of antennas for switching use, or a connector for connecting an external antenna can be provided for switching use of an external antenna with an amplifier. An example configured as described above is disclosed. However, there is no disclosed example of the specific system. Therefore, the problem to be solved by the present invention is to reduce the difference between the service areas of the downlink and the uplink as described above, expand the service area specific to the uplink, and It is intended to provide a mobile radio communication system that improves the added value by improving the total function and reducing the total cost in radio communication by making the utilization efficiency 100%.

【0004】[0004]

【課題を解決するための手段】本発明の移動無線通信方
式は、固定型アンテナを備えた固定局と、外部アンテナ
接続用コネクタを有し実装された小形アンテナを切換え
スイッチで外部アンテナに切換え接続できるように構成
された移動局とが相互通信を行う移動無線通信方式にお
いて、前記固定局からの距離が、前記固定局の固定型ア
ンテナから送出される電波の到達距離より小さく、か
つ、前記移動局の小形アンテナから送出される電波の到
達距離より大きい位置に、前記固定型アンテナと同等の
性能を有する中継用固定型アンテナが配置され、前記移
動局が前記中継用固定型アンテナの配置位置の近傍に位
置したとき、前記外部アンテナ接続用コネクタに該中継
用固定型アンテナを接続して、該移動局が前記固定局と
相互通信を行うように構成したことを特徴とするもので
ある。
According to the mobile radio communication system of the present invention, a fixed station equipped with a fixed antenna and a small antenna equipped with a connector for connecting an external antenna are connected to the external antenna by a changeover switch. In a mobile radio communication system configured to perform mutual communication with a mobile station, a distance from the fixed station is smaller than a reach distance of a radio wave transmitted from a fixed antenna of the fixed station, and the mobile station The fixed antenna for relay having the same performance as the fixed antenna is arranged at a position larger than the reach of the radio wave transmitted from the small antenna of the station, and the mobile station is arranged at the position where the fixed antenna for relay is arranged. When located in the vicinity, connect the fixed antenna for relay to the connector for external antenna connection so that the mobile station can communicate with the fixed station. It is characterized in that the configuration was.

【0005】[0005]

【実施例】以下、図面により本発明を詳細に説明する。
図1は本発明の実施例を示す説明図であり、図1(A)
はサービスエリアの平面図であり、(B)は部分詳細側
面図である。図において、1は送受信兼用の固定型アン
テナ2を備えた固定局であり、送信部(f2 ),受信部
(f1 )を有し、その送信部(f2 )の電波出力はP0
とする。4は送受信兼用小形アンテナ3を備えた携帯型
移動機であり、送信部(f1 ),受信部(f2 )を有
し、その送信部(f1 )の電波出力はP0 とする。この
0 は電波法(例えば、小電力無線)による規制出力で
ある。11は入出力兼用コネクタ、8はアンテナコー
ド、12はアンテナ切換スイッチである。7は送受信兼
用の中継用固定型アンテナであり、このアンテナ利得は
固定局の固定型アンテナ2のアンテナ利得と等しくなる
ように設定してある。10はアンテナコネクタであり、
前記コネクタ11とアンテナコード8によって接続でき
る構造である。また、中継用固定型アンテナ7は、
(A)に示した斜線領域9内の予め選定された各地点、
例えば、A0 ,B0 ,C0 ,D0 ,E0 に設置してあ
る。
The present invention will be described in detail below with reference to the drawings.
FIG. 1 is an explanatory view showing an embodiment of the present invention, and FIG.
Is a plan view of a service area, and (B) is a partial detailed side view. In the figure, 1 is a fixed station equipped with a fixed antenna 2 for both transmission and reception, and has a transmission section (f 2 ) and a reception section (f 1 ), and the radio wave output of the transmission section (f 2 ) is P 0.
And Reference numeral 4 denotes a portable mobile device provided with a small antenna 3 for both transmission and reception, which has a transmitter (f 1 ) and a receiver (f 2 ), and the radio wave output of the transmitter (f 1 ) is P 0 . This P 0 is a regulated output according to the Radio Law (for example, low power radio). Reference numeral 11 is an input / output connector, 8 is an antenna cord, and 12 is an antenna changeover switch. Reference numeral 7 denotes a relay fixed antenna for both transmission and reception, and this antenna gain is set to be equal to the antenna gain of the fixed antenna 2 of the fixed station. 10 is an antenna connector,
It is a structure that can be connected to the connector 11 by the antenna cord 8. In addition, the fixed antenna 7 for relay is
Preselected points in the shaded area 9 shown in (A),
For example, they are installed at A 0 , B 0 , C 0 , D 0 and E 0 .

