JPH0775153A - Mobile communication system - Google Patents
Mobile communication systemInfo
- Publication number
- JPH0775153A JPH0775153A JP5217715A JP21771593A JPH0775153A JP H0775153 A JPH0775153 A JP H0775153A JP 5217715 A JP5217715 A JP 5217715A JP 21771593 A JP21771593 A JP 21771593A JP H0775153 A JPH0775153 A JP H0775153A
- Authority
- JP
- Japan
- Prior art keywords
- base station
- base stations
- communication system
- mobile communication
- traffic data
- 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
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、携帯電話方式、自動車
電話方式、その他移動無線端末が複数の基地局と通信で
きるように設定された移動通信システムに利用する。本
発明は特に通信チャネルの選択制御に関する。本発明
は、あらかじめ割り当てられた制御チャネルを利用し
て、相互に干渉がないように通信用チャネルの選択制御
を行う方式に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a mobile phone system, a car phone system, and other mobile communication systems set up so that a mobile radio terminal can communicate with a plurality of base stations. The invention particularly relates to communication channel selection control. The present invention relates to a method for controlling selection of communication channels by using a control channel assigned in advance so as not to interfere with each other.
【０００２】[0002]
【従来の技術】従来、移動通信システムは、複数の基地
局に対して通信可能な移動無線端末が発呼する場合に
は、各基地局の電波の電界強度を比較し、最も電界強度
の高い基地局に対して発呼要求を送信していた。2. Description of the Related Art Conventionally, in a mobile communication system, when a mobile radio terminal capable of communicating with a plurality of base stations makes a call, the electric field strengths of the radio waves of the respective base stations are compared and the electric field strength is the highest. A call request was being sent to the base station.
【０００３】[0003]
【発明が解決しようとする課題】しかし、このような従
来の移動通信システムでは、移動無線端末は常に電界強
度の最も高い基地局に発呼要求を送信するために、かり
にトラヒック量の多い基地局であってもそれが最も電界
強度の高い基地局であれば発呼要求が送信され、ますま
すトラヒック量が増大する欠点があった。However, in such a conventional mobile communication system, since the mobile radio terminal always sends a call request to the base station having the highest electric field strength, the base station having a large amount of traffic. However, if it is the base station with the highest electric field strength, the call request is transmitted, and the traffic volume increases further.
【０００４】ここで、トラヒック変動に応じて、通話チ
ャネルを通話中のゾーンから他ゾーンへ切り替えること
により、ある特定の無線ゾーンにトラヒックが集中する
場合に、そのトラヒックの一部を周辺の他の無線ゾーン
に分散する提案がある（特開平２−６９０２７号公
報）。また、ゾーン内トラヒックの時間的変化に対応し
てゾーンの大きさを変えることで、個々のゾーンのピー
クトラヒック量を減少させる提案がある（特開昭６４−
６８１３８号公報）。また、時間により変化する各無線
ゾーンのトラヒック量に応じて各無線ゾーンの割り当て
チャネル数を調整することにより、無線ゾーンに対して
割り当てるチャネルを時間的に多重化して複数の無線ゾ
ーンで共用利用でき、より効率的な無線チャネルの利用
向上を図る提案がある（特開昭６３−２７２１３０号公
報）。[0004] Here, when traffic is concentrated in a certain radio zone by switching the call channel from the active zone to another zone in response to traffic fluctuations, a part of the traffic may be changed to another zone. There is a proposal to disperse in wireless zones (JP-A-2-69027). Further, there is a proposal to reduce the peak traffic amount of each zone by changing the size of the zone in response to the temporal change of the intra-zone traffic (Japanese Patent Laid-Open No. 64-64-
68138). Also, by adjusting the number of channels allocated to each wireless zone according to the traffic volume of each wireless zone that changes with time, the channels allocated to each wireless zone can be multiplexed in time and shared by multiple wireless zones. , There is a proposal for more efficient use of wireless channels (Japanese Patent Laid-Open No. 63-272130).
【０００５】本発明は前記の欠点を解決するもので、ゾ
ーンサイズまたはチャネル数を変えることなく、各基地
局のトラヒック量を平均化でき、かつ電波の有効利用が
できる移動通信システムを提供することを目的とする。The present invention solves the above-mentioned drawbacks and provides a mobile communication system capable of averaging the traffic volume of each base station and effectively utilizing radio waves without changing the zone size or the number of channels. With the goal.
