JPS6365247B2 - - Google Patents
Info
- Publication number
- JPS6365247B2 JPS6365247B2 JP57044897A JP4489782A JPS6365247B2 JP S6365247 B2 JPS6365247 B2 JP S6365247B2 JP 57044897 A JP57044897 A JP 57044897A JP 4489782 A JP4489782 A JP 4489782A JP S6365247 B2 JPS6365247 B2 JP S6365247B2
- Authority
- JP
- Japan
- Prior art keywords
- base station
- station
- transmission power
- mobile station
- 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.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 claims description 49
- 238000000034 method Methods 0.000 claims description 7
- 230000005684 electric field Effects 0.000 description 30
- 238000001514 detection method Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 9
- 230000010355 oscillation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008571 general function Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/06—Hybrid resource partitioning, e.g. channel borrowing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Description
【発明の詳細な説明】
〔発明の属する技術分野〕
本発明は蜂単状にサービスエリアを配置した公
衆自動車電話方式などに用いられる移動無線通信
方式に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] The present invention relates to a mobile radio communication system used in a public automobile telephone system, etc., in which service areas are arranged in a honeycomb shape.
従来、移動局が自らの所在するサービスエリア
を識別して該当する基地局と通信を行う公衆自動
車電話方式では、基地局と移動局とが接続し通信
を取扱う範囲、すなわちサービスエリアの広さを
限定する基地局および移動局の送信電力はある値
に設定されていて、各基地局の設備容量は受持ち
サービスエリア内における見込みの呼量により一
定の接続率が得られるように設計されている。こ
のため次のような欠点が生じていた。すなわち
その１は、最大容量までの呼量を扱つていれ
ば、隣接サービスエリアより流入する通信継続中
の移動局を追跡切替できないこと、
その２は、最大容量以上の発着信呼はすべて不
接続となること、
その３は、設計した呼量と実態との差は、その
まま基地局における一方の設備不足、他方の設備
過剰となり、それを克服するための融通性がない
こと
などである。
Conventionally, in the public car telephone system in which a mobile station identifies the service area in which it is located and communicates with the corresponding base station, the range in which the base station and mobile station connect and handle communication, that is, the width of the service area, is The transmission power of the limiting base station and mobile station is set to a certain value, and the installed capacity of each base station is designed so that a certain connection rate can be obtained depending on the expected call volume within the assigned service area. This resulted in the following drawbacks. The first is that if the call volume is up to the maximum capacity, it is not possible to track and switch mobile stations that are in continuous communication flowing in from adjacent service areas, and the second is that all calls made or received above the maximum capacity are rejected. The third problem is that the difference between the designed traffic volume and the actual situation will result in a lack of equipment on one side and an excess of equipment on the other at the base station, and there is no flexibility to overcome this.
本発明の目的は隣接した基地局の設備に融通性
を持たせ、前記の問題点を解決して接続率および
設備の利用率の高い移動無線通信方式を提供する
ことである。
An object of the present invention is to provide a mobile radio communication system that provides flexibility in the equipment of adjacent base stations, solves the above-mentioned problems, and has a high connection rate and equipment utilization rate.
本発明は、定められた基準によつて分割された
相互に隣接する複数のサービスエリアと、これら
のサービスエリアを個々に受持つ複数の基地局
と、これら基地局を制御する制御局とから構成さ
れ、上記の各基地局に到達する移動局送信電波の
電力が、所定の判断基準を満たす基地局に対して
上記の移動局が通信を行えるようにした通信方式
において、前記制御局に各基地局の使用率を検出
する手段と、その一つの基地局の使用率が設定値
を超え、かつその一つの基地局に隣接する他の基
地局の通信回線に空きチヤンネルがあるときに、
前記制御局より上記一つの基地局と通信を行つて
いる各移動局の送信電力を、変更した値に設定す
るための送信電力の制御信号を前記の一つの基地
局を介して送出する手段とを設け、これにより前
記送信電力を変化させた移動局との通信を行う基
地局を変更させることにより、その一つの基地局
のサービスエリアを変化させて、前記システム全
体としての接続率を高くするために、前記送信電
力の制御信号受信に応動する送信電力変更手段
を、前記各移動局に備えたことを特徴とする。
The present invention consists of a plurality of mutually adjacent service areas divided according to predetermined criteria, a plurality of base stations that individually take charge of these service areas, and a control station that controls these base stations. In a communication system in which the power of mobile station transmission radio waves reaching each of the above base stations is such that the above mobile station can communicate with the base station that satisfies predetermined criteria, the control station means for detecting the usage rate of a station, and when the usage rate of one base station exceeds a set value and there is an empty channel in the communication line of another base station adjacent to the one base station,
means for transmitting, via the one base station, a transmission power control signal for setting the transmission power of each mobile station communicating with the one base station to a changed value from the control station; By changing the base station that communicates with the mobile station whose transmission power has been changed, the service area of that one base station is changed, and the connection rate of the system as a whole is increased. In order to achieve this, each of the mobile stations is provided with a transmission power changing means that responds to reception of the transmission power control signal.
