JPS6163119A - Base station receiver - Google Patents
Base station receiverInfo
- Publication number
- JPS6163119A JPS6163119A JP59185822A JP18582284A JPS6163119A JP S6163119 A JPS6163119 A JP S6163119A JP 59185822 A JP59185822 A JP 59185822A JP 18582284 A JP18582284 A JP 18582284A JP S6163119 A JPS6163119 A JP S6163119A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- receiver
- reception
- base station
- receivers
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
- H04B7/0817—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection
- H04B7/082—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection selecting best antenna path
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- 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、移動通信またはルーラル通信等に用いる基地
局受信装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a base station receiving device used for mobile communications, rural communications, and the like.
従来例の構成とその問題点
第１図（ム）は従来の移動通信の基地局用受信装置であ
り、無指向アンテナによる六角セルを指向性アンテナで
菱形の３セクターに３分割した、受信機２台による角度
ダンバーシチ受信装置を示す。Conventional configuration and its problems Figure 1 (m) shows a conventional mobile communication base station receiving device, in which a hexagonal cell using an omnidirectional antenna is divided into three rhombic sectors using a directional antenna. A two-unit angular duplex receiver is shown.
従来、基地局では無指性アンテナを使用しており、最も
効率的な無線セル（以下セルという）は六角形であり、
この六角形で通信エリアを埋めている。移動局が自動車
電話機のように移動送信出力と基地送信出力がバランス
するように設計されているものに携帯無線電話機のよう
な低電力の装置の通信を自動車と同様に接続しようとす
る場合は送信電力の差およびアンテナ利得の差により実
効放射電力（ＥＲＰ ）が１０〜１５ｄＢ低いため、基
地受信アンテナを指向性アンテナとして外来雑音による
Ｓ／Ｎ劣化を軽減することが行なわれる。Traditionally, base stations use omnidirectional antennas, and the most efficient radio cells (hereinafter referred to as cells) are hexagonal.
These hexagons fill the communication area. If the mobile station is designed to have a balance between mobile transmission output and base transmission output, such as a car telephone, and is attempting to connect a low-power device such as a mobile radio telephone to a vehicle, the transmission Since the effective radiated power (ERP) is 10 to 15 dB lower due to the power difference and the antenna gain difference, the base reception antenna is made into a directional antenna to reduce S/N deterioration due to external noise.
しかし、指向性アンテナによるＧｌＮ比の改善は１２０
°指向性アンテナでは６〜７ｄＢ 程度であるので、基
地局ダイバーシチ受信により、さらにＳＩＮ改善効果６
〜７４Ｂ を加えて対自動車電話通信と同等の通話品質
が得るようにしている。However, the improvement in GlN ratio by directional antenna is 120
°With a directional antenna, it is about 6 to 7 dB, so base station diversity reception has an additional SIN improvement effect of 6.
~74B is added to obtain call quality equivalent to that of telephone communication to automobiles.
第１図（Ｂ）に示すように従来の１２００指向性アンテ
ナによるセクターの形状は上記六角セルの６個の頂点（
Ｐｉを１つおきに六角形の中心と結ぶ線１こよって六角
セルを菱形のセクターになるようにアンテナの指向性を
設定している。この場合、普通指向性アンテナの指向角
は半値幅（−３ｄＢ ）点で規定されているが、上記の
如く分割した菱形の鋭角部に対して最高利得を持つ必要
がある。従って、アンテナ利得半値幅は１２ｏ０よりも
充分大きくする必要があり、このためアンテナ利得は低
下し、相対的に外来雑音は増加することになる。また角
度ダイバーシチによる改善効果は２基以上のアンテナが
重なる斜線部分で多く得られるものであるから１２０°
度アンテナの正面方向（ト）ではダイバーシチによるＳ
／Ｎ改善効果が得られない欠点がある。As shown in Figure 1(B), the shape of the sector with the conventional 1200 directional antenna is the six vertices (
The directivity of the antenna is set so that the hexagonal cell becomes a rhombic sector by a line 1 connecting every other Pi to the center of the hexagon. In this case, the directivity angle of the directional antenna is usually defined by the half-width (-3 dB) point, but it is necessary to have the highest gain at the acute angle portion of the rhombus divided as described above. Therefore, the antenna gain half-width needs to be sufficiently larger than 12o0, which results in a decrease in antenna gain and a relative increase in external noise. In addition, the improvement effect due to angle diversity is mostly obtained in the shaded area where two or more antennas overlap, so 120°
In the front direction (G) of the antenna, S due to diversity
/N has the disadvantage that no improvement effect can be obtained.