【０００６】[0006]
【課題を解決するための手段】本発明は、それぞれの通
信可能範囲が少なくとも一部で重なるように設定された
複数の基地局と、この複数の基地局と双方向の通信を行
う移動無線端末とを備えた移動通信システムにおいて、
前記複数の基地局はそれぞれ、自ゾーンのトラヒックデ
ータを制御チャネルの信号に付加して送信する手段を備
え、前記移動無線端末は、通信可能な複数の基地局から
受信される制御チャネルの信号に付加されたトラヒック
データに基づき一つの基地局を選択する手段と、その一
つの基地局に発呼要求を送信する手段とを備えたことを
特徴とする。SUMMARY OF THE INVENTION The present invention is directed to a plurality of base stations set so that their respective communicable ranges at least partially overlap each other, and a mobile radio terminal for bidirectional communication with the plurality of base stations. In a mobile communication system equipped with
Each of the plurality of base stations includes means for adding traffic data of its own zone to a signal of a control channel and transmitting the mobile radio terminal, and the mobile radio terminal is provided with a signal of a control channel received from a plurality of base stations with which communication is possible. It is characterized by comprising means for selecting one base station based on the added traffic data and means for transmitting a call request to the one base station.
【０００７】また、本発明は、前記基地局は、それぞれ
制御チャネルの信号に付加すべき自局のトラヒックデー
タを所定周期で自動的に収集する手段を備えることがで
きる。In the present invention, the base station may be provided with means for automatically collecting the traffic data of its own station to be added to the control channel signal at a predetermined cycle.
【０００８】さらに、本発明は、前記選択する手段は、
通信可能な複数の基地局から受信される制御チャネルの
信号に付加されたトラヒックデータを比較してそのトラ
ヒック量の最も少ない基地局を自動的に選択する手段で
ある。Further, in the present invention, the means for selecting is
It is a means for comparing the traffic data added to the control channel signals received from a plurality of communicable base stations and automatically selecting the base station having the smallest traffic amount.
【０００９】また、別の観点は、前記移動通信システム
に利用する移動無線端末である。この移動無線端末は前
記移動通信システムとは別に商品として取引することが
できる。Another aspect is a mobile radio terminal used in the mobile communication system. This mobile radio terminal can be traded as a product separately from the mobile communication system.
【００１０】[0010]
【作用】基地局は自ゾーンのトラヒックデータを制御チ
ャネルの信号に付加して送信し、移動無線端末は、通信
可能な複数の基地局からの制御チャネルの信号に付加さ
れたトラヒックデータを比較し最もトラヒック量の少な
い基地局に発呼要求を送信するので、ゾーンサイズまた
はチャネル数を変えることなく、各基地局のトラヒック
量を平均化できる。各基地局のトラヒック量が平均化さ
れるので、各基地局に割り当てられたチャネルが平均的
に利用されることにより、電波の有効利用がはかれる。The base station adds the traffic data of its own zone to the control channel signal and transmits it, and the mobile radio terminal compares the traffic data added to the control channel signals from a plurality of base stations with which it can communicate. Since the call request is transmitted to the base station with the smallest traffic volume, the traffic volume of each base station can be averaged without changing the zone size or the number of channels. Since the traffic volume of each base station is averaged, the channels allocated to each base station are used on average, so that the radio waves can be effectively used.
【００１１】[0011]
【実施例】本発明の実施例について図面を参照して説明
する。Embodiments of the present invention will be described with reference to the drawings.
【００１２】図１本発明一実施移動通信システムのブロ
ック構成図である。図２は本発明の移動通信システムの
基地局のブロック構成図である。図３は本発明の移動通
信システムの移動無線端末のブロック構成図である。図
１〜図３において、移動通信システムは、それぞれ通信
可能範囲が少なくとも一部で重なるように設定された複
数の基地局１０1 、１０2 と、複数の基地局１０1 、１
０2 と双方向の通信を行う移動無線端末２０1 〜２０3
とを備え、複数の基地局１０1 、１０2 はそれぞれ、自
ゾーンＡ1 、Ａ2 内の移動無線端末２０1 〜２０3 と無
線信号を送受信する無線部１１と、無線部１１を制御す
る制御部１２とを含み、移動無線端末２０1 〜２０
3 は、自端末が在圈するゾーンＡ1 、Ａ2 の基地局１０
1 、１０2 と無線信号を送受信する無線部２１と、無線
部２１を制御する制御部２２とを含む。1 is a block diagram of a mobile communication system embodying the present invention. FIG. 2 is a block diagram of the base station of the mobile communication system of the present invention. FIG. 3 is a block diagram of a mobile radio terminal of the mobile communication system of the present invention. 1 to 3, the mobile communication system includes a plurality of base stations 10 1 and 10 2 and a plurality of base stations 10 1 and 1 1 which are set so that their communicable ranges overlap at least partially.