第１図は移動局送信電力の変更でサービスエリ
アの変更ができることを示す本発明による通信方
式の一実施例の配置概要を示す図である。第１図
において、１，２および３は基地局、４，５およ
び６は基地局の標準サービスエリア、７は自動車
などの移動局、８は移動局送信電波が基地局の所
定の判断基準を満たす標準サービスエリア、９は
移動局送信電力を変更した場合の基地局の所定の
判断基準を満たす拡大されたエリア、１０は移動
局７の移動径路、１１は基地局標準サービスエリ
ア５の境界線、３０は制御局をそれぞれ示してい
る。
FIG. 1 is a diagram showing an outline of the layout of an embodiment of the communication system according to the present invention, showing that the service area can be changed by changing the mobile station transmission power. In Fig. 1, 1, 2, and 3 are base stations, 4, 5, and 6 are standard service areas of base stations, 7 is a mobile station such as a car, and 8 is a mobile station whose transmitted radio waves meet the base station's predetermined criteria. 9 is an expanded area that satisfies the base station's predetermined judgment criteria when changing the mobile station transmission power, 10 is the movement route of the mobile station 7, and 11 is the boundary of the base station standard service area 5. , 30 indicate control stations, respectively.
第２図はサービスエリアにおける移動局位置と
基地局入力電界の関係を示す図である。 FIG. 2 is a diagram showing the relationship between the mobile station position in the service area and the base station input electric field.
第２図において、１２は基地局入力電界におけ
る移動局送信電波電力の判断基準、１３は移動局
７が第１図の位置に所在したときにおいて標準送
信電力を送出した場合の電界強度、１４は移動局
において送信電力を増加した場合の電界強度、１
５〜２３は第１図における移動局７の位置を１８
とするほか、サービスエリア各部の位置を示し、
２４および２６は基地局２における入力電界強
度、２５および２７は基地局１における受信入力
電界強度を示す。 In FIG. 2, reference numeral 12 indicates the criterion for determining the mobile station transmission radio wave power in the base station input electric field, 13 indicates the electric field strength when the mobile station 7 is located at the position shown in FIG. Electric field strength when increasing transmission power at mobile station, 1
5 to 23 indicate the position of the mobile station 7 in FIG.
In addition to indicating the location of each part of the service area,
24 and 26 indicate the input electric field strength at the base station 2, and 25 and 27 indicate the received input electric field strength at the base station 1.
以下第１図および第２図を併用して方式の全般
的な動作を説明する。 The general operation of the system will be explained below with reference to FIGS. 1 and 2.
第１図に示す基地局標準サービスエリア４〜６
はこの通信方式を構成するサービスエリア群の一
部であり、移動径路１０を移動し標準送信電力を
送出する第１図の位置（第２図１８）に所在する
移動局から基地局１〜３に到達する送信波の電界
強度は第２図の１３となる。本実施例においては
各基地局１〜３は各々発信用無線チヤンネル例え
ばa1，a1，a3および着信用電線チヤンネルｂを同
一周波数で有して、移動局７が使用されていない
場合はこの移動局７は上記着信用無線チヤンネル
ｂで待機して、各移動局の標準の時の送信電力は
同じとする。 Base station standard service areas 4 to 6 shown in Figure 1
is a part of the service area group that constitutes this communication system, and is a mobile station located at the position shown in FIG. The electric field strength of the transmitted wave reaching the point is 13 in FIG. In this embodiment, each of the base stations 1 to 3 has an outgoing wireless channel, e.g., a 1 , a 1 , a 3 , and an incoming wire channel b at the same frequency, and when the mobile station 7 is not in use, It is assumed that this mobile station 7 waits on the incoming radio channel b, and the standard transmission power of each mobile station is the same.