【0006】5は半径r1 の円形エリアである。M1
移動者である。移動者M1 が移動機4を携行してアンテ
ナ切換スイッチ12を小形アンテナ3側へ操作切換えた
とき固定局1と相互間に確保できる通信サービスエリア
が円形エリア5である。すなわち、円形エリア5は移動
無線機4が自機に実装された小形アンテナ3を使用して
送信したとき固定局が受信できる上り回線サービスエリ
アである。6は半径r0 の円形エリアであり、固定局1
からの送信波を移動機4が実用的に受信できる下り回線
サービスエリアである。移動者M1 が半径r1 の上り回
線サービスエリア5の外側で、かつ、半径r0 の下り回
線サービスエリア6の内側に位置したとき、即ち斜線領
域9に位置したとき、固定局からの電波は受信できる
が、移動局からの電波は固定局に届かない。そこで、移
動者M1 がアンテナ切換スイッチ12をアンテナコード
8側に切換えて、地点A0 において、入出力兼用コネク
タ11をアンテナコネクタ10にコード8で接続し、中
継用固定型アンテナ7によって固定局に対して電波を送
出することにより、固定局1との相互通信が確保でき
る。従って、斜線領域9は半固定無線通信サービスエリ
アといえる。移動者M1 は斜線領域9内の各地点A0
0 ,C0 ,D0 ,E0 において、この半固定無線通信
を確保することができる。
Reference numeral 5 is a circular area having a radius r 1 . M 1 is a migrant. A circular service area 5 is a communication service area which can be secured between the fixed station 1 and the fixed station 1 when the user M 1 carries the mobile device 4 and switches the antenna changeover switch 12 to the small antenna 3 side. That is, the circular area 5 is an uplink service area that can be received by the fixed station when the mobile radio 4 transmits using the small antenna 3 mounted on the mobile radio 4. Reference numeral 6 is a circular area having a radius r 0 , and the fixed station 1
This is a downlink service area in which the mobile station 4 can practically receive the transmission wave from. When the moving person M 1 is located outside the uplink service area 5 having the radius r 1 and inside the downlink service area 6 having the radius r 0 , that is, when it is located in the shaded area 9, the radio wave from the fixed station Can be received, but the radio waves from the mobile station do not reach the fixed station. Therefore, the moving person M 1 switches the antenna changeover switch 12 to the antenna code 8 side, and at the point A 0 , the input / output connector 11 is connected to the antenna connector 10 with the code 8 and the fixed station for relay is fixed by the fixed antenna 7. Mutual communication with the fixed station 1 can be secured by transmitting radio waves to the. Therefore, the shaded area 9 can be said to be a semi-fixed wireless communication service area. The migrant M 1 is at each point A 0 in the shaded area 9,
This semi-fixed wireless communication can be secured at B 0 , C 0 , D 0 , and E 0 .