0 2 and mobile radio terminals 20 1 to 20 3 that perform bidirectional communication.
And a plurality of base stations 10 1 and 10 2 respectively control the radio unit 11 that transmits and receives radio signals to and from the mobile radio terminals 20 1 to 20 3 in the own zones A 1 and A 2 and the radio unit 11. The mobile radio terminals 20 1 to 20 including the control unit 12
3 is the base station 10 in the zones A 1 and A 2 in which the own terminal is located.
Includes a radio unit 21 for transmitting and receiving 1, 10 2 and the radio signal, and a control unit 22 that controls the radio unit 21.
【００１３】ここで本発明の特徴とするところは、複数
の基地局１０1 、１０2 はそれぞれ、自ゾーンＡ1 、Ａ
2 のトラヒックデータを制御チャネルに付加して送信す
る手段（制御部１２および無線部１１に含まれる）を備
え、移動無線端末２０1 〜２０3 （本実施例では移動無
線端末２０3 が該当する）は、通信可能な複数の基地局
１０1 、１０2 からの制御チャネルに付加されたトラヒ
ックデータに基づき一つの基地局を選択する手段と、そ
の一つの基地局に発呼要求を送信する手段（制御部２２
および無線部２１に含まれる）とを備えたことにある。Here, a feature of the present invention is that the plurality of base stations 10 1 and 10 2 respectively have their own zones A 1 and A 2.
The mobile radio terminals 20 1 to 20 3 (corresponding to the mobile radio terminal 20 3 in this embodiment) are provided with means (included in the control unit 12 and the radio unit 11) for adding the traffic data of 2 to the control channel and transmitting the data. ) Is means for selecting one base station based on traffic data added to control channels from a plurality of communicable base stations 10 1 , 10 2 , and means for transmitting a call request to the one base station. (Control unit 22
And included in the wireless unit 21).
【００１４】また、基地局１０1 、１０2 は、それぞれ
制御チャネルの信号に付加すべき自局のトラヒックデー
タを所定周期で自動的に収集する手段として収集手段１
３（制御部１２に含まれる）を含む。The base stations 10 1 and 10 2 are means for automatically collecting the traffic data of their own stations to be added to the signals of the control channels in a predetermined cycle, respectively.
3 (included in the control unit 12).
【００１５】さらに、前記選択する手段は、通信可能な
複数の基地局１０1 、１０2 から受信される制御チャネ
ルの信号に付加されたトラヒックデータを比較する比較
手段２３と、比較手段２３の比較結果に基づき無線部２
１に対してそのトラヒック量の最も少ない基地局を自動
的に選択する手段として比較手段２３（制御部２２に含
まれる）である。Further, the selecting means compares the comparing means 23 for comparing the traffic data added to the signals of the control channels received from the plurality of communicable base stations 10 1 , 10 2 , and the comparing means 23. Radio unit 2 based on the result
The comparison unit 23 (included in the control unit 22) is a unit for automatically selecting the base station having the smallest traffic amount for the number 1.
【００１６】このような構成の移動通信システムの動作
について説明する。The operation of the mobile communication system having such a configuration will be described.
【００１７】図４は本発明の移動通信システムの基地局
が送信する制御チャネルの信号の構成図であり、図４
（ａ）は基地局１０1 が送信する制御チャネルの信号の
内容を示し、また図４（ｂ）は基地局１０2 が送信する
制御チャネルの信号の内容を示す。図１において、簡単
化のためにゾーンは二つとする。ゾーンＡ1 、Ａ2 はそ
れぞれ基地局１０1 、１０2 のサービスゾーンである。
また、移動無線端末２０1 はゾーンＡ1 に在圈し、移動
無線端末２０2 はゾーンＡ2 に在圈し、また移動無線端
末２０3 はゾーンＡ1 とゾーンＡ2 との共通領域に在圈
しているものとする。FIG. 4 is a block diagram of a control channel signal transmitted by the base station of the mobile communication system of the present invention.