これは、セルを３分割から６分割にしても同様であり、
指向性の中心方向の通信エリアに対するダイバーシチ改
善効果は得難いものである。This is the same even if the cell is divided into 6 parts instead of 3 parts.
It is difficult to obtain a diversity improvement effect for the communication area in the direction of the center of directivity.
発明の目的
本発明は上記従来例の欠点を除去するものであり、角度
およびスペースダイバーシチを併用して確実にＳ／Ｎ改
善効果が得られる基地局受信装置を実現することを目的
とするものである。Purpose of the Invention The present invention eliminates the drawbacks of the above-mentioned conventional example, and aims to realize a base station receiving device that can reliably obtain an S/N improvement effect by using both angle and space diversity. be.
発明の構成
本発明は上記目的を達成するために、六角形の通信エリ
アを３個の偏平な３等辺五角形又は菱形に分割して外来
雑音の影響を軽減させると共に、設置位置の異なる無指
向性アンテナを含めてスペースダイバーシチによる改善
効果を得るものである。Structure of the Invention In order to achieve the above object, the present invention divides a hexagonal communication area into three flat isosceles pentagons or rhombuses to reduce the influence of external noise, and provides omnidirectional communication at different installation positions. This is to obtain the improvement effect of space diversity including the antenna.
実施例の説明
以下に本発明の一実施例の構成について、図面と共に説
明する。DESCRIPTION OF EMBODIMENTS The configuration of an embodiment of the present invention will be described below with reference to the drawings.
第２図において、（Ｂｌ〜ＣＤＩに示７すように六角形
セルの中央に基地局を設け、六角形の無線セルを偏平の
３等辺五角又は菱形の３個のセクターに分割するように
アンテナの開口角が１２０°の指向性アンテナムｌ ム
２ ム３を用いる。ム０ は無指向性アンテナであり、
基地局送信アンテナと共用されている。また、第２図（
Ｃ）に示すようにアンテナ装置高および設置位置が異な
るように設けられている。In Figure 2, a base station is installed in the center of a hexagonal cell as shown in (7) from Bl to CDI, and antennas are installed to divide the hexagonal wireless cell into three flat isosceles pentagonal or rhombic sectors. A directional antenna Ml M2 M3 with an aperture angle of 120° is used. M0 is an omnidirectional antenna,
It is shared with the base station transmitting antenna. Also, Figure 2 (
As shown in C), the antenna devices are provided with different heights and installation positions.
第２図（ム）において、１．２．３は通信用受信機であ
り、Ｎチャネルある基地局の特定の１チヤネルを表した
ものである。また、１１，２１．３１は各受信機の入力
、１２ 、２２ 、３２は各受信機の音声等の出力、１
３ 、２３ 、３３は各受信機の受信レベル信号の出力
である。受信レベル信号は受信入力の大きな部分はほぼ
ｄＢ直線となっており、この出力は受信入力の低い部分
まで直線的であることが望ましい。４は３台の受信機と
３基の指向性アンテナおよび無指向性アンテナ間を自由
な組合せで切替接続ができるアンテナスイッチであり、
その切替は受信モード制御器６によって制御される。５
１ｏＳ１□５Ｉ２Ｓ□３は上記無指向性アンテナムい指
向性アンテナム１ ム２ ム３ を接続するスイッチで
ある。Ａ１Ａ２Ａ３Ａｏ は接続されるアンテナを示
している。５は各受信機の受信レベル（瞬時値）のレベ
ル比較器であり、３台の受信機の内で最高の受信レベル
を示す受信機を決定する。５１゜５２．５３は各受信機
からの入力、６４は最高受信レベルを示す受信機の情報
出力である。６は受信機とアンテナを接続する受信モー
ド制御器であり、６１．６２．６３から与えられた各受
信機の受信レベル（瞬時値）から時間平均値を求めると
共に後述する制御フローに従ってアンテナ切替器４を制
御する。６４は各受信機と各アンテナの切替制御信号出
力である。７はボーティング部であり、７１．７２．７
３は各受信機１．２．３からの受信信号の入力、７４は
レベル比較器６からの受信入力情報の入力、７５はボー
ティング出力であり、自動車電話交換局（ＭＴＳＯ）の
ＨＹＢ回路に接続されている。なお、第１図では基地局
から移動局への通信系統、ＭＴＳＯから受信モード制御
器への制御系統は省略しているが、公衆自動車電話方式
（国内では電々方式、海外ではＡＭＰＳ方式）、その他
ブレストーク通信の基地局送信装置と組合せて使用可能
である。In FIG. 2(m), 1.2.3 is a communication receiver, which represents one specific channel of a base station with N channels. In addition, 11, 21, and 31 are the inputs of each receiver, 12, 22, and 32 are the outputs of audio, etc. of each receiver, and 1
3, 23, and 33 are outputs of reception level signals of each receiver. The reception level signal is approximately linear in dB at a large part of the reception input, and it is desirable that this output is linear up to a low part of the reception input. 4 is an antenna switch that allows switching connections between three receivers, three directional antennas, and omnidirectional antennas in any combination.
The switching is controlled by the reception mode controller 6. 5
1oS1□5I2S□3 is a switch that connects the omnidirectional antenna, the directional antenna, 1, 2, and 3. A1A2A3Ao indicates the antenna to be connected. 5 is a level comparator for the reception level (instantaneous value) of each receiver, which determines the receiver showing the highest reception level among the three receivers. 51, 52, and 53 are inputs from each receiver, and 64 is an information output from the receiver indicating the highest reception level. 6 is a reception mode controller that connects the receiver and antenna, which calculates the time average value from the reception level (instantaneous value) of each receiver given from 61.62.63, and also controls the antenna switch according to the control flow described later. Control 4. 64 is a switching control signal output of each receiver and each antenna. 7 is the boating club, 71.72.7
3 is the input of the received signal from each receiver 1.2.3, 74 is the input of the received input information from the level comparator 6, and 75 is the voting output, which is connected to the HYB circuit of the mobile telephone exchange office (MTSO). It is connected. Although the communication system from the base station to the mobile station and the control system from the MTSO to the reception mode controller are omitted in Figure 1, the communication system from the base station to the mobile station and the control system from the MTSO to the reception mode controller are omitted, but the communication system from the base station to the mobile station and the control system from the MTSO to the reception mode controller are not shown. It can be used in combination with a base station transmitter for BreathTalk communication.
次に、上記実施例の動作について第３図のフローチャー
トと共に説明する。Next, the operation of the above embodiment will be explained with reference to the flowchart of FIG.
待受状態において、３台の受信機１．２，３゜はそれぞ
れ指向性アンテナ人１ 人２ Ａ３ に接続するよう
にアンテナスイッチ４を制御する。上記指向性アンテナ
人ｌ ”２ ム３から離れた場所に一段高い位置に無
指向性アンテナＡｏ が設けられている。このアンテナ
は送受共用アンテナであり、基地局と移動局の送信電力
を放射する無指向性アンテナである。In the standby state, the three receivers 1, 2 and 3 degrees each control the antenna switch 4 so as to be connected to the directional antenna person 2A3. An omnidirectional antenna Ao is installed at a higher position away from the directional antenna person 3. This antenna is a shared antenna for transmitting and receiving, and radiates the transmission power of the base station and mobile station. It is an omnidirectional antenna.
各受信機はあらかじめチャネル指定されているが、隣接
セルから監視を依頼された場合は自動車交換局（ＭＴＳ
Ｏ）から監視するチャネルを指定して割込みが行なわれ
る。上記チャネル指定信号をモード制御器で受信し、各
受信機の局発周波数を指定チャネルに切替させる。Each receiver has a channel specified in advance, but when requested to monitor from an adjacent cell, the mobile switching center (MTS)
An interrupt is made by specifying the channel to be monitored from (O). The mode controller receives the channel designation signal and switches the local frequency of each receiver to the designated channel.
第３図のフローチャートを基に説明すると、ステップ１
で入力有かどうかを調べ、入力を検知したときＹＥＳ
とする。次にステップ２で３方向の入力レベルを測定
する。ステップ３ては入力がスレシホールド以上か否か
を判定し、以上のときＹＥＳとする。Ｎｏの場合はステ
ップ２に戻って３方向の受信を続ける。ＹＥＳのときは
ステップ４に進み１方向か否かが判定される。ＮＯのと
きはステップ６に進み、最高受信入力のアンテナと次に
高いアンテナが選定され、これに無指向アンテナ、計３
基のアンテナに上記３台の通話用受信機を接続する。Ｙ
ＥＳの場合はステップ６に進み入力のあったアンテナと
無人力のアンテナ２基の内の１基、および無指向性アン
テナ人。とに３台の受信機を接続する。次にステップ７
に進み、無人力アンテナが有るか無いかが判定される。To explain based on the flowchart in Figure 3, step 1
Check to see if there is an input, and if input is detected, YES
shall be. Next, in step 2, input levels in three directions are measured. In step 3, it is determined whether the input is greater than or equal to the threshold, and if so, the answer is YES. If No, return to step 2 and continue receiving in three directions. If YES, the process proceeds to step 4, where it is determined whether the direction is one direction or not. If NO, proceed to step 6, where the antenna with the highest reception input and the next highest antenna are selected, plus the omnidirectional antenna, for a total of 3 antennas.
Connect the above three call receivers to the base antenna. Y
In the case of ES, proceed to step 6 and use the input antenna, one of the two unmanned antennas, and the omnidirectional antenna. Connect three receivers to. Next step 7
Then, it is determined whether there is an unmanned antenna.
Ｎ。N.
の場合はステップ８に進み最高入力アンテナの変化を監
視し、変らないときＮｏとする。ステップ７．８がＹＩ
Ｃ５のとき、ステップ９は１秒タイマーを進めるべきか
否かを決定する。ステップ１０ではｔ秒経過したか否か
が判定される。ＹＥＳの場合はステップ１１にて１秒タ
イマーをクリアし、ステップ１２で受信入力か最低の受
信機で使用中のアンテナ以外のアンテナの入力を測定す
る。ステップ１３では前のレベルより高いか否かが判定
される。判定結果がＮＯの場合はステップ７へ戻し、再
度測定結果を判定してこのループを繰返し実行する。ス
テップ１３で測定以前よりも高いアンテナが存在した場
合はステップ４の判定に戻し、最初のループを繰返し実
行させる。上記動作により少なくとも２台の通話受信機
をアンテナム１ム２ム３ と人。に接続してダイバーシ
チ受信を行なうのである。In the case of , proceed to step 8 and monitor the change in the highest input antenna, and if there is no change, take No. Step 7.8 is YI
At C5, step 9 determines whether to advance the 1 second timer. In step 10, it is determined whether t seconds have elapsed. If YES, the 1-second timer is cleared in step 11, and in step 12, the receiving input or the input of an antenna other than the antenna in use by the lowest receiver is measured. In step 13, it is determined whether the current level is higher than the previous level. If the determination result is NO, the process returns to step 7, the measurement result is determined again, and this loop is repeatedly executed. In step 13, if there is an antenna higher than before the measurement, the process returns to step 4 and the first loop is repeated. The above operation connects at least two call receivers to antennas 1, 2, and 3. to perform diversity reception.
発明の効果
本発明は上記のような構成であり、以下に示す効果が得
られるものである。すなわち、無指向性アンテナは従来
から基地局送信に用いられていたものであり、送受共用
装置にアンテナ共用することによって、角度ダイバーシ
チ受信と無指向性アンテナとのスペースダイバーシチ受
信を実施して、通話品質の改善を経済的に実施できる利
点がある。Effects of the Invention The present invention has the above-described configuration, and provides the following effects. In other words, omnidirectional antennas have traditionally been used for base station transmission, and by sharing the antenna with a shared transmitter/receiver device, angle diversity reception and space diversity reception with the omnidirectional antenna can be performed, allowing communication. It has the advantage of being able to economically improve quality.