【0007】図1(B)は中継用固定型アンテナ7に移
動機4をアンテナコード8によって接続した状態を示す
側面図である。図において、13は収納箱、14は接続
部、15は支柱、16は接地線、17は送受話器であ
る。支柱15の高さhは、移動機4の携帯者が便利なよ
うに約1.5mに設定される。また、アンテナコード8
は、コネクタ10を省いて接続部14に固定接続してお
いてもよい。
FIG. 1B is a side view showing a state in which the mobile unit 4 is connected to the fixed relay antenna 7 by the antenna cord 8. In the figure, 13 is a storage box, 14 is a connection part, 15 is a support, 16 is a ground wire, and 17 is a handset. The height h of the support column 15 is set to about 1.5 m for the convenience of the carrier of the mobile device 4. Also, antenna code 8
May be fixedly connected to the connecting portion 14 by omitting the connector 10.

【0008】[0008]

【作用】[Action]

(イ) 移動局が円形エリア5の内側に位置するとき。 移動者M1 が固定局1と移動無線通信を行なう場合、図
1において、移動者M1 が、アンテナ切換スイッチ12
を小型アンテナ3側へ操作切換えて、移動機4からf1
波を送信すると、f1 波は4→12→3を経て空間へ放
射されて固定型アンテナ2で受信される。固定局1はf
1 波の受信に対応してf2 波を送信すれば、f2 波は小
型アンテナ3で受信される。ここで、移動者M1 と固定
局1との相互回線が確保されるので、移動者M1 は領域
5内における固定局1との移動無線通信を行なうことが
できる。この場合、固定型アンテナ2のアンテナ利得は
小型アンテナ3のアンテナ利得に比べて大であるが、移
動無線通信におけるサービスエリア円形領域5は、小型
アンテナ3のアンテナ利得に対応したサービスエリア
(半径r1 )で設定されることになる。固定型アンテナ
2のアンテナ利得に対応した下り回線の固有のサービス
エリア(半径r0 )は、前記半径r1 (上り回線の固有
のサービスエリア)に制限縮小されるから、前記半径r
0 の利用効率は百バーセントではない。しかし、移動し
ながらの無線通信機能は確保される。
(B) When the mobile station is located inside the circular area 5. If the mobile user M 1 performs mobile wireless communication with the fixed station 1, in FIG. 1, the mobile user M 1, the antenna changeover switch 12
To the small antenna 3 side, and from the mobile unit 4 to f 1
When the wave is transmitted, the f 1 wave is radiated into space through 4 → 12 → 3 and is received by the fixed antenna 2. Fixed station 1 is f
If the f 2 wave is transmitted in response to the reception of one wave, the f 2 wave is received by the small antenna 3. Here, since the mutual line between the mover M 1 and the fixed station 1 is secured, the mover M 1 can perform mobile radio communication with the fixed station 1 in the area 5. In this case, the antenna gain of the fixed antenna 2 is larger than the antenna gain of the small antenna 3, but the service area circular region 5 in mobile radio communication has a service area (radius r corresponding to the antenna gain of the small antenna 3). It will be set in 1 ). Since the downlink unique service area (radius r 0 ) corresponding to the antenna gain of the fixed antenna 2 is limited to the radius r 1 (uplink unique service area), the radius r
The utilization efficiency of 0 is not a hundred percent. However, the wireless communication function while moving is ensured.

【0009】(ロ) 移動局が円形エリア5の外側でか
つ、円形エリア6の内側に位置するとき。 移動者M1 が固定局1と半固定無線通信を行なう場合、
図1において、例えば、移動者M1 がA0 点において半
固定無線通信を行なう場合について述べる。移動者M1
がアンテナ切換スイッチ12をアンテナコード8の側に
切換えて、出力兼用コネクタ11をアンテナコネクタ1
0にコード8で接続する。ここで、移動機4からf1
を送信すると、f1 波は4→12→11→8→10→7
を経て空間へ放射され、固定型アンテナ2で受信され
る。固定局1は、f1 波の受信に対応してf2 波を送信
すれば、f2 波は前記地点A0 の中継用固定型アンテナ
7で受信される。ここで、中継用固定型アンテナ7を中
継して移動者M1 と固定局1との相互回線が確保され
る。この場合、中継用固定型アンテナ7のアンテナ利得
と固定型アンテナ2のアンテナ利得は、ほぼ同等利得に
設定してあるので、中継用固定型アンテナ7および固定
型アンテナ2のアンテナ利得に対応したサービスエリア
は、下り回線の固有のサービスエリア(半径r0 )と上
り回線の固有のサービスエリア(半径r0 )とが等しく
なる。すなわち、半径r0 の下り回線の固有のサービス
エリアの利用効率は100パーセントとなりサービスエ
リアの拡大となる。半固定無線通信の実効サービスエリ
アは斜線領域9であるので、斜線領域9内に図示してあ
るB0 ,C0 ,D0 点およびE0 点においても前述した
0 点の場合と同じ要領で半固定無線通信を確保するこ
とができる。
(B) When the mobile station is located outside the circular area 5 and inside the circular area 6. When the mobile person M 1 performs semi-fixed wireless communication with the fixed station 1,
In FIG. 1, for example, a case where the moving person M 1 performs semi-fixed wireless communication at point A 0 will be described. Migrant M 1
Switches the antenna changeover switch 12 to the side of the antenna cord 8, and the output / combined connector 11 is connected to the antenna connector 1
Connect to 0 with code 8. Here, when the f 1 wave is transmitted from the mobile device 4, the f 1 wave is 4 → 12 → 11 → 8 → 10 → 7.
Is radiated into the space through the and received by the fixed antenna 2. When the fixed station 1 transmits the f 2 wave in response to the reception of the f 1 wave, the f 2 wave is received by the fixed relay antenna 7 at the point A 0 . Here, the relay fixed antenna 7 is relayed to secure the mutual line between the moving person M 1 and the fixed station 1. In this case, the antenna gain of the relay fixed antenna 7 and the antenna gain of the fixed antenna 2 are set to be substantially equal to each other, so that the services corresponding to the antenna gains of the relay fixed antenna 7 and the fixed antenna 2 are provided. In the area, the unique service area of the downlink (radius r 0 ) and the unique service area of the uplink (radius r 0 ) are equal. That is, the utilization efficiency of the unique service area of the downlink having the radius r 0 is 100%, and the service area is expanded. Since the effective service area of the semi-fixed wireless communication is the shaded area 9, the points B 0 , C 0 , D 0 and E 0 shown in the shaded area 9 are the same as in the case of the point A 0 described above. Therefore, semi-fixed wireless communication can be secured.