4A shows the content of the control channel signal transmitted by the base station 10 1 , and FIG. 4B shows the content of the control channel signal transmitted by the base station 10 2 . In FIG. 1, there are two zones for simplification. Zones A 1 and A 2 are service zones of the base stations 10 1 and 10 2 , respectively.
The mobile wireless terminal 20 1 is located in the zone A 1 , the mobile wireless terminal 20 2 is located in the zone A 2 , and the mobile wireless terminal 20 3 is located in the common area between the zones A 1 and A 2. It is supposed to be.
【００１８】いま、移動無線端末２０1 〜２０3 が発呼
する場合について説明する。各基地局１０1 、１０2 で
は、制御部１２で収集手段１３で所定周期で自ゾーンの
呼数を収集し、この収集結果をトラヒックデータとして
制御チャネルに付加し、基地局の無線部１１で送信す
る。Now, a case where the mobile radio terminals 20 1 to 20 3 make a call will be described. In each of the base stations 10 1 and 10 2 , the control unit 12 collects the number of calls in its own zone by the collection unit 13 at a predetermined period, adds the collected result to the control channel as traffic data, and the radio unit 11 of the base station Send.
【００１９】移動無線端末２０1 は、通信可能な基地局
１０1 に対して発呼要求を送信し、また移動無線端末２
０2 は通信可能な基地局１０2 に対して発呼要求を送信
する。移動無線端末２０3 は基地局１０1 、１０2 のい
ずれに対しても発呼要求を送信することが可能であが、
制御部２２は、比較手段２３で無線部２１が受信した基
地局１０1 の制御チャネルの信号および基地局１０2 の
制御チャネルの信号に付加されたトラヒックデータを比
較し、この比較結果に基づきトラヒック量の少ない方の
基地局に無線部２１を制御して発呼要求を送信させる。The mobile radio terminal 20 1 sends a call request to the communicable base station 10 1 , and the mobile radio terminal 2 1
0 2 transmits a call request to the communicable base station 10 2 . The mobile radio terminal 20 3 can send a call request to any of the base stations 10 1 and 10 2 .
The control unit 22 compares the traffic data added to the control channel signal of the base station 10 1 and the control channel signal of the base station 10 2 received by the radio unit 21 by the comparison unit 23, and based on the comparison result, the traffic data. The base station with the smaller volume controls the radio unit 21 to transmit the call request.
【００２０】また、実施例の内で移動無線端末に関して
は、本実施例の対象として市場で個別に商品として取引
することができ、利用者は移動通信システムに接続して
使用できる。The mobile wireless terminal in the embodiments can be individually traded as a commodity in the market as a target of this embodiment, and the user can use it by connecting to the mobile communication system.
【００２１】[0021]
【発明の効果】以上説明したように、本発明は、ゾーン
サイズまたはチャネル数を変えることなく、各基地局の
トラヒック量が平均化でき、かつ電波の有効利用がはか
れる優れた効果がある。As described above, the present invention has the excellent effects that the traffic volume of each base station can be averaged and the effective use of radio waves can be achieved without changing the zone size or the number of channels.
【図１】本発明一実施例移動通信システムのブロック構
成図。FIG. 1 is a block configuration diagram of a mobile communication system according to an embodiment of the present invention.
【図２】本発明の移動通信システムの基地局のブロック
構成図。FIG. 2 is a block configuration diagram of a base station of the mobile communication system of the present invention.
【図３】本発明の移動通信システムの移動無線端末のブ
ロック構成図。FIG. 3 is a block configuration diagram of a mobile radio terminal of the mobile communication system of the present invention.
【図４】本発明の移動通信システムの基地局が送信する
制御チャネルの構成図。FIG. 4 is a configuration diagram of a control channel transmitted by a base station of the mobile communication system of the present invention.
１０、１０1 、１０2 基地局 １１ 基地局の無線部 １２ 基地局の制御部 １３ 収集手段 ２０、２０1 〜２０3 移動無線端末 ２１ 移動無線端末の無線部 ２２ 移動無線端末の制御部 ２３ 比較手段 Ａ1 、Ａ2 ゾーン10, 10 1, 10 2 control unit 23 compares the base station 11 a radio unit 22 mobile radio terminal of the control unit 13 collects in the base station of the radio unit 12 base station unit 20, 20 20 1 to 20 3 mobile radio terminal 21 a mobile radio terminal Means A 1 , A 2 zone
Claims (4)
部で重なるように設定された複数の基地局と、この複数
の基地局と双方向の通信を行う移動無線端末とを備えた
移動通信システムにおいて、 前記複数の基地局はそれぞれ、自ゾーンのトラヒックデ
ータを制御チャネルの信号に付加して送信する手段を備
え、 前記移動無線端末は、通信可能な複数の基地局から受信
される制御チャネルの信号に付加されたトラヒックデー
タに基づき一つの基地局を選択する手段と、その一つの
基地局に発呼要求を送信する手段とを備えたことを特徴
とする移動通信システム。1. A mobile communication system comprising a plurality of base stations set so that their respective communicable ranges at least partially overlap with each other, and a mobile radio terminal for performing bidirectional communication with the plurality of base stations. , Each of the plurality of base stations comprises means for adding traffic data of its own zone to a signal of a control channel and transmitting the signal, wherein the mobile radio terminal receives a signal of a control channel received from a plurality of base stations with which communication is possible. A mobile communication system comprising means for selecting one base station based on traffic data added to the base station and means for transmitting a call request to the one base station.
信号に付加すべき自局のトラヒックデータを所定周期で
自動的に収集する手段を備えた請求項１記載の移動通信
システム。2. The mobile communication system according to claim 1, wherein the base station includes means for automatically collecting the traffic data of its own station to be added to the signal of the control channel in a predetermined cycle.
基地局から受信される制御チャネルの信号に付加された
トラヒックデータを比較してそのトラヒック量の最も少
ない基地局を自動的に選択する手段である請求項１記載
の移動通信システム。3. The selecting means compares traffic data added to signals of control channels received from a plurality of base stations with which communication is possible, and automatically selects a base station having the smallest traffic amount. The mobile communication system according to claim 1, which is means.
ムに利用する移動無線端末。4. A mobile radio terminal used in the mobile communication system according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5217715A JPH0775153A (en) | 1993-09-01 | 1993-09-01 | Mobile communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5217715A JPH0775153A (en) | 1993-09-01 | 1993-09-01 | Mobile communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0775153A true JPH0775153A (en) | 1995-03-17 |
Family
ID=16708607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5217715A Pending JPH0775153A (en) | 1993-09-01 | 1993-09-01 | Mobile communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0775153A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7346372B2 (en) | 2004-10-27 | 2008-03-18 | Fujitsu Limited | Radio communication system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63226133A (en) * | 1987-03-16 | 1988-09-20 | Nippon Telegr & Teleph Corp <Ntt> | Radio zone selecting system |
| JPH0470094A (en) * | 1990-07-09 | 1992-03-05 | Nippon Telegr & Teleph Corp <Ntt> | Mobile radio communication system and mobile station device |
| JPH04213234A (en) * | 1990-12-07 | 1992-08-04 | Nippon Telegr & Teleph Corp <Ntt> | Radio zone selecting method |
| JP3094850B2 (en) * | 1995-06-22 | 2000-10-03 | 三菱自動車工業株式会社 | Power transmission hydraulic system |
-
1993
- 1993-09-01 JP JP5217715A patent/JPH0775153A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63226133A (en) * | 1987-03-16 | 1988-09-20 | Nippon Telegr & Teleph Corp <Ntt> | Radio zone selecting system |
| JPH0470094A (en) * | 1990-07-09 | 1992-03-05 | Nippon Telegr & Teleph Corp <Ntt> | Mobile radio communication system and mobile station device |
| JPH04213234A (en) * | 1990-12-07 | 1992-08-04 | Nippon Telegr & Teleph Corp <Ntt> | Radio zone selecting method |
| JP3094850B2 (en) * | 1995-06-22 | 2000-10-03 | 三菱自動車工業株式会社 | Power transmission hydraulic system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7346372B2 (en) | 2004-10-27 | 2008-03-18 | Fujitsu Limited | Radio communication system |
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