制御局３０は常に各基地局の回線の使用率を検
出していて、ある基地局の回線の使用率すなわち
呼量が設計値を超え、かつ隣接した基地局の回線
に余裕があることを知ると、基地局を通じて基地
局の標準サービスエリア内に所在する移動局に送
信電力制御信号を送出し、移動局の送信電力を制
御する機能（この場合は引き上げ）を持たせてあ
る。 The control station 30 constantly detects the usage rate of the line of each base station, and learns that the usage rate of a certain base station's line, that is, the call volume, exceeds the design value, and that there is margin in the line of an adjacent base station. The base station also has the function of transmitting a transmission power control signal to mobile stations located within the standard service area of the base station to control (in this case increase) the transmission power of the mobile station.
次に標準の時の動作を説明する。基地局１〜３
は現在通話に使用していないチヤンンネル（以下
空きチヤンネルと称する。）があるとする。移動
局７で発着呼が発生すると、移動局７は各基地局
の発信用無線チヤンネルを使用する動作に入つた
時前記a1，a2，a3チヤンネルを順次送信するが、
所在する位置が移動局位置（第２図の１８）であ
ることから、その電界強度は第２図の電界強度１
３で、基地局２に対しては入力電界２６であり判
断基準１２を満たしている。しかし、基地局１で
は入力電界第２図の２７、基地局３では位置２３
で入力電界は非常に低く、判断基準１２は満たし
ていない。このため、制御局３０は基地局２の発
信用無線チヤンネルa2が判断基準１２を満たして
いることから移動局が基地局２の標準サービスエ
リア５内に所在すると判断し、基地局２は所定の
手順で自局の持つ空チヤンネルの内の１つを移動
局７に割当て接続動作を行う。 Next, the standard operation will be explained. Base stations 1-3
Assume that there is a channel (hereinafter referred to as an empty channel) that is not currently being used for calls. When a call is made or received at the mobile station 7, the mobile station 7 sequentially transmits the a 1 , a 2 , and a 3 channels when it starts using the outgoing radio channels of each base station.
Since the location is the mobile station position (18 in Figure 2), the electric field strength is 1 in Figure 2.
3, the input electric field to the base station 2 is 26, which satisfies the criterion 12. However, at base station 1, the input electric field is 27 in Figure 2, and at base station 3, it is at position 23.
The input electric field is very low, and criterion 12 is not met. Therefore, the control station 30 determines that the mobile station is located within the standard service area 5 of the base station 2 since the outgoing wireless channel a 2 of the base station 2 satisfies the criterion 12, and the base station 2 According to the procedure, one of the empty channels of the own station is assigned to the mobile station 7 and a connection operation is performed.
次に標準サービスエリア５に設計値を超えた呼
量が集中したが、隣接のサービスエリアには余裕
があるので制御局３０から基地局を通じて移動局
７の送信電力を引き上げた場合について説明す
る。移動径路１０上の移動局７は発信用無線チヤ
ンネルを使用する動作に入つた時、前記a1，a2，
a3と順次送信するが、基地局２においてa2チヤン
ネルが最大入力である。一方標準サービスエリア
５は設計値を超えた呼量が集中し空きチヤンネル
がないため、a2チヤンネルを通じて制御局３０よ
りの送信電力制御信号を移動局７に送出する。こ
れを受けた移動局７は送信電力を引き上げ、再度
発信用無線チヤンネルを使用する動作に入りa1，
a2，a3を順次送信する。 Next, a case will be described in which the transmission power of the mobile station 7 is increased from the control station 30 via the base station because the call volume exceeding the designed value is concentrated in the standard service area 5, but there is room in the adjacent service area. When the mobile station 7 on the movement route 10 starts to use the outgoing radio channel, the a 1 , a 2 ,
The A 3 channel is transmitted sequentially, but the A 2 channel is the maximum input at the base station 2. On the other hand, in the standard service area 5, the call volume exceeding the design value is concentrated and there are no free channels, so the control station 30 sends a transmission power control signal to the mobile station 7 through the A2 channel. Upon receiving this, the mobile station 7 raises its transmission power and starts using the outgoing wireless channel again a 1 ,
Send a 2 and a 3 sequentially.
