JPH02105733A - Composite mobile communication system - Google Patents
Composite mobile communication systemInfo
- Publication number
- JPH02105733A JPH02105733A JP63258533A JP25853388A JPH02105733A JP H02105733 A JPH02105733 A JP H02105733A JP 63258533 A JP63258533 A JP 63258533A JP 25853388 A JP25853388 A JP 25853388A JP H02105733 A JPH02105733 A JP H02105733A
- Authority
- JP
- Japan
- Prior art keywords
- satellite
- exchange
- subscriber
- satellite link
- receiver
- 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.)
- Granted
Links
- 238000010295 mobile communication Methods 0.000 title description 7
- 239000002131 composite material Substances 0.000 title 1
- 238000004891 communication Methods 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は通信衛星を使用した移動通信複合システムに関
する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mobile communication complex system using communication satellites.
従来の移動通信システムは、複数のサービスが複合した
ものではなかった。例えば、第２図の従来の自動車電話
システムの接続図に示すように、自動車電話システムで
あれば自動車電話だけというように、それぞれのサービ
スごとに単独のシステムとして設けられていた。そして
、それらのサービスを行う交換局１相互間や交換局１と
無線基地局２との間は、通常のケーブルやマイクロ波回
線あるいは光ケーブル等の地上の回線で接続されていた
。Conventional mobile communication systems did not combine multiple services. For example, as shown in the connection diagram of a conventional car phone system in FIG. 2, a car phone system is provided as a separate system for each service, such as a car phone only. The exchanges 1 providing these services and the exchanges 1 and the wireless base stations 2 are connected by terrestrial lines such as ordinary cables, microwave lines, or optical cables.
上述した従来の移動通信システムは、それぞれ単独のシ
ステムとして設けられ、交換局相互間や交換局と無線基
地局との間を地上の回線で接続している。そして、サー
ビスの範囲を拡大するのに複数の交換局を経由する接続
を行っており、移動体の通話を継続させるための手法と
して［交換局間ローミング」等が用いられているが、こ
れを実現するための制御には、接続中の呼の経由する複
数の交換局相互間でデータ回線を用いた複雑な制御を必
要とするという問題点や、自動車電話システムと海事衛
星システムとは、用途別に個別のシステムになっている
ので、呼量が僅かであってもそれぞれのシステムを設備
しなければならないという問題点がある。又、国土の広
さに対し人口が少ない国や小さな島の多い国等では、地
上の回線を設置することが実際上困難であるという問題
点がある。The above-mentioned conventional mobile communication systems are each provided as an independent system, and the switching centers are connected to each other and the switching centers and the wireless base stations are connected by terrestrial lines. In order to expand the range of services, connections are made via multiple exchanges, and inter-exchange roaming is used as a method to continue mobile calls. The control required to achieve this requires complex control using data lines between multiple exchanges through which connected calls pass, and the differences between car telephone systems and maritime satellite systems are limited by their intended use. Since these systems are separate systems, there is a problem in that each system must be installed even if the call volume is small. Furthermore, in countries with a small population relative to the size of the country or countries with many small islands, there is a problem in that it is practically difficult to install terrestrial lines.
本発明の目的は、交換局と無線基地局との間を衛星リン
クで接続することにより、単一の交換局で広範囲のエリ
アをサービスし、さらに単一のシステムで自動車電話シ
ステムや海事衛星システム、さらにルーラル通信システ
ムをもサービスすることを可能とする移動通信複合シス
テムを提供することにある。It is an object of the present invention to connect a switching center and a wireless base station with a satellite link, thereby allowing a single switching center to service a wide area, and furthermore, to provide a single system for a car telephone system or a maritime satellite system. The object of the present invention is to provide a mobile communication complex system that can also provide services for a rural communication system.
本発明の移動通信複合システムは、システム全体を統括
し接続動作を行う機能を持つ交換局と、無線回線で接続
する機能を持つ複数の加入者端末と、前記加入者端末と
前記無線回線を用いて接続する機能を持つ無線基地局と
、前記交換局と前記無線基地局との間を衛星リンクで接
続する機能を持つ通信衛星とを有する構成である。The mobile communication complex system of the present invention includes a switching center that has the function of unifying the entire system and performing connection operations, a plurality of subscriber terminals that have the function of connecting via wireless lines, and a mobile communication system that uses the subscriber terminals and the wireless lines. This configuration includes a wireless base station that has the function of connecting the switching center and the wireless base station, and a communication satellite that has the function of connecting the switching center and the wireless base station using a satellite link.
次に、本発明の実施例について図面を参照して説明する
。Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例の接続図である。FIG. 1 is a connection diagram of an embodiment of the present invention.
交換局１は、交換機１１と衛星リンク２１用の無線送受
信機１２とから構成されている。通信衛星２は、交換局
１と各地に分散して設置されている無線基地局３との間
を衛星リンク２１で接続している。無線基地局３は、衛
星リンク２１用の無線送受信機３１とサービスエリア内
の加入者端末４との間を接続する無線送受信機３２とか
ら成る。The exchange 1 includes an exchange 11 and a radio transceiver 12 for the satellite link 21. The communication satellite 2 connects the switching center 1 and radio base stations 3 which are installed in various locations through a satellite link 21. The radio base station 3 consists of a radio transceiver 31 for the satellite link 21 and a radio transceiver 32 that connects between the subscriber terminals 4 within the service area.
次に動作について説明する。Next, the operation will be explained.
図示されていない交換局１の加入者が、加入者端末４に
通話する場合は、交換機１１から無線送受信機１２と衛
星リンク２１とを経由して通信衛星２に接続し、さらに
衛星リンク２１を経由して無線送受信機３１に接続し、
以後、搬送周波数変換を行って無線送受信機３２から加
入者端末４と接続する。加入者端末４からの発信の場合
にも同様の接続が行われる。このようにすることによっ
て、自動車電話システムであっても、海事衛星システム
であっても、あるいはルーラル通信システムであっても
同一のシステム内に収容し、単一の交換機でサービスを
行うことができる。When a subscriber of an exchange 1 (not shown) makes a call to a subscriber terminal 4, the exchange 11 connects to the communication satellite 2 via a radio transceiver 12 and a satellite link 21, and then connects the satellite link 21 to the communication satellite 2. connected to the wireless transceiver 31 via
Thereafter, carrier frequency conversion is performed to connect the wireless transceiver 32 to the subscriber terminal 4. A similar connection is made in the case of a call from the subscriber terminal 4. In this way, whether it is a car telephone system, a maritime satellite system, or a rural communication system, it is possible to accommodate them within the same system and provide services using a single exchange. .
以上説明したように、本発明は、交換局と無線基地局と
の間を衛星リンクで接続することにより、単一の交換局
で広範囲のエリアをサービスし、さらに単一のシステム
で自動車電話システムや海事衛星システム、さらにルー
ラル通信システムをもサービスすることが可能となると
いう効果が有る。As explained above, the present invention provides services for a wide area with a single switching center by connecting a switching center and a wireless base station with a satellite link, and further provides a car telephone system with a single system. This has the effect of making it possible to provide services for satellites, maritime satellite systems, and even rural communication systems.
り。the law of nature.
Claims (1)
と、無線回線で接続する機能を持つ複数の加入者端末と
、前記加入者端末と前記無線回線を用いて接続する機能
を持つ無線基地局と、前記交換局と前記無線基地局との
間を衛星リンクで接続する機能を持つ通信衛星とを有す
ることを特徴とする移動通信複合システム。A switching center that has the function of supervising the entire system and performing connection operations, a plurality of subscriber terminals that have the function of connecting via a wireless line, and a wireless base station that has the function of connecting the subscriber terminals using the wireless line. and a communication satellite having a function of connecting the switching center and the radio base station via a satellite link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63258533A JPH0761175B2 (en) | 1988-10-14 | 1988-10-14 | Mobile communication complex system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63258533A JPH0761175B2 (en) | 1988-10-14 | 1988-10-14 | Mobile communication complex system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02105733A true JPH02105733A (en) | 1990-04-18 |
| JPH0761175B2 JPH0761175B2 (en) | 1995-06-28 |
Family
ID=17321542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63258533A Expired - Lifetime JPH0761175B2 (en) | 1988-10-14 | 1988-10-14 | Mobile communication complex system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0761175B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62279725A (en) * | 1986-05-28 | 1987-12-04 | Nec Corp | Satellite relay mobile body communication system |
-
1988
- 1988-10-14 JP JP63258533A patent/JPH0761175B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62279725A (en) * | 1986-05-28 | 1987-12-04 | Nec Corp | Satellite relay mobile body communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0761175B2 (en) | 1995-06-28 |
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