【0010】次に、半固定無線通信を含む移動無線通信
の運用について述べる。図1において、予め設定された
円形エリア5の移動無線通信サービスエリアと斜線領域
9の半固定無線通信サービスエリアに関してそれぞれの
運用基準を予め制定する。例えば、 (1)サービスエリア5内のとき、移動者M1 は前記移
動無線通信の操作要領により、固定局1との相互業務通
報等を適宜迅速に行なう。 (2)サービスエリア9において、移動者M1 は前記半
固定無線通信の操作要領により、前記情報管理地点(A
0 ,B0 ,C0 ,D0 ,E0 等)を順次巡回して、固定
局1と各地点における半固定無線通信を確保し、固定局
1との相互業務通報は勿論のこと、前記各地点の管理情
報を移動者M1 が固定局1へ伝送し、固定局1では、こ
の管理情報を一定サイクルにて記録管理する。 (3)現場作業の進捗状況および緊急臨時の現場状況に
対応した現場管理区域等(明かり区域およびトンネル区
域を含む)の無線サービスエリアを構築する場合におい
て、領域9内の地点A0 ,B0 ,C0 ,D0 ,E0 およ
び固定型アンテナ2の他の設置地点のすべてに、中継用
固定型アンテナ7(アンテナコネクタ10付)を臨時に
仮設して、前記の半固定無線通信を含む移動無線通信を
確保し、現場状況に臨機に対応できるフレキシブルサー
ビスエリアを形成できる。尚、この場合、固定局1は可
搬型簡易固定局を使用することにより、その運用効率の
向上が図られる。
Next, the operation of mobile radio communication including semi-fixed radio communication will be described. In FIG. 1, the operation standards of the mobile radio communication service area of the circular area 5 and the semi-fixed radio communication service area of the shaded area 9 which are set in advance are established in advance. For example, (1) When in the service area 5, the mover M 1 promptly issues a mutual work report or the like with the fixed station 1 according to the operating procedure of the mobile radio communication. (2) In the service area 9, the moving person M 1 operates according to the operation procedure of the semi-fixed wireless communication, and the information management point (A
0 , B 0 , C 0 , D 0 , E 0, etc.) in order to secure semi-fixed wireless communication with the fixed station 1 at each point, not to mention mutual work notification with the fixed station 1. The mobile person M 1 transmits the management information of each point to the fixed station 1, and the fixed station 1 records and manages this management information in a fixed cycle. (3) In the case of constructing a wireless service area such as a site management area (including a light area and a tunnel area) corresponding to the progress situation of the site work and the situation of the emergency occasion, the points A 0 and B 0 within the area 9 , C 0 , D 0 , E 0 and the fixed antenna 2 at all other installation points, the relay fixed antenna 7 (with the antenna connector 10) is temporarily installed to include the semi-fixed wireless communication. It is possible to secure a mobile wireless communication and form a flexible service area that can flexibly respond to site conditions. In this case, the fixed station 1 is a portable simple fixed station, so that its operation efficiency can be improved.

【0011】[0011]

【発明の効果】以上詳細に説明したように、本発明によ
れば、携帯型移動局と固定局の相互移動無線に潜在する
上り回線と下り回線の各固有のサービスエリア利用効率
が百パーセントでないという従来の欠点が改善される。
しかも、本発明は前述した〔作用〕でも明白であるよう
に、従来の固定型アンテナの固有機能および従来の携帯
型移動局の固有機能を維持したまま、無線通信の全体シ
ステムコストを低減することができ、当該全体システム
の付加価値向上を大にできるものである。以上のような
改善の結果として、本発明は前述した〔作用〕でも明白
であるように、従来の技術においては困難であったフレ
キシブルサービスエリアを形成できるので、恒久的設備
および現場緊急状況又は現場進捗状況に対応できる臨時
的設備として、いずれかに自由に選択対応できるので、
その利用価値は大きい。上記のように、本発明の効果は
極めて大である。
As described above in detail, according to the present invention, the utilization efficiency of each unique service area of the uplink and the downlink which is latent in the mutual mobile radio of the portable mobile station and the fixed station is not 100%. The drawbacks of the prior art are improved.
Moreover, the present invention reduces the overall system cost of wireless communication while maintaining the peculiar function of the conventional fixed antenna and the peculiar function of the conventional portable mobile station, as is apparent from the above-mentioned [action]. Therefore, the added value of the entire system can be greatly improved. As a result of the above-mentioned improvements, the present invention can form a flexible service area, which was difficult in the prior art, as is clear from the above-mentioned [action], and therefore, permanent equipment and a site emergency situation or site. As temporary equipment that can respond to the progress status, you can freely select and respond to either,
Its utility value is great. As described above, the effect of the present invention is extremely large.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施例を示す構成例図である。FIG. 1 is a configuration example diagram showing an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 固定局 2 送受信兼用固定型アンテナ 3 送受信兼用小型アンテナ 4 移動機 5 半径r1 の円形サービスエリア 6 半径r0 の円形サービスエリア 7 中継用固定型アンテナ 8 アンテナコード 9 半固定無線通信サービスエリア 10 アンテナコネクタ 11 入出力兼用コネクタ 12 アンテナ切換スイッチ 13 収納箱 14 接続部 15 支柱 16 接地線 17 送受話器1 fixed station 2 fixed antenna for both transmission and reception 3 small antenna for both transmission and reception 4 mobile 5 circular service area with radius r 1 6 circular service area with radius r 0 7 fixed antenna for relay 8 antenna code 9 semi-fixed wireless communication service area 10 Antenna connector 11 Input / output combined connector 12 Antenna changeover switch 13 Storage box 14 Connection part 15 Strut 16 Ground wire 17 Handset

フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 H04B 7/26 105 A 109 A Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location H04B 7/26 105 A 109 A

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 固定型アンテナを備えた固定局と、外部
アンテナ接続用コネクタを有し実装された小形アンテナ
を切換えスイッチで外部アンテナに切換え接続できるよ
うに構成された移動局とが相互通信を行う移動無線通信
方式において、 前記固定局からの距離が、前記固定局の固定型アンテナ
から送出される電波の到達距離より小さく、かつ、前記
移動局の小形アンテナから送出される電波の到達距離よ
り大きい位置に、前記固定型アンテナと同等の性能を有
する中継用固定型アンテナが配置され、 前記移動局が前記中継用固定型アンテナの配置位置の近
傍に位置したとき、前記外部アンテナ接続用コネクタに
該中継用固定型アンテナを接続して、該移動局が前記固
定局と相互通信を行うように構成したことを特徴とする
移動無線通信方式。
1. A mutual exchange is performed between a fixed station having a fixed antenna and a mobile station configured so that a small antenna mounted with an external antenna connecting connector can be switched and connected to the external antenna by a changeover switch. In the mobile radio communication system to be performed, the distance from the fixed station is smaller than the reaching distance of the radio wave transmitted from the fixed antenna of the fixed station, and the reaching distance of the radio wave transmitted from the small antenna of the mobile station. A fixed fixed antenna for relay having the same performance as the fixed antenna is arranged at a large position, and when the mobile station is located in the vicinity of the position where the fixed fixed antenna for relay is arranged, the connector for external antenna connection is provided. A mobile radio communication system, characterized in that the fixed station for relay is connected to the mobile station for mutual communication with the fixed station.
JP7112606A 1995-04-14 1995-04-14 Mobile radio communication system Pending JPH07283780A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7112606A JPH07283780A (en) 1995-04-14 1995-04-14 Mobile radio communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7112606A JPH07283780A (en) 1995-04-14 1995-04-14 Mobile radio communication system

Publications (1)

Publication Number Publication Date
JPH07283780A true JPH07283780A (en) 1995-10-27

Family

ID=14590945

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7112606A Pending JPH07283780A (en) 1995-04-14 1995-04-14 Mobile radio communication system

Country Status (1)

Country Link
JP (1) JPH07283780A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2427792A (en) * 2005-06-29 2007-01-03 Toshiba Res Europ Ltd Resource allocation in a Communication System using OFDMA.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62126726A (en) * 1985-11-27 1987-06-09 Matsushita Electric Ind Co Ltd On-vehicle relay method for automobile telephone set
JPS62207034A (en) * 1986-03-07 1987-09-11 Nippon Telegr & Teleph Corp <Ntt> Radio repeater
JPH03184429A (en) * 1989-12-14 1991-08-12 Nec Corp Portable radiotelephony system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62126726A (en) * 1985-11-27 1987-06-09 Matsushita Electric Ind Co Ltd On-vehicle relay method for automobile telephone set
JPS62207034A (en) * 1986-03-07 1987-09-11 Nippon Telegr & Teleph Corp <Ntt> Radio repeater
JPH03184429A (en) * 1989-12-14 1991-08-12 Nec Corp Portable radiotelephony system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2427792A (en) * 2005-06-29 2007-01-03 Toshiba Res Europ Ltd Resource allocation in a Communication System using OFDMA.
GB2427792B (en) * 2005-06-29 2008-04-02 Toshiba Res Europ Ltd Wireless communications system

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