JPH0393326A - Reception antenna system for plural zones - Google Patents
Reception antenna system for plural zonesInfo
- Publication number
- JPH0393326A JPH0393326A JP1230821A JP23082189A JPH0393326A JP H0393326 A JPH0393326 A JP H0393326A JP 1230821 A JP1230821 A JP 1230821A JP 23082189 A JP23082189 A JP 23082189A JP H0393326 A JPH0393326 A JP H0393326A
- Authority
- JP
- Japan
- Prior art keywords
- reception
- antenna
- base station
- wave
- zone
- 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
Links
- 238000004891 communication Methods 0.000 claims abstract description 19
- 230000006866 deterioration Effects 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 238000010295 mobile communication Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、移動通信システムにおける複数ゾーンの受信
アンテナ方式に関し、特に無線自動車電話における基地
局がスペースダイバシティ受信方式を採用している場合
に、基地局受信アンテナの数を削減する複数ゾーンの受
信アンテナ方式に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a multi-zone receiving antenna system in a mobile communication system, and particularly when a base station in a wireless mobile telephone employs a space diversity reception system. The present invention relates to a multi-zone receiving antenna system that reduces the number of base station receiving antennas.
従来、この種の複数ゾーンの受信アンテナ方式は、例え
ば第５図の説明図に示すように、無線自動車電話の基地
局３３が周辺地域を６ゾーン、すなわち、第ｌセクタ２
１から第６セクタ２６までに分けて受信し、かつ、各セ
クタごとに、例えば、第ｌセクタではアンテナ２７Ａ，
２７Ｂから各セクタ同様の方式で、第６セクタではアン
テナ３２Ａ，３２Ｂの各２本のアンテナを用意する。こ
こでアンテナ２７Ａ，２７Ｂのうちの１本はスペースダ
イバーシティ受信用のアンテナである。したがって６セ
クタ方式では１２本の受信アンテナが必要であった。Conventionally, in this type of multi-zone receiving antenna system, for example, as shown in the explanatory diagram of FIG.
The reception is divided into sectors 1 to 6, and for each sector, for example, in the l-th sector, the antenna 27A,
In the same manner as in each sector from 27B onwards, two antennas each, antennas 32A and 32B, are prepared in the sixth sector. Here, one of the antennas 27A and 27B is an antenna for space diversity reception. Therefore, 12 receiving antennas were required in the 6-sector system.
上述した従来の複数ゾーンの受信アンテナ方式は、受信
領域を基地局を中心として例えば６セクタに分け、かつ
スペースダイバーシティ受信を行う場合には、受信アン
テナが１２本必要となる。In the conventional multi-zone receiving antenna system described above, when the receiving area is divided into, for example, six sectors with the base station at the center, and space diversity reception is performed, 12 receiving antennas are required.
さらに送信アンテナが各セクタごとに１本必要となるの
で、合計１８本のアンテナを基地局に取り付けなければ
ならない。したがって基地局におけるアンテナの取り付
け場所の確保が非常に困難となる欠点がある。Furthermore, one transmitting antenna is required for each sector, so a total of 18 antennas must be attached to the base station. Therefore, there is a drawback that it is very difficult to secure a place to install the antenna at the base station.
本発明の複数ゾーンの受信アンテナ方式は、無線通信基
地局を中心としてＮ （Ｎは整数）個の通信ゾーンが配
置され、この各通信ゾーンの移動局と前記基地局とがス
ペースダイバーシティ受信を行う複数ゾーンの受信アン
テナ方式において、前記基地局がＮ｛［の受信アンテナ
を有し、前記受信アンテナのそれぞれが自己の通信ゾー
ンの電波と隣接の通信ゾーンの電波とを受信し、この二
つの電波の一つを隣接の通信ゾーンの電波信号として隣
接通信ゾーンの受信装置に分配している。In the multi-zone receiving antenna system of the present invention, N (N is an integer) communication zones are arranged around a wireless communication base station, and mobile stations in each communication zone and the base station perform space diversity reception. In a multi-zone receiving antenna system, the base station has N{[ receiving antennas, each of which receives radio waves from its own communication zone and radio waves from an adjacent communication zone, and receives these two radio waves. One of them is distributed as a radio wave signal of the adjacent communication zone to the receiving device of the adjacent communication zone.
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の複数セクタに対する受信ア
ゾテナの配置を示す構成図、第２図は前述の６セクタの
各受信アンテナが主受信信号とダイバーシティ受信信号
とを受信し、この２波を分配して、いずれか良品質の受
信波を選択する受信装置の受信システムの構戒図を示し
ている。FIG. 1 is a block diagram showing the arrangement of reception antennas for multiple sectors according to an embodiment of the present invention, and FIG. This figure shows a configuration diagram of a receiving system of a receiving device that distributes waves and selects one of the received waves of good quality.
まず、第１図において、第１〜第６セクタの受信領域の
境界近くに各受信領域に対応する受信用のアンテナ１〜
６が配置されている。例えば、第１セクタの受信信号は
アンテナ１の主受信波とアンテナ２のダイバーシティ受
信波の２つを第１セクタの受信波として受けてＳ／Ｎの
良い方を選択する。以降順次、第２セクタはアンテナ２
とアンテナ３の各受信波を受ける。最終的に第６セクタ
はアンテナ６で主受信波を受信し、アンテナ１でダイバ
ーシティ受信波を受けて、Ｓ／Ｎの良い方を選択する。First, in FIG. 1, reception antennas 1 to 1 corresponding to each reception area are located near the boundaries of the reception areas of the first to sixth sectors.
6 is placed. For example, the received signal of the first sector receives the main received wave of antenna 1 and the diversity received wave of antenna 2 as received waves of the first sector, and selects the one with a better S/N. From then on, the second sector is antenna 2.
and receives each received wave from antenna 3. Finally, the sixth sector receives the main reception wave with antenna 6, receives the diversity reception wave with antenna 1, and selects the one with better S/N.
次に、このような受信アンテナシステムに対応する受信
装置のシステムを第２図により説明する。Next, a receiving apparatus system corresponding to such a receiving antenna system will be explained with reference to FIG. 2.
アンテナ１の受信波は図に示す後続の２分配器（以下２
Ｄ Ｉ Ｖという）ＩＢによるレベル低下によりＳ／
Ｎが劣化するのを補償するために、低雑音増幅器（図で
ＬＮ ＡＭＰ）ＩＡで増幅した後に、２ＤＩＶ−ＩＢ
で主受信波と隣接の第６セクタ用のダイバーシティ受信
波とに２分配する。この２ＤＩＶ−ＩＢの主受信波と隣
接の第２アンテナで受けたダイバーシティ受信波とを受
信復調器１１ＣとＩＩＤとで復調し、良いＳ／Ｎを選択
して各通話チャネルに接続される。前述と同様の動作が
、ほかの第２〜第６セクタにおいても行われる。The received wave of antenna 1 is transmitted to the subsequent two-way divider (hereinafter referred to as 2) shown in the figure.
Due to a decrease in the level due to IB (called DIV),
In order to compensate for the deterioration of N, after amplification with a low noise amplifier (LN AMP in the figure) IA, 2DIV-IB
The signal is divided into two parts: the main received wave and the diversity received wave for the adjacent sixth sector. The 2DIV-IB main reception wave and the diversity reception wave received by the adjacent second antenna are demodulated by the reception demodulator 11C and IID, and a good S/N is selected and connected to each communication channel. The same operation as described above is also performed in the other second to sixth sectors.
次にこのような６セクタを６個の受信アンテナでカバー
する場合のアンテナの水平面内の利得パタンの特性を第
３図の特性図により説明する。第３図において、実線の
利得パタンは利得の半値幅（３ｄＢダウン幅）が６０’
の場合の特性を示し、点線の利得パタンは等電界線の特
性を示した利得バタンである。図のように等電界線のバ
タンは１２０゜の範囲をカバーしている。今、第ｌセク
タおよび第２セクタのアンテナ利得パタンのカバー範囲
を第４図の特性図に示す。すなわち、アンテナｌの等電
界線のバタン（一点鎖線）とアンテナ２の等電界線バタ
ン（点線）とは、第１セクタにおいて重複して受信領域
をカバーしている。Next, the characteristics of the gain pattern in the horizontal plane of the antenna when six sectors are covered by six receiving antennas will be explained with reference to the characteristic diagram of FIG. In Figure 3, the solid line gain pattern has a gain half width (3dB down width) of 60'.
The dotted line gain pattern is a gain pattern showing the characteristic of constant electric field lines. As shown in the figure, the contours of the isoelectric field lines cover a range of 120°. Now, the coverage range of the antenna gain patterns of the l-th sector and the second sector is shown in the characteristic diagram of FIG. That is, the isoelectric field lines of the antenna l (dotted chain line) and the isoelectric field lines of the antenna 2 (dotted lines) overlap in the first sector and cover the reception area.
したがってアンテナ１を主受信波として受信した場合に
は、アンテナ２はダイバーシティ受信波として動作させ
ることが可能である。Therefore, when antenna 1 receives the main reception wave, antenna 2 can operate as the diversity reception wave.
なお、基地局に設置する送信アンテナの指向方向は受信
アンテナの指向方向から３０゜ずれたそれぞれのセクタ
領域の中心に向かって電波を放射する。Note that the directional direction of the transmitting antenna installed at the base station radiates radio waves toward the center of each sector area, which is shifted by 30 degrees from the directional direction of the receiving antenna.
以上説明したように本発明は、基地局が周辺地域を６セ
クタ一方式で受信し、かつ、受信機がスペースダイバシ
ティ受信を行っている移動通信システムにおいて、６０
゜おきに配置した６本の受信アンテナの受信波を低雑音
増幅器にてそれぞれ増幅した後に２分割し、その一方を
隣接するセクターのスペースダイバシティー受信用とし
ても使用することにより、従来、６セクタ方式の場合に
１２本必要であった受信アンテナをへらして６本で構或
することができる効果がある。As explained above, the present invention is applicable to a mobile communication system in which a base station receives signals from surrounding areas in six sectors, and a receiver performs space diversity reception.
Conventionally, by amplifying the received waves of six receiving antennas arranged at 6° intervals using low-noise amplifiers, and then dividing them into two, and using one half for space diversity reception of the adjacent sector, the six-sector This method has the advantage of reducing the number of receiving antennas required from 12 to 6.
第１図は本発明の一実施例の構戒図、第２図は本実施例
の受信システムの構成図、第３図および第４図は本実施
例のアンテナの特性図、第５図は従来の複数ゾーンの受
信アンテナ方式の説明図である。
１〜６・・・・・・アンテナ、ＩＡ〜６Ａ・・・・・・
低雑音増幅器（ＬＮ ＡＭＰ）、１Ｂ〜６Ｂ・・・・
・・２分配器（２−ＤＩＶ）、ＩＩＣ〜１６Ｃ・・・・
・・受信復調器、１ｌＤ〜１６Ｄ・・・・・・受信復調
器、２１〜２６・・・・・・第１セクタ〜第６セクタ、
２７Ａ〜３２Ａ，２７〜３２Ｂ・・・・・・アンテナ。Figure 1 is a configuration diagram of an embodiment of the present invention, Figure 2 is a configuration diagram of a receiving system of this embodiment, Figures 3 and 4 are characteristic diagrams of the antenna of this embodiment, and Figure 5 is FIG. 2 is an explanatory diagram of a conventional multi-zone receiving antenna system. 1-6...Antenna, IA-6A...
Low noise amplifier (LN AMP), 1B to 6B...
・・2 divider (2-DIV), IIC~16C・・・・
...Reception demodulator, 11D to 16D...Reception demodulator, 21 to 26...First sector to sixth sector,
27A to 32A, 27 to 32B... Antenna.
Claims (1)
ゾーンが配置され、この各通信ゾーンの移動局と前記基
地局とがスペースダイバーシティ受信を行う複数ゾーン
の受信アンテナ方式において、前記基地局がＮ個の受信
アンテナを有し、前記受信アンテナのそれぞれが自己の
通信ゾーンの電波と隣接の通信ゾーンの電波とを受信し
、この二つの電波の一つを隣接の通信ゾーンの電波信号
として隣接通信ゾーンの受信装置に分配することを特徴
とする複数ゾーンの受信アンテナ方式。In a multi-zone receiving antenna system in which N (N is an integer) communication zones are arranged around a wireless communication base station, and mobile stations in each communication zone and the base station perform space diversity reception, the base station has N receiving antennas, each of the receiving antennas receives radio waves of its own communication zone and radio waves of an adjacent communication zone, and one of these two radio waves is used as a radio wave signal of the adjacent communication zone. A multi-zone receiving antenna system characterized by distribution to receiving devices in adjacent communication zones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1230821A JPH0393326A (en) | 1989-09-05 | 1989-09-05 | Reception antenna system for plural zones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1230821A JPH0393326A (en) | 1989-09-05 | 1989-09-05 | Reception antenna system for plural zones |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0393326A true JPH0393326A (en) | 1991-04-18 |
Family
ID=16913811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1230821A Pending JPH0393326A (en) | 1989-09-05 | 1989-09-05 | Reception antenna system for plural zones |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0393326A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6339703B1 (en) | 1997-06-26 | 2002-01-15 | Nec Corporation | Diversity reception system |
| US7653149B2 (en) | 1994-02-14 | 2010-01-26 | Qualcomm Incorporated | Dynamic sectorization in a spread spectrum communication system |
-
1989
- 1989-09-05 JP JP1230821A patent/JPH0393326A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7653149B2 (en) | 1994-02-14 | 2010-01-26 | Qualcomm Incorporated | Dynamic sectorization in a spread spectrum communication system |
| US6339703B1 (en) | 1997-06-26 | 2002-01-15 | Nec Corporation | Diversity reception system |
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