この時の電界強度は第２図の電界強度１４で、
基地局１に対しては入力電界２５、基地局２に対
しては入力電界２４であり各々において判断基準
を満たしているが、基地局３では入力電界は非常
に低く判断基準を満たしていない。制御局は基地
局１、基地局２共に判断規準を満たしているが、
基地局２では空きチヤンネルが無いので、基地局
１において所定の手順で自局の空きチヤンネルの
内の１つを移動局７に割当てる接続動作を行う。 The electric field strength at this time is electric field strength 14 in Figure 2,
The input electric field 25 is input to base station 1, and the input electric field 24 is input electric field 24 to base station 2, both of which satisfy the criteria. However, the input electric field of base station 3 is very low and does not meet the criteria. Both base station 1 and base station 2 of the control stations satisfy the judgment criteria, but
Since the base station 2 has no free channels, the base station 1 performs a connection operation to allocate one of its own free channels to the mobile station 7 according to a predetermined procedure.
移動局７の送信電力を引き上げることにより等
価的に上記移動局７に対する基地局１のサービス
エリアは拡大され、基地局２のサービスエリアは
縮少され、基地局２の標準サービスエリア５の周
辺部に存在する移動局７は隣接するサービスエリ
ア４に分散され、基地局２の負荷が軽減される。 By raising the transmission power of the mobile station 7, the service area of the base station 1 for the mobile station 7 is equivalently expanded, the service area of the base station 2 is reduced, and the surrounding area of the standard service area 5 of the base station 2 is expanded. Mobile stations 7 existing in the base station 2 are distributed to adjacent service areas 4, and the load on the base station 2 is reduced.
第３図は本発明実施例方式に用いられる制御局
３０（第１図）の構成の一例を示すブロツク図で
ある。３１は回線制御部、３２は自動車電話回
線、３３は基地局１用発信用回線、３４は基地局
ｎ用発信用回線、３５は基地局１用着信用回線、
３６は基地局ｎ用着信用回線、３７は基地局１用
通話用回線、３８は基地局ｎ用通話用回線、３９
は使用率検出部、４０は送信電力設定部、４１は
基地局１用送信電力制御信号、４２は基地局ｎ用
送信電力制御信号、４３は基地局１の受信電界検
出信号、４４は基地局ｎの受信電界検出信号であ
る。これらは本発明実施例方式において特に用い
られるものである。 FIG. 3 is a block diagram showing an example of the configuration of the control station 30 (FIG. 1) used in the embodiment of the present invention. 31 is a line control unit, 32 is a car telephone line, 33 is an outgoing line for base station 1, 34 is an outgoing line for base station n, 35 is an incoming line for base station 1,
36 is an incoming line for base station n, 37 is a call line for base station 1, 38 is a call line for base station n, 39
4 is a usage rate detection unit, 40 is a transmission power setting unit, 41 is a transmission power control signal for base station 1, 42 is a transmission power control signal for base station n, 43 is a reception electric field detection signal of base station 1, and 44 is a base station This is the received electric field detection signal of n. These are particularly used in the embodiment method of the present invention.
第３図で、使用率検出部３９では、回線制御部
３１の接続状態から各基地局毎の回線使用率を検
出する。送信電力設定部４０では、使用率検出部
３９の出力からある基地局（実施例では２）の回
線の使用率が設計値を超え、且つ隣接局（実施例
では１と３）の回線に空きが或る程度以上あると
きは、その回線使用率が設計値を超えた基地局
（実施例では１）のサービスエリア内の新たに接
続を行おうとしている移動局の送信電力を引き上
げた値に設定するための送信電力制御信号（実施
例は41）を、発信用回線（実施例は33）を通じて
送出する。 In FIG. 3, a usage rate detection unit 39 detects the line usage rate of each base station from the connection state of the line control unit 31. The transmission power setting unit 40 determines, based on the output of the usage rate detection unit 39, that the line usage rate of a certain base station (2 in the example) exceeds the design value and that the lines of adjacent stations (1 and 3 in the example) are vacant. exceeds a certain level, the transmission power of the mobile station attempting to newly connect within the service area of the base station (1 in the example) whose line usage rate exceeds the design value is increased. A transmission power control signal for setting (41 in the embodiment) is sent out through the transmission line (33 in the embodiment).
第４図は本発明実施例方式に用いられる基地局
１〜３の構成例を示すブロツク図である。５１は
アンテナ、５２は送受共用器、５３は受信機、５
４は上り音声／データ信号、５５は送信機、５６
は下り音声／データ信号である。これらは普通の
基地局としての構成をあらわしており、５７は受
信電界検出部、５８は受信電界検出信号であつて
（第３図の４３〜４４のいづれかに相当）であつ
て、これらは本発明による方式において特に用い
られるものである。この第４図から分るように、
受信電界検出部は受信電界が所定の判断基準を超
えているかどうかを検出し、受信電界検出信号５
８を制御局に送出する。 FIG. 4 is a block diagram showing an example of the configuration of base stations 1 to 3 used in the system according to the embodiment of the present invention. 51 is an antenna, 52 is a duplexer, 53 is a receiver, 5
4 is an upstream voice/data signal, 55 is a transmitter, 56
is the downstream voice/data signal. These represent the configuration of an ordinary base station, 57 is a received electric field detection section, 58 is a received electric field detection signal (corresponding to any one of 43 to 44 in Fig. 3), and these are the main parts. It is particularly used in the method according to the invention. As you can see from this figure 4,
The received electric field detection section detects whether the received electric field exceeds a predetermined criterion and outputs a received electric field detection signal 5.
8 to the control station.
第５図は本発明実施例方式に用いられる移動局
の構成を示すブロツク図である。６１はアンテ
ナ、６２は送受共用器、６３は送信機、６４は受
信機、６５はシンセサイザ、６６は信号検出部、
６７は制御部、６８は局発信号、６９はチヤンネ
ル指定信号、７０は上り音声／データ信号、７１
は下り音声／データ信号、７２は送信電力設定部
をあらわしている。 FIG. 5 is a block diagram showing the configuration of a mobile station used in the embodiment of the present invention. 61 is an antenna, 62 is a duplexer, 63 is a transmitter, 64 is a receiver, 65 is a synthesizer, 66 is a signal detection unit,
67 is a control unit, 68 is a local oscillation signal, 69 is a channel designation signal, 70 is an upstream audio/data signal, 71
72 represents a downstream voice/data signal and a transmission power setting section.
この構成においては、はじめに一般的な機能を
説明すると、移動局発呼時に制御部６７がa1，
a2，a3などの発信用無線チヤンネルを順次指定し
シンセサイザ６５にて該当する局発信号を発信し
送信機６３で送信する。基地局では、この電波の
電界強度が判断基準を超えているかを判断し、上
記基地局において空きチヤンネルを指定し、上記
移動局では信号検出部６６において空きチヤンネ
ルの指定信号を検出しチヤンネル番号を制御部６
７に渡す。以上で通話に使用するチヤンネルを決
定し通話に入る。そして基地局の発呼時は該当す
る移動局番号と自番号が一致すれば、上記の手続
きシーケンスを開始し、基地局より空きチヤンネ
ルが指定され、チヤンネル番号を決定し、応答信
号を返送する。 In this configuration, to first explain the general functions, when the mobile station makes a call, the control unit 67 controls a 1 ,
Radio channels for transmission such as a 2 and a 3 are sequentially specified, and the synthesizer 65 generates the corresponding local oscillation signal, which is then transmitted by the transmitter 63. The base station determines whether the field strength of this radio wave exceeds the determination standard and designates an empty channel at the base station, and the mobile station detects the designation signal of the empty channel in the signal detection unit 66 and assigns the channel number. Control unit 6
Pass it to 7. Decide on the channel to use for the call and start the call. When the base station makes a call, if the corresponding mobile station number and own number match, the above procedure sequence is started, an empty channel is designated by the base station, the channel number is determined, and a response signal is sent back.
以上のような構成と機能を有する移動局におい
て、その移動局の所在するサービスエリアの使用
率が設計値を超えた時、そのエリアの基地局より
発信用無線チヤンネルで送信電力の制御信号が送
出され、移動局では信号検出部６６で送信電力制
御信号を検出し、制御部６７を経由し、送信電力
設定部７２に送られ送信電力を上げる。送信電力
制御信号を受信した移動局は新たに制御部６７が
a1，a2，a3などの発信用無線チヤンネルを順次送
信し、所定の判断規準を満たす基地局を判断し、
所定の手続により基地局を、旧基地局から新基地
局に切替える。 In a mobile station with the above configuration and functions, when the usage rate of the service area where the mobile station is located exceeds the design value, the base station in that area sends a transmission power control signal on the outgoing wireless channel. In the mobile station, a signal detection section 66 detects a transmission power control signal, and the signal is sent to a transmission power setting section 72 via a control section 67 to increase the transmission power. When the mobile station receives the transmission power control signal, the control unit 67
Sequentially transmits outgoing wireless channels such as a 1 , a 2 , a 3 , etc., determines the base station that satisfies predetermined criteria,
The base station is switched from the old base station to the new base station according to a predetermined procedure.
本実施例では、送信電力を上げることで標準サ
ービスエリア４を拡大したが、反対に送信電力を
下げることで標準サービスエリア４を拡大するこ
とも可能である。送信電力の変更によるサービス
エリアの広さの制御は、制御局３０の制御下にあ
る全基地局に及び、発生した呼量が設備容量を超
えたサービスエリアに対して、移動局との接続を
隣接するサービスエリアに分散するように有機的
な制御が、各移動局の送信電力を変更することに
よつて実施できることが特徴であつて、対象とす
るチヤンネル及びサービスエリアの組合せに限定
はない。 In this embodiment, the standard service area 4 is expanded by increasing the transmission power, but it is also possible to expand the standard service area 4 by decreasing the transmission power. The control of the size of the service area by changing the transmission power extends to all base stations under the control of the control station 30, and in the service area where the call volume exceeds the installed capacity, connection with mobile stations is restricted. The feature is that organic control can be performed by changing the transmission power of each mobile station so as to distribute it to adjacent service areas, and there is no limitation on the combination of target channels and service areas.
本発明の適用により、時々刻々変化する移動局
の呼量に対して方式が融通性を増大、発着信時に
対し柔軟に対応できるので、全体として扱える呼
量が多くなり、接続率を増大できる。接続率を一
定とすれば、従来より少ない設備および費用で移
動無線方式の運用ができる大きな効果が得られ
る。
By applying the present invention, the flexibility of the system increases with respect to the ever-changing mobile station call volume, and it is possible to flexibly respond to call origination/reception, thereby increasing the call volume that can be handled as a whole and increasing the connection rate. If the connection rate is kept constant, a significant effect can be obtained in that mobile radio systems can be operated with less equipment and costs than in the past.
第１図は本発明の実施例方式の概要を示す平面
図。第２図は第１図の移動局の位置と入力電界の
関係を示す特性図。第３図は本発明の実施例制御
局の構成を示すブロツク図。第４図は同上の基地
局の構成を示すブロツク図。第５図は本発明の実
施例の移動局の構成を示すブロツク図。
１〜３……基地局、４〜６……標準サービスエ
リア、７……移動局、８……標準送信電力時の移
動局のエリア、９……送信電力を引き上げた時の
移動局のエリア、１０……移動径路、１１……境
界線、３０……制御局、１２……受信電界の判断
規準、１３……標準送信電力時の移動局の電界強
度、１４……送信電力を上げた時の移動局からの
電界強度、１５〜２３……移動径路上の各位置、
２４〜２７……入力電界の特性値、３１……回線
制御部、３２〜３８……回線、３９……使用率検
出部、４０……送信電力設定部、４１，４２……
送信電力制御信号、５１……アンテナ、５２……
送受共用器、５３……受信機、５４，５６……音
声／データ信号、５５……送信機、５７……受信
電界検出部、５８……検出信号、６１……アンテ
ナ、６２……送受共用器、６３……送信機、６４
……受信機、６５……シンセサイザ、６６……信
号検出部、６７……制御部、６８……局発信号、
６９……チヤンネル指定信号、７０，７１……音
声／データ信号、７２……送信電力設定部。
FIG. 1 is a plan view showing an outline of an embodiment of the present invention. FIG. 2 is a characteristic diagram showing the relationship between the position of the mobile station in FIG. 1 and the input electric field. FIG. 3 is a block diagram showing the configuration of a control station according to an embodiment of the present invention. FIG. 4 is a block diagram showing the configuration of the base station same as above. FIG. 5 is a block diagram showing the configuration of a mobile station according to an embodiment of the present invention. 1 to 3...Base station, 4 to 6...Standard service area, 7...Mobile station, 8...Mobile station area at standard transmission power, 9...Mobile station area when transmission power is raised , 10...Movement path, 11...Boundary line, 30...Control station, 12...Reception electric field judgment criteria, 13...Mobile station electric field strength at standard transmission power, 14...Increased transmission power The electric field strength from the mobile station at the time, 15 to 23...each position on the movement path,
24-27... Characteristic value of input electric field, 31... Line control unit, 32-38... Line, 39... Usage rate detection unit, 40... Transmission power setting unit, 41, 42...
Transmission power control signal, 51... antenna, 52...
Transmission/reception duplexer, 53...Receiver, 54, 56...Audio/data signal, 55...Transmitter, 57...Reception electric field detector, 58...Detection signal, 61...Antenna, 62...Transmission/reception duplex device, 63...transmitter, 64
... Receiver, 65 ... Synthesizer, 66 ... Signal detection section, 67 ... Control section, 68 ... Local oscillation signal,
69...Channel designation signal, 70, 71...Audio/data signal, 72...Transmission power setting section.
Claims (1)
持つ複数の基地局と、これら基地局を制御する制
御局とを含み、上記の各基地局に到達する移動局
送信電波の電力所定の判断基準を満たす基地局に
対して上記移動局が通信を行えるように構成され
た通信方式において、 前記制御局に、 各基地局の使用率を検出する手段と、 この手段に検出された一つの基地局の使用率が
設定値を超えかつその一つの基地局に隣接する他
の基地局の通信回線に空きチヤンネルがあるとき
に前記制御局より前記の一つの基地局と通信を行
つている各移動局の送信電力を変更した値に設定
するための送信電力の制御信号を前記の一つの基
地局を介して送出する手段とを設け、 前記移動局に、 前記送信電力の制御信号受信に応動する送信電
力変更手段を備えた ことを特徴とする移動無線通信方式。[Claims] 1. Includes a plurality of base stations each serving a plurality of phase-adjacent service areas and a control station that controls these base stations, and transmits radio waves from mobile stations that reach each of the above base stations. In a communication method configured to allow the mobile station to communicate with a base station that satisfies a predetermined power determination criterion, the control station includes means for detecting the usage rate of each base station; When the usage rate of one base station exceeds a set value and there is an empty channel in the communication line of another base station adjacent to that one base station, the control station communicates with the one base station. means for transmitting a transmission power control signal via the one base station to set the transmission power of each mobile station connected to the mobile station to a changed value, and transmitting the transmission power control signal to the mobile station. A mobile radio communication system characterized by comprising a transmission power changing means responsive to reception.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57044897A JPS58161542A (en) | 1982-03-19 | 1982-03-19 | Mobile radio communication system |
| US06/388,367 US4435840A (en) | 1981-06-22 | 1982-06-14 | Radio mobile communication system wherein probability of loss of calls is reduced without a surplus of base station equipment |
| CA000405562A CA1176311A (en) | 1981-06-22 | 1982-06-21 | Radio mobile communication system wherein probability of loss of calls is reduced without a surplus of base station equipment |
| AU85095/82A AU546036B2 (en) | 1981-06-22 | 1982-06-22 | Radio mobile communications |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57044897A JPS58161542A (en) | 1982-03-19 | 1982-03-19 | Mobile radio communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58161542A JPS58161542A (en) | 1983-09-26 |
| JPS6365247B2 true JPS6365247B2 (en) | 1988-12-15 |
Family
ID=12704264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57044897A Granted JPS58161542A (en) | 1981-06-22 | 1982-03-19 | Mobile radio communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58161542A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH114476A (en) * | 1997-06-11 | 1999-01-06 | Nec Corp | Mobile communication system, its traffic collection control method, and recording medium having traffic collection control program recorded therein |
-
1982
- 1982-03-19 JP JP57044897A patent/JPS58161542A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58161542A (en) | 1983-09-26 |
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