第１図（Ａ） 、 （Ｂ）は従来の基地局受信装置のブ
ロック図及び無線セルの構成を示す図、第２図体）〜（
Ｄｌは本発明の基地局受信装置の一実施例のブロック図
及び無線セルの構成を示す図、第３図はアンテナ切替え
のフローチャート図である。
ム１ ム２ ム３・・・・・・指向性アンテナ、人。
・・・・・・無指向性アンテナ、１．２．３・・・・・
・通話受信機、４・・・・・・アンテナスイッチ、５・
・・・・・受信レベル比較器、６・・・・・受信モード
制御器、γ・・・・・・ボーティング部。FIGS. 1(A) and 1(B) are block diagrams of a conventional base station receiving device and diagrams showing the configuration of a wireless cell;
Dl is a block diagram of an embodiment of the base station receiving device of the present invention and a diagram showing the configuration of a wireless cell, and FIG. 3 is a flowchart of antenna switching. M1 M2 M3...Directional antenna, person.
・・・・・・Omnidirectional antenna, 1.2.3・・・・・・
・Call receiver, 4...Antenna switch, 5・
... Reception level comparator, 6 ... Reception mode controller, γ ... Voting section.
Claims (1)
またはルーラル通信の基地局において用いられ、通信エ
リアの全域をサービスエリアとする無指向アンテナと通
信エリアを３個以上の扇形エリアに分割する分割数と同
数の指向性アンテナを互いに干渉を生じないように配置
し、かつ上記のアンテナと３台組の同一チャネルの無線
受信機の待受け時に上記無線受信機を上記指向性アンテ
ナに接続すると共に、その受信レベル情報の結果に基い
て上記３台の無線受信機を指向性アンテナおよび無指向
性アンテナに接続するアンテナスイッチおよび切替制御
部と、上記３台の無線受信機の受信レベル情報に基いて
上記３台の無線受信機の復調信号の１つを選択して出力
するボーティング回路とを備えてなる基地局受信装置。Omnidirectional antennas are used in base stations for mobile communications or rural communications that have a communication range, as represented by omnidirectional antennas, which serve the entire communication area as a service area, and divisions that divide the communication area into three or more fan-shaped areas. directional antennas of the same number as the number of directional antennas are arranged so as not to cause interference with each other, and when the antenna and a set of three radio receivers of the same channel are on standby, the radio receiver is connected to the directional antenna, An antenna switch and a switching control unit that connects the three radio receivers to the directional antenna and the omnidirectional antenna based on the result of the reception level information; A base station receiving device comprising: a voting circuit that selects and outputs one of the demodulated signals of the three radio receivers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59185822A JPH0618335B2 (en) | 1984-09-05 | 1984-09-05 | Base station receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59185822A JPH0618335B2 (en) | 1984-09-05 | 1984-09-05 | Base station receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6163119A true JPS6163119A (en) | 1986-04-01 |
| JPH0618335B2 JPH0618335B2 (en) | 1994-03-09 |
Family
ID=16177481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59185822A Expired - Lifetime JPH0618335B2 (en) | 1984-09-05 | 1984-09-05 | Base station receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0618335B2 (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 |
| JP4649054B2 (en) * | 2001-04-24 | 2011-03-09 | 京セラ株式会社 | transceiver |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5972831A (en) * | 1982-10-20 | 1984-04-24 | Hitachi Ltd | Diversity receiving system |
-
1984
- 1984-09-05 JP JP59185822A patent/JPH0618335B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5972831A (en) * | 1982-10-20 | 1984-04-24 | Hitachi Ltd | Diversity receiving system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6339703B1 (en) | 1997-06-26 | 2002-01-15 | Nec Corporation | Diversity reception system |
| JP4649054B2 (en) * | 2001-04-24 | 2011-03-09 | 京セラ株式会社 | transceiver |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0618335B2 (en) | 1994-03-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |