JPH03244224A - Radio communication system - Google Patents
Radio communication systemInfo
- Publication number
- JPH03244224A JPH03244224A JP4292390A JP4292390A JPH03244224A JP H03244224 A JPH03244224 A JP H03244224A JP 4292390 A JP4292390 A JP 4292390A JP 4292390 A JP4292390 A JP 4292390A JP H03244224 A JPH03244224 A JP H03244224A
- Authority
- JP
- Japan
- Prior art keywords
- base station
- zones
- communication system
- wireless
- antenna
- 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
- 238000004891 communication Methods 0.000 title claims abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract description 5
- 230000000644 propagated effect Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は自動車電話等の無線通信方式に関し、特にゾー
ンを小さくしたマイクロセルのゾーン構成法をとる無線
通信方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wireless communication system for automobile telephones, etc., and more particularly to a wireless communication system that uses a zone configuration method of microcells with small zones.
従来のセルラ一方式の無線ゾーンは、１つの基地局で１
つの無線ゾーンを構成するオムニゾーン、あるいは、１
つの基地局で３つないしは６つの無線ゾーンを作るセク
ターゾーンが使われている。A traditional cellular one-way wireless zone is one base station with one wireless zone.
Omni-zone, which consists of two wireless zones, or one wireless zone.
Sector zones are used to create three to six radio zones with one base station.
自動車電話のように比較的広い地域を各々の無線ゾーン
でカバーすればよいシステムでは、このようなゾーン構
成も有効である。Such a zone configuration is also effective in a system such as a car phone that only needs to cover a relatively wide area with each wireless zone.
しかしながら、今後は加入者を飛躍的に多く収容するた
めに、ゾーンを従来よりもはるかに小さく、又、ゾーン
を多くする必要かある。However, in the future, in order to accommodate a dramatically larger number of subscribers, it will be necessary to make the zones much smaller or to have more zones than in the past.
例えば、現在の自動車電話で運用される標準的なゾーン
の大きさは直径２〜３ｋｍがら２０〜３Ｏｋ ｍ ＜ら
いまての範囲である。この様ｌソーシ横戒ては、熱論使
用する周波数帯域幅にもよるか、２５ＭＨ２Ｘ２ （＝
５０ＭＨｚ）の周波数帯域で東京首都圏〈半径５０ｋｍ
以内ノて５０万程度の加入者しか収容できない〈６０年
度郵政省電気通信技術審議会「自動車無線電話通信を行
う無線局の無線設備の技術的条件」）。For example, the standard zone size used in current car telephones ranges from 2 to 3 km in diameter to 20 to 30 km. In this way, 25MH2X2 (=
50MHz) frequency band in the Tokyo metropolitan area (50km radius)
It can accommodate only about 500,000 subscribers within this range (FY1960 Ministry of Posts and Telecommunications Telecommunications Technology Council, "Technical Conditions for Radio Equipment for Radio Stations Performing Automobile Radio Telephone Communications").
従って、これ以上の加入者を収容するためには、直径数
１００ｍ程度の極小ゾーン〈マイクロセル）の使用か必
要となる。Therefore, in order to accommodate more subscribers, it is necessary to use an extremely small zone (microcell) with a diameter of several hundred meters.
無線ゾーンを構成するために基地局（の場所、建物）が
必要となるが、この基地局のコストが通信システム全体
のコストに占る割合はかなり大きく、経済的なシステム
を構築するためには基地局のコストを小さく抑えるべき
である。基地局コストを小さくする一つの方法は、基地
局の数を小さくすることである。A base station (location, building) is required to configure a wireless zone, but the cost of this base station accounts for a large proportion of the cost of the entire communication system, so in order to build an economical system, Base station costs should be kept low. One way to reduce base station cost is to reduce the number of base stations.
本発明の目的は、一つの基地局で数多くのゾーンを構成
することができる無線通信方式を提供することにある。An object of the present invention is to provide a wireless communication system that allows one base station to configure many zones.
グ課題を解法するための手段こ
本発明の無線通信方式は、高所に？′！数のア〉テナを
同心円状に配置した複合アンテナを有する基地局を備え
、前記アンテナの指向性力俯角を前記同心円状の配置の
径か異なることに異そらせて前記アンテナのそれぞれに
対応した無線ゾーンを地面に同心円状につくり、これら
無線ゾーン内にある移動無線機と前記基地局との間で通
信を行ζ′う。Is the wireless communication method of the present invention suitable for high places? ′! The radio is equipped with a base station having a composite antenna in which a number of antennas are arranged concentrically, and the directional force depression angle of the antenna is varied depending on the diameter of the concentric arrangement, so that the radio corresponds to each of the antennas. Zones are created concentrically on the ground, and communication is carried out between mobile radios located within these radio zones and the base station.
前記無線シー〉のそれぞれを幅かほぼ等しい円環状にし
てもよい。Each of the radio seams may have a circular ring shape with approximately the same width.
又、前記無線ゾーンのそれぞれを径かほぼ等しいほぼ円
形にしてもよい。Further, each of the wireless zones may be substantially circular with substantially the same diameter.
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例における基地局の複合アンテ
ナの側面図である。FIG. 1 is a side view of a composite antenna of a base station in one embodiment of the present invention.
第１図において、１はアンテナを取りつける台座であり
、２は必要な高さを得るための鉄塔である。３は台座１
に取り′）けたアンテナである。これらのアンテナ３は
同心円状に下向き（地面方向）に取りつけられており、
台座１の中心からの距離によって異なる俯角てとつつけ
られる。In FIG. 1, 1 is a pedestal on which the antenna is attached, and 2 is a steel tower to obtain the required height. 3 is pedestal 1
It is an antenna that can be used for a long time. These antennas 3 are installed concentrically downward (toward the ground).
The angle of depression varies depending on the distance from the center of the pedestal 1.
これらのアンテナ３は指向性のあるもので、それらのビ
ームが、例えば、第２図のように同心円状のもの、ある
いは、第３図のように円形のビームが同心円状に広がっ
ているというものである。These antennas 3 are directional, and their beams are, for example, concentric circles as shown in Figure 2, or circular beams spread concentrically as shown in Figure 3. It is.
第２図において、１１〜１４は１つの基地局でつくるゾ
ーン、２１〜２４は別の１つの基地局でつくるゾーンで
ある。In FIG. 2, 11 to 14 are zones created by one base station, and 21 to 24 are zones created by another base station.
また、第３図において、３１が１つの基地局でつくられ
るゾーン、３２が別の１つの基地局でつくられるゾーン
である。Further, in FIG. 3, 31 is a zone created by one base station, and 32 is a zone created by another base station.
第４図は垂直面で切って見たビームの状態を示す図であ
る。FIG. 4 is a diagram showing the state of the beam when cut along a vertical plane.
Ｌはアンテナの高さ（鉄塔の高さ〉であり、Ｓ！〜Ｓ５
は各々のビームの俯角、ｅ１〜ｅ５（、を各ビームの幅
である。又、Ｄはこれらのビームが地面に投影されたと
きのゾーン幅又は直径である。L is the height of the antenna (height of the steel tower), and S!~S5
is the depression angle of each beam, e1 to e5 (, is the width of each beam, and D is the zone width or diameter when these beams are projected onto the ground.
これらの関係を具体的に示すと、Ｄ−２００ｍ 。A concrete example of these relationships is D-200m.
Ｌ＝２００ｍの場合、ｅ、＝４５．０２＝１８・１°、
ｅ３＝８．１” 、ｅ４＝４．５’ 、０５２．７°と
すればよく、Ｄ ＝ ２００ ｍ 、 Ｌ ＝ ５００
ｍの場合、ｅ、＝２１．８６．ｅ２＝１６．９０３＝１
１．５″’ 、ｅ４＝ ７ ： ８ ’ 、 Ｃ）５
＝５．４°とすれはよい。When L=200m, e,=45.02=18・1°,
e3=8.1'', e4=4.5', 052.7°, D=200 m, L=500
For m, e,=21.86. e2=16.903=1
1.5'', e4=7:8', C)5
= 5.4°, which is good.
これら各無線ゾーン内にある移動無線機と基地局との間
で通信を行なう。Communication is performed between mobile radios located within each of these radio zones and the base station.
以上述べたように本発明は、複数の無線ゾーンを同心円
状６二つくることができる複合アンテナを基地局に用い
ることにより、マイクロセルの無線通信方式を経済的に
構成する手段を与えることができる。As described above, the present invention can provide a means for economically configuring a microcell wireless communication system by using a composite antenna in a base station that can accommodate six concentric multiple wireless zones. .
第１図は本発明の一実施例における基地局の複・合アン
テナの側面図、第２図及び第３図は第１図に示す複合ア
ンテナがつくる無線ゾーンの２つの例のそれぞれを示す
図、
第４図は第１図に示す複
合アンテナの垂直面で切って見たビームの状態を示す図
である。
１ ・・
台座、
２・・・鉄塔、
３・・・アンテナ。FIG. 1 is a side view of a composite antenna of a base station according to an embodiment of the present invention, and FIGS. 2 and 3 are diagrams showing two examples of wireless zones created by the composite antenna shown in FIG. 1. , FIG. 4 is a diagram showing the state of the beam when cut along the vertical plane of the composite antenna shown in FIG. 1. 1... Pedestal, 2... Steel tower, 3... Antenna.
Claims (1)
ンテナを有する基地局を備え、前記アンテナの指向性の
俯角を前記同心円状の配置の径が異なるごとに異ならせ
て前記アンテナのそれぞれに対応した無線ゾーンを地面
に同心円状につくり、これら無線ゾーン内にある移動無
線機と前記基地局との間で通信を行なうことを特徴とす
る無線通信方式。 ２、前記無線ゾーンのそれぞれを幅がほぼ等しい円環状
にしたことを特徴とする請求項１記載の無線通信方式。 ３、前記無線ゾーンのそれぞれを径がほぼ等しいほぼ円
形にしたことを特徴とする請求項１記載の無線通信方式
。[Claims] 1. A base station having a composite antenna in which a plurality of antennas are arranged concentrically at a high place, and the angle of depression of the directivity of the antenna is varied depending on the diameter of the concentric arrangement. A wireless communication system characterized in that wireless zones corresponding to each of the antennas are created concentrically on the ground, and communication is carried out between mobile wireless devices located within these wireless zones and the base station. 2. The wireless communication system according to claim 1, wherein each of the wireless zones has an annular shape with substantially equal width. 3. The wireless communication system according to claim 1, wherein each of the wireless zones has a substantially circular shape with a substantially equal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4292390A JP2917363B2 (en) | 1990-02-22 | 1990-02-22 | Wireless communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4292390A JP2917363B2 (en) | 1990-02-22 | 1990-02-22 | Wireless communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03244224A true JPH03244224A (en) | 1991-10-31 |
| JP2917363B2 JP2917363B2 (en) | 1999-07-12 |
Family
ID=12649543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4292390A Expired - Fee Related JP2917363B2 (en) | 1990-02-22 | 1990-02-22 | Wireless communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2917363B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0531090A2 (en) * | 1991-09-03 | 1993-03-10 | Nippon Telegraph And Telephone Corporation | Cells re-use partition in a mobile communication system |
| US5561842A (en) * | 1992-08-26 | 1996-10-01 | Siemens Aktiengesellschaft | Mobile radio network |
| WO2008041281A1 (en) * | 2006-09-29 | 2008-04-10 | Fujitsu Limited | Base station device and cell configuration method |
-
1990
- 1990-02-22 JP JP4292390A patent/JP2917363B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0531090A2 (en) * | 1991-09-03 | 1993-03-10 | Nippon Telegraph And Telephone Corporation | Cells re-use partition in a mobile communication system |
| US5561842A (en) * | 1992-08-26 | 1996-10-01 | Siemens Aktiengesellschaft | Mobile radio network |
| EP0657074B1 (en) * | 1992-08-26 | 1998-10-21 | Siemens Aktiengesellschaft | Mobile radio network |
| WO2008041281A1 (en) * | 2006-09-29 | 2008-04-10 | Fujitsu Limited | Base station device and cell configuration method |
| US8180355B2 (en) | 2006-09-29 | 2012-05-15 | Fujitsu Limited | Base station device and cell forming method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2917363B2 (en) | 1999-07-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |