JPH0767165A - Multiple radio zone mobile communication system - Google Patents
Multiple radio zone mobile communication systemInfo
- Publication number
- JPH0767165A JPH0767165A JP20736293A JP20736293A JPH0767165A JP H0767165 A JPH0767165 A JP H0767165A JP 20736293 A JP20736293 A JP 20736293A JP 20736293 A JP20736293 A JP 20736293A JP H0767165 A JPH0767165 A JP H0767165A
- Authority
- JP
- Japan
- Prior art keywords
- base station
- zone
- small
- call
- radio 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.)
- Granted
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は多重無線ゾーン移動通信
方式に関する。移動通信技術の発展に伴い携帯電話機及
び自動車電話機等の移動局を使用した無線通信の需要が
年々増加している。この増加に伴って有限な無線周波数
を有効利用するための方式が現在検討されているが、そ
の中に多重無線ゾーン移動通信方式がある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-radio zone mobile communication system. With the development of mobile communication technology, the demand for wireless communication using mobile stations such as mobile phones and car phones is increasing year by year. Along with this increase, a method for effectively utilizing a finite radio frequency is currently under study, and among them, there is a multiple radio zone mobile communication method.
【０００２】この方式は、図５に示すように通信サービ
スエリアを複数の小無線ゾーンＺ1〜Ｚ19に分割し、こ
の分割された小無線ゾーンＺ1 〜Ｚ19の全てを包括する
大無線ゾーンＺA を形成し、移動局がＴＤＭＡ（時分割
多元接続）方式にて小無線ゾーンＺ1 〜Ｚ19の基地局
（図示せず）及び大無線ゾーンＺA の基地局（図示せ
ず）の何れかと通話するものである。In this system, a communication service area is divided into a plurality of small radio zones Z 1 to Z 19 as shown in FIG. 5, and a large radio that covers all of the divided small radio zones Z 1 to Z 19. A zone Z A is formed, and a mobile station uses a TDMA (time division multiple access) method to form base stations (not shown) in the small radio zones Z 1 to Z 19 and base stations (not shown) in the large radio zone Z A. The call is made with any of the above.
【０００３】[0003]
【従来の技術】上述の産業上の利用分野で説明した図５
に示す多重無線ゾーンシステムにおいては、自動車電話
などの高速な移動局は大無線ゾーンＺA で、携帯電話な
どの低速な移動局は小無線ゾーンＺ1 〜Ｚ19で通話する
ことによって、加入者容量の増大とチャネル切替制御の
減少を目指している。2. Description of the Related Art FIG. 5 explained in the above-mentioned industrial application field.
In the multi-radio zone system shown in FIG. 1, a mobile station such as a mobile phone makes a call in the large radio zone Z A , and a mobile station such as a mobile phone makes a call in the small radio zones Z 1 to Z 19 to make a subscriber We aim to increase capacity and reduce channel switching control.
【０００４】サービスエリアを複数の小無線ゾーンＺ1
〜Ｚ19に分割した場合、ある程度離れた小無線ゾーン
（例えばＺ1 とＺ15）では同一の無線周波数を使用する
ことが可能となる。これによって無線周波数を有効利用
することが可能となる。このことは小無線ゾーンを小さ
くすればするほど効果的である。The service area is divided into a plurality of small radio zones Z 1
If divided into to Z 19, it is possible to use the same radio frequency in small radio zone some distance (e.g. Z 1 and Z 15). This makes it possible to effectively use the radio frequency. This is more effective as the small wireless zone is made smaller.
【０００５】このように小無線ゾーン化を進めることに
よって、移動通信システムの大容量化の要求に応じるこ
とができる。ところで、現在実用化されている移動通信
システムにおいては、移動局が通話中に他のゾーンに移
行した場合、通話品質維持のために通話チャネルの切り
替えを行う。By advancing the small wireless zone in this way, it is possible to meet the demand for a large capacity of the mobile communication system. By the way, in a mobile communication system that is currently in practical use, when a mobile station moves to another zone during a call, the call channel is switched to maintain the call quality.
【０００６】このような切り替え頻度の多いものは、自
動車電話及び電車等の乗物で使用される携帯電話であ
る。しかし、上述したように小無線ゾーン化が進めば移
動局の通話チャネル切り替えの頻度が増加し、その分、
基地局装置等に負担がかかることになる。A mobile phone used in vehicles such as car phones and trains has a high switching frequency. However, as mentioned above, if the small wireless zone is advanced, the frequency of mobile station call channel switching will increase.
This will put a burden on the base station device and the like.
【０００７】そこで、小無線ゾーン化による加入者容量
の増大と、チャネル切り替え頻度の減少を目的として小
無線ゾーンに大無線ゾーンを重ねて構成した多重無線ゾ
ーンシステムが提案されている。Therefore, a multi-radio zone system has been proposed in which a large radio zone is superposed on a small radio zone for the purpose of increasing the subscriber capacity by reducing the radio zone and reducing the frequency of channel switching.
【０００８】[0008]
【発明が解決しようとする課題】上述したような多重無
線ゾーンシステムにおいては、より一層の周波数利用効
率の向上を目指す他、通話品質向上等を目標とするディ
ジタル化も進められている。In the multiplex wireless zone system as described above, in addition to further improving the frequency utilization efficiency, digitization aiming at the improvement of communication quality is also being promoted.
【０００９】しかし、ＴＤＭＡ等のディジタル信号を多
重無線ゾーン方式で伝送した場合、小無線ゾーンにおい
て移動局がその基地局と通信する場合と、大無線ゾーン
において移動局がその基地局と通信する場合とで、信号
の伝搬遅延時間が異なる。However, when a digital signal such as TDMA is transmitted by the multiple radio zone system, when the mobile station communicates with the base station in the small radio zone and when the mobile station communicates with the base station in the large radio zone. And, the signal propagation delay time is different.
【００１０】このため、例えば移動局が小無線ゾーンか
ら大無線ゾーンへ移行する際に基地局を切り替えると、
伝搬遅延時間の差異によってタイムスロットの同期確立
に時間を要し、瞬断するといった問題が生じる。Therefore, for example, when the mobile station switches the base station when shifting from the small radio zone to the large radio zone,
Due to the difference in propagation delay time, it takes time to establish synchronization of time slots, which causes a problem of instantaneous interruption.
【００１１】これを図５を参照して具体的に説明する。
例えば、いま停車中の自動車電話機が小無線ゾーンＺ17
の基地局（図示せず）と接続して通話を開始し、その
後、移動を始めると、大無線ゾーンＺA へのチャネル切
り替えを行う。This will be specifically described with reference to FIG.
For example, if a car phone that is currently stopped is in the small wireless zone Z 17
When the mobile station is connected to a base station (not shown) to start a call and then starts moving, the channel is switched to the large wireless zone Z A.
【００１２】この場合、通話中の移動局と小無線ゾーン
の基地局との通信距離と、チャネル切り替え先の大無線
ゾーンの基地局との通信距離とが異なるので、電波伝搬
で生じる遅延時間も異なる。In this case, since the communication distance between the mobile station during the call and the base station in the small radio zone and the communication distance between the base station in the large radio zone to which the channel is switched are different, the delay time caused by the radio wave propagation is also increased. different.
【００１３】例えば、大無線ゾーンＺA の半径を１０ｋ
ｍ、小無線ゾーンＺ17の半径を１００ｍとすると、大無
線ゾーンＺA での伝搬遅延時間は最大で約３３μ秒、小
無線ゾーンＺ17では約０．３３μ秒である。For example, if the radius of the large radio zone Z A is 10 k
m and the radius of the small wireless zone Z 17 are 100 m, the maximum propagation delay time in the large wireless zone Z A is about 33 μsec, and about 0.33 μsec in the small wireless zone Z 17 .
【００１４】変調速度が３００ｋｂｏｕｄであるとする
と大無線ゾーンＺA では約１０シンボルのずれが生じ
る。従って、このまま小無線ゾーンＺ17から大無線ゾー
ンＺA へチャネル切り替えを行うと、同期確立のための
時間を要し、通話が一時的に途切れることがある。If the modulation rate is 300 kbaud, a shift of about 10 symbols occurs in the large radio zone Z A. Therefore, if the channel is switched from the small wireless zone Z 17 to the large wireless zone Z A as it is, it takes time for establishing the synchronization, and the call may be temporarily interrupted.
【００１５】本発明は、このような点に鑑みてなされた
ものであり、ＴＤＭＡ方式での通信中に移動局が小無線
ゾーンから大無線ゾーンへチャネル切り替えを行う際
に、瞬断無く行うことができる多重無線ゾーン移動通信
方式を提供することを目的としている。The present invention has been made in view of the above circumstances, and can be performed without interruption when the mobile station switches the channel from the small radio zone to the large radio zone during communication in the TDMA system. It is an object of the present invention to provide a multi-radio zone mobile communication system capable of performing the above.
【００１６】[0016]
【課題を解決するための手段】図１に本発明の原理図で
あり、多重無線ゾーン移動通信方式に用いられる本発明
の特徴部分である移動局のブロック構成図を示したもの
である。FIG. 1 is a principle diagram of the present invention, and is a block diagram of a mobile station which is a characteristic part of the present invention used in a multiple wireless zone mobile communication system.
【００１７】多重無線ゾーン移動通信方式とは、通信サ
ービスエリアを複数の小無線ゾーンに分割し、この分割
された小無線ゾーンの全てを包括する大無線ゾーンを形
成し、移動局が時分割多元接続方式にて小無線ゾーンの
基地局及び大無線ゾーンの基地局の何れかと通話するも
のである。In the multiple wireless zone mobile communication system, the communication service area is divided into a plurality of small wireless zones to form a large wireless zone which covers all of the divided small wireless zones. The communication method is to communicate with either a small wireless zone base station or a large wireless zone base station.
【００１８】図中、２２，２３は第１及び第２送受信手
段であり、小無線ゾーン及び大無線ゾーンの基地局と通
信を行うものである。２１は速度検出手段であり、自己
移動局の移動速度を検出するものである。In the figure, 22 and 23 are first and second transmitting / receiving means for communicating with base stations in the small wireless zone and the large wireless zone. Reference numeral 21 is a speed detecting means for detecting the moving speed of the own mobile station.
【００１９】２０ａは同期制御手段であり、第１及び第
２送受信手段２２，２３の一方( 例えば２２）が小無線
ゾーンの基地局と通話中に他方２３が大無線ゾーンの基
地局の制御チャネルに同期を取るように制御するもので
ある。Reference numeral 20a is a synchronization control means, and one of the first and second transmission / reception means 22 and 23 (for example, 22) is in communication with a base station in the small radio zone while the other 23 is a control channel of the base station in the large radio zone. It is controlled to synchronize with.
【００２０】２０ｂは送信制御手段であり、移動速度が
基準値を越えた場合に無通話状態の送受信手段２３を用
い、同期制御手段２０ａにより同期の取られたて大無線
ゾーンの基地局の制御チャネルで通話接続要求信号を送
信する制御を行うものである。Reference numeral 20b is a transmission control means which controls the base station in the large radio zone which is synchronized by the synchronization control means 20a by using the transmission / reception means 23 in the non-communication state when the moving speed exceeds the reference value. It controls the transmission of a call connection request signal on the channel.
【００２１】２０ｃは切替制御手段であり、通話接続要
求信号の送信によって通話チャネルが設定された後に、
該通話チャネルに切り替えて通話を継続する制御を行う
ものである。Reference numeral 20c denotes a switching control means, which sets a call channel by transmitting a call connection request signal,
The control is performed to switch to the call channel and continue the call.
【００２２】[0022]
【作用】上述した本発明によれば、同期制御手段２０ａ
の制御によって、例えば第１送受信手段２２が小無線ゾ
ーンの基地局と通話中に第２送受信手段２３が大無線ゾ
ーンの基地局の制御チャネルに同期を取る。According to the present invention described above, the synchronization control means 20a.
Control of the second transmitting / receiving means 23 synchronizes with the control channel of the base station in the large wireless zone while the first transmitting / receiving means 22 is in communication with the base station in the small wireless zone.
【００２３】一方、速度検出手段２１によって検出中の
移動速度が基準値を越えた場合、送信制御手段２０ｂの
制御によって、無通話状態の第２送受信手段２３が大無
線ゾーンの基地局の制御チャネルで通話接続要求信号を
送信する。On the other hand, when the moving speed being detected by the speed detecting means 21 exceeds the reference value, the second transmitting / receiving means 23 in the non-communication state is controlled by the transmission control means 20b so as to control the control channel of the base station in the large wireless zone. To send a call connection request signal.
【００２４】この送信によって通話チャネルが設定され
ると、設定された通話チャネルに切り替えて通話を継続
する。即ち、同期を取り通話チャネルを設定した後に小
無線ゾーンから大無線ゾーンの基地局への通話チャネル
切り替えを行うので、チャネル切り替えを瞬断無く行う
ことが可能となる。When the call channel is set by this transmission, the call is switched to the set call channel to continue the call. That is, since the communication channel is switched from the small wireless zone to the base station in the large wireless zone after the synchronization is established and the communication channel is set, the channel can be switched without interruption.
【００２５】[0025]
【実施例】以下、図面を参照して本発明の実施例につい
て説明する。図２は本発明の第１実施例の多重無線ゾー
ン移動通信方式による移動局のブロック構成図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a block diagram of a mobile station according to the multiple wireless zone mobile communication system of the first embodiment of the present invention.
【００２６】図２に示す自動車電話機又は携帯電話機等
の移動局１１は、通信先の小無線ゾーン基地局（図示せ
ず）との通信距離、及び大無線ゾーン基地局（図示せ
ず）との通信距離の差異により生じる伝搬遅延差を独自
に補正し、この補正により瞬断無くチャネル切り替えを
行えるようにしたものである。The mobile station 11 such as a car phone or a mobile phone shown in FIG. 2 has a communication distance with a small wireless zone base station (not shown) as a communication destination and a large wireless zone base station (not shown). Propagation delay difference caused by the difference in communication distance is independently corrected, and this correction enables channel switching without interruption.
【００２７】図２において、１２はアンテナ、１３は合
分波器、１４は第１合波器、１５は第１送信機、１６は
第１受信機、１７は第２合波器、１８は第２送信機、１
９は第２受信機、２０は制御部、２１は速度検出部であ
る。In FIG. 2, 12 is an antenna, 13 is a multiplexer / demultiplexer, 14 is a first multiplexer, 15 is a first transmitter, 16 is a first receiver, 17 is a second multiplexer, and 18 is Second transmitter, 1
Reference numeral 9 is a second receiver, 20 is a control unit, and 21 is a speed detection unit.
【００２８】第１合波器１４、第１送信機１５、及び第
１受信機１６で第１送受信手段２２が構成され、第２合
波器１７、第２送信機１８、及び第２受信機１９で第２
送受信手段２３が構成されている。The first multiplexer, the first transmitter 15, and the first receiver 16 constitute the first transmitting / receiving means 22, and the second multiplexer 17, the second transmitter 18, and the second receiver. Second at 19
The transmitting / receiving means 23 is configured.
【００２９】速度検出部２１は、移動局１１の移動速度
を検出するものである。制御部２０は、一方の送受信手
段（例えば２２）が小無線ゾーン基地局と通話中に、他
方の送受信手段２３が大無線ゾーン基地局の制御チャネ
ルに同期を取るように制御する。The speed detecting section 21 detects the moving speed of the mobile station 11. The control unit 20 controls so that one transmitting / receiving unit (for example, 22) is in communication with the small wireless zone base station and the other transmitting / receiving unit 23 synchronizes with the control channel of the large wireless zone base station.
【００３０】また、制御部２０は、速度検出部２１で検
出された移動速度を常時検出しており、移動速度が基準
値を越えた場合に、大無線ゾーン基地局への切り替えが
必要であると判断する。The control unit 20 constantly detects the moving speed detected by the speed detecting unit 21, and when the moving speed exceeds the reference value, it is necessary to switch to the large wireless zone base station. To judge.
【００３１】この判断が行われた場合に、無通話状態の
送受信手段２３を用いて、大無線ゾーン基地局の制御チ
ャネルで通話接続要求信号を送信する制御を行う。そし
て、通話チャネルが設定された後に、送受信手段を２２
から２３へ切り替える制御を行うものである。When this determination is made, control for transmitting the call connection request signal through the control channel of the large wireless zone base station is performed using the transmitting / receiving means 23 in the non-call state. Then, after the call channel is set, the transmitting / receiving means 22
The control for switching from 23 to 23 is performed.
【００３２】このような構成において小無線ゾーン基地
局から大無線ゾーン基地局へのチャネル切り替え動作を
説明する。いま例えば移動局１１が停止中に小無線ゾー
ン基地局を介して相手側移動局と通話を行っているとす
る。A channel switching operation from the small wireless zone base station to the large wireless zone base station in such a configuration will be described. Now, for example, it is assumed that the mobile station 11 is talking to the mobile station on the partner side via the small radio zone base station while the mobile station 11 is stopped.
【００３３】この場合、小無線ゾーン基地局から移動局
１１へ送られてくる電波信号はアンテナ１２で受信さ
れ、合分波器１３で分波される。ここで第１送受信手段
２２が通話に用いられているとすると、分波された一方
の信号は第１合波器１４を介して第１受信機１６で受信
されている。In this case, the radio signal sent from the small radio zone base station to the mobile station 11 is received by the antenna 12 and demultiplexed by the multiplexer / demultiplexer 13. If the first transmitting / receiving means 22 is used for a telephone call, one of the demultiplexed signals is received by the first receiver 16 via the first multiplexer 14.
【００３４】この時、制御部２０は、無通話状態の第２
送受信手段２３が大無線ゾーン基地局からの制御チャネ
ルを受信し、それに同期を取るように制御している。制
御チャネルは、アンテナ１２、合分波器１３、第２合波
器１７を介して第２受信機１９で受信されている。At this time, the control unit 20 controls the second call in the non-call state.
The transmitting / receiving means 23 receives the control channel from the large wireless zone base station and controls so as to synchronize with it. The control channel is received by the second receiver 19 via the antenna 12, the multiplexer / demultiplexer 13, and the second multiplexer 17.
【００３５】ここで、移動局１１が移動しはじめたとす
ると、速度検出部２１によって移動速度が検出される。
検出された移動速度は、信号に変換されて制御部２０へ
送出され、基準値と比較されている。When the mobile station 11 starts to move, the speed detecting section 21 detects the moving speed.
The detected moving speed is converted into a signal and sent to the control unit 20 and compared with a reference value.
【００３６】移動速度が基準値を越えたとすると、制御
部２０は、大無線ゾーン基地局への切り替えが必要であ
ると判断し、無通話状態の第２送受信手段２３を用い
て、大無線ゾーン基地局の制御チャネルで通話接続要求
信号を送信する制御を行う。When the moving speed exceeds the reference value, the control unit 20 determines that it is necessary to switch to the large wireless zone base station, and uses the second transmitting / receiving means 23 in the non-call state to use the large wireless zone. Control is performed to transmit a call connection request signal on the control channel of the base station.
【００３７】これによって通話チャネルが設定される
と、制御部２０の制御によって、第１送受信手段２２か
ら第２送受信手段２３へ通話手段が切り替えられ、第２
送受信手段２３が大無線ゾーン基地局を介して今まで第
１送受信手段２２が通話を行っていた相手側移動局と通
話を行う。When the call channel is set by this, the call means is switched from the first transmitting / receiving means 22 to the second transmitting / receiving means 23 under the control of the control unit 20, and the second call
The transmission / reception means 23 makes a call via the large wireless zone base station with the mobile station on the other side to which the first transmission / reception means 22 has been making a call.
【００３８】以上説明した第１実施例によれば、移動局
１１が小無線ゾーン基地局との通話中に、大無線ゾーン
基地局と通話を行うための制御チャネルと同期を取って
いるので、大無線ゾーン基地局へのチャネル切り替えを
瞬時に行うことができるので、従来のようにチャネル切
り替えに時間がかかり瞬断するといったことがなくな
る。According to the first embodiment described above, the mobile station 11 synchronizes with the control channel for making a call with the large radio zone base station during the call with the small radio zone base station. Since the channel can be switched to the large wireless zone base station in an instant, the channel switching takes a long time and there is no momentary interruption unlike the conventional case.
【００３９】次に、第２実施例を図３及び図４を参照し
て説明する。図３は本発明の第２実施例の多重無線ゾー
ン移動通信方式による移動局のブロック構成図、図４は
本発明の第２実施例の多重無線ゾーン移動通信方式によ
る小無線ゾーン基地局のブロック構成図である。Next, a second embodiment will be described with reference to FIGS. 3 and 4. FIG. 3 is a block diagram of a mobile station according to the multiple wireless zone mobile communication system of the second embodiment of the present invention, and FIG. 4 is a block of a small wireless zone base station according to the multiple wireless zone mobile communication system of the second embodiment of the present invention. It is a block diagram.
【００４０】図３に示す移動局３１は、アンテナ３２
と、合分波器３３と、送信機３４と、受信機３５と、メ
モリ部３６を有する制御部３７と、速度検出部３８を具
備して構成されている。The mobile station 31 shown in FIG.
A multiplexer / demultiplexer 33, a transmitter 34, a receiver 35, a control unit 37 having a memory unit 36, and a speed detection unit 38.
【００４１】図４に示す小無線ゾーン基地局４１は、ア
ンテナ４２と、合分波器４３と、受信機４４と、送信機
４５と、同期部４６、報知部４８及びメモリ部４９を有
する制御部４７とを具備して構成されている。The small radio zone base station 41 shown in FIG. 4 has an antenna 42, a multiplexer / demultiplexer 43, a receiver 44, a transmitter 45, a synchronization section 46, a notification section 48 and a memory section 49. And a section 47.
【００４２】小無線ゾーン基地局４１の同期部４６は、
図示せぬ大無線ゾーン基地局から送られてくる制御信号
を、アンテナ４２、合分波器４３及び受信機４４を介し
て受け取り、自己が移動局３１へ送信している制御信号
の送信タイミングと同期を取るものである。The synchronization unit 46 of the small radio zone base station 41 is
A control signal transmitted from a large radio zone base station (not shown) is received via the antenna 42, the multiplexer / demultiplexer 43, and the receiver 44, and the transmission timing of the control signal transmitted to the mobile station 31 by itself. It is to synchronize.
【００４３】即ち、ダウンリンク（下り回線）における
小無線ゾーン基地局４１と、大無線ゾーン基地局との送
信タイミングを同期させる。次に、制御部４７によっ
て、移動局３１から大無線ゾーン基地局まので伝搬遅延
時間と、移動局３１から小無線ゾーン基地局４１までの
伝搬遅延時間との差、即ち双方のアップリンク（上り回
線）の伝搬遅延時間の差を算出する。That is, the transmission timings of the small radio zone base station 41 and the large radio zone base station in the downlink (downlink) are synchronized. Next, by the control unit 47, the difference between the propagation delay time from the mobile station 31 to the large wireless zone base station and the propagation delay time from the mobile station 31 to the small wireless zone base station 41, that is, both uplink (uplink) Calculate the difference in the propagation delay time of the line).
【００４４】これは、先の同期した双方基地局の制御信
号と、メモリ部４９に予め記憶された大無線ゾーン基地
局及び小無線ゾーン基地局４１間の距離情報とを用いて
行う。また、伝搬遅延時間差はメモリ部４９に記憶され
る。This is performed using the previously synchronized control signals of both base stations and the distance information between the large wireless zone base station and the small wireless zone base station 41 stored in advance in the memory section 49. Further, the propagation delay time difference is stored in the memory unit 49.
【００４５】メモリ部４９に記憶された伝搬遅延時間差
は、報知部４８の制御によって移動局３１へ送信され
る。即ち一定間隔で小無線ゾーン基地局４１から送信さ
れる報知信号に多重化される。The propagation delay time difference stored in the memory unit 49 is transmitted to the mobile station 31 under the control of the notification unit 48. That is, it is multiplexed with the notification signal transmitted from the small wireless zone base station 41 at regular intervals.
【００４６】移動局３１は伝搬遅延時間差を受信して、
メモリ部３６に記憶する。移動局３１が基準速度を越え
た場合、小無線ゾーンから大無線ゾーンへの切替えが行
われる。The mobile station 31 receives the propagation delay time difference,
It is stored in the memory unit 36. When the mobile station 31 exceeds the reference speed, the small wireless zone is switched to the large wireless zone.
【００４７】これは、制御部３７が速度検出部２１で検
出された移動速度を常時検出しており、移動速度が基準
値を越えた場合に、大無線ゾーン基地局への切り替えが
必要であると判断する。This is because the control unit 37 constantly detects the moving speed detected by the speed detecting unit 21, and when the moving speed exceeds the reference value, it is necessary to switch to the large radio zone base station. To judge.
【００４８】そして、その判断が行われた場合に、制御
部３７がメモリ部３６に記憶された伝搬遅延時間差に基
づいて大無線ゾーン基地局との通話を行うための補正を
実施する。そして、切替えを実行する。When the determination is made, the control unit 37 performs correction for making a call with the large radio zone base station based on the propagation delay time difference stored in the memory unit 36. Then, switching is executed.
【００４９】以上説明した第２実施例においても第１実
施例同様の効果を得ることができる。In the second embodiment described above, the same effect as in the first embodiment can be obtained.
【００５０】[0050]
【発明の効果】以上説明したように、本発明の多重無線
ゾーン移動通信方式によれば、ＴＤＭＡ方式での通信中
に移動局が小無線ゾーンから大無線ゾーンへチャネル切
り替えを行う際に、瞬断無く行うことができる効果があ
る。As described above, according to the multiple wireless zone mobile communication system of the present invention, when the mobile station switches the channel from the small wireless zone to the large wireless zone during communication in the TDMA system, There is an effect that can be performed without permission.
【図１】本発明の原理図である。FIG. 1 is a principle diagram of the present invention.
【図２】本発明の第１実施例の多重無線ゾーン移動通信
方式による移動局のブロック構成図である。FIG. 2 is a block configuration diagram of a mobile station according to the multiple wireless zone mobile communication system of the first embodiment of the present invention.
【図３】本発明の第２実施例の多重無線ゾーン移動通信
方式による移動局のブロック構成図である。FIG. 3 is a block diagram of a mobile station according to a multiple wireless zone mobile communication system of a second embodiment of the present invention.
【図４】本発明の第２実施例の多重無線ゾーン移動通信
方式による小無線ゾーン基地局のブロック構成図であ
る。FIG. 4 is a block configuration diagram of a small wireless zone base station according to a multiple wireless zone mobile communication system of a second embodiment of the present invention.
【図５】多重無線ゾーンを説明するための図である。FIG. 5 is a diagram for explaining multiple wireless zones.
２０ａ 同期制御手段 ２０ｂ 送信制御手段 ２０ｃ 切替制御手段 ２１ 速度検出手段 ２２ 第１送受信手段 ２３ 第２送受信手段 20a Synchronous control means 20b Transmission control means 20c Switching control means 21 Speed detection means 22 First transmission / reception means 23 Second transmission / reception means
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 7304−5Ｋ Ｈ０４Ｑ 7/04 Ｋ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location 7304-5K H04Q 7/04 K
Claims (2)
ンに分割し、この分割された小無線ゾーンの全てを包括
する大無線ゾーンを形成し、移動局が時分割多元接続方
式にて小無線ゾーンの基地局及び大無線ゾーンの基地局
の何れかと通話する多重無線ゾーン移動通信方式におい
て、 前記移動局を、 前記小無線ゾーン及び大無線ゾーンの基地局と通信を行
う第１及び第２送受信手段(22,23) と、 自己移動局の移動速度を検出する速度検出手段(21)と、 第１及び第２送受信手段(22,23) の一方( 例えば22) が
該小無線ゾーンの基地局と通話中に他方(23)が該大無線
ゾーンの基地局の制御チャネルに同期を取るように制御
する同期制御手段(20a) と、 該移動速度が基準値を越えた場合に無通話状態の送受信
手段(23)を用い、該同期制御手段(20a) により同期の取
られた該大無線ゾーンの基地局の制御チャネルで通話接
続要求信号を送信する制御を行う送信制御手段(20b)
と、 該通話接続要求信号の送信によって通話チャネルが設定
された後に、該通話チャネルに切り替えて通話を継続す
る制御を行う切替制御手段(20c) とを具備して構成した
ことを特徴とする多重無線ゾーン移動通信方式。1. A communication service area is divided into a plurality of small wireless zones, a large wireless zone covering all of the divided small wireless zones is formed, and a mobile station uses the time division multiple access method to form the small wireless zone. In the multiple wireless zone mobile communication system for making a call with any one of the base station of the wireless base station and the base station of the large wireless zone, first and second transmitting / receiving means for communicating the mobile station with the base stations of the small wireless zone and the large wireless zone. (22,23), speed detecting means (21) for detecting the moving speed of the own mobile station, and one (eg, 22) of the first and second transmitting / receiving means (22,23) is a base station in the small radio zone. During the call, the other (23) controls so that the other (23) synchronizes with the control channel of the base station in the large radio zone, and the synchronization control means (20a), and when the moving speed exceeds the reference value The transmission / reception means (23) is used, and the synchronization control means (20a) is used for synchronization. Transmission control means (20b) for controlling transmission of a call connection request signal on the control channel of the base station of the large radio zone
And a switching control means (20c) for controlling to continue the call by switching to the call channel after the call channel is set by the transmission of the call connection request signal. Wireless zone mobile communication system.
ンに分割し、この分割された小無線ゾーンの全てを包括
する大無線ゾーンを形成し、移動局が時分割多元接続方
式にて小無線ゾーンの基地局及び大無線ゾーンの基地局
の何れかと通話する多重無線ゾーン移動通信方式におい
て、 前記小無線ゾーンの基地局を、 下り回線における該小無線ゾーンの基地局との送信タイ
ミングを前記大無線ゾーンの基地局の送信タイミングに
同期させる同期手段(46)と、 該同期手段(46)により同期された下り回線の信号と、該
距離情報とから上り回線における前記移動局から該小無
線ゾーンの基地局と該大無線ゾーンの基地局との伝搬遅
延時間差を算出する制御手段(47)と、 該大無線ゾーンの基地局と該小無線ゾーンの基地局間の
距離情報と該伝搬遅延時間差とを記憶する第１記憶手段
(49)と、 該伝搬遅延時間差を該移動局へ報知する報知手段(48)と
を具備して構成し、 該移動局を、 該伝搬遅延時間差を記憶する第２記憶手段(36)と、 該移動局が該小無線ゾーンの基地局と通話中に基準速度
を越えた場合、該第２記憶手段(36)に記憶された伝搬遅
延時間差に応じて、該大無線ゾーンの基地局との通話チ
ャネル切り替えの補正を行う制御手段(37)とを具備して
構成したことを特徴とする多重無線ゾーン移動通信方
式。2. A communication service area is divided into a plurality of small wireless zones, a large wireless zone covering all of the divided small wireless zones is formed, and a mobile station uses the time division multiple access method to form the small wireless zone. In the multiple wireless zone mobile communication system for making a call with any one of the base station of the small wireless zone and the base station of the large wireless zone, the transmission timing of the base station of the small wireless zone to the base station of the small wireless zone in the downlink The synchronization means (46) for synchronizing the transmission timing of the base station of the zone, the downlink signal synchronized by the synchronization means (46), and the distance information from the mobile station in the uplink to the small radio zone. Control means (47) for calculating a propagation delay time difference between the base station and the base station in the large radio zone, distance information between the base station in the large radio zone and the base station in the small radio zone, and the propagation delay time difference First storage means for storing
(49) and notifying means (48) for notifying the mobile station of the propagation delay time difference, and the mobile station is provided with a second storage means (36) for storing the propagation delay time difference, When the mobile station exceeds the reference speed during a call with the base station in the small radio zone, the mobile station is connected to the base station in the large radio zone according to the propagation delay time difference stored in the second storage means (36). A multi-radio zone mobile communication system characterized by comprising a control means (37) for correcting communication channel switching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20736293A JP3328385B2 (en) | 1993-08-23 | 1993-08-23 | Multiple wireless zone mobile communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20736293A JP3328385B2 (en) | 1993-08-23 | 1993-08-23 | Multiple wireless zone mobile communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0767165A true JPH0767165A (en) | 1995-03-10 |
| JP3328385B2 JP3328385B2 (en) | 2002-09-24 |
Family
ID=16538483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20736293A Expired - Fee Related JP3328385B2 (en) | 1993-08-23 | 1993-08-23 | Multiple wireless zone mobile communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3328385B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995034962A1 (en) * | 1994-06-10 | 1995-12-21 | Ntt Mobile Communications Network Inc. | Receiver |
| US6278881B1 (en) | 1997-06-30 | 2001-08-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Mobile communications system |
-
1993
- 1993-08-23 JP JP20736293A patent/JP3328385B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995034962A1 (en) * | 1994-06-10 | 1995-12-21 | Ntt Mobile Communications Network Inc. | Receiver |
| US5760702A (en) * | 1994-06-10 | 1998-06-02 | Nit Mobile Communications Network Inc. | Receiver with symbol rate sync |
| US6278881B1 (en) | 1997-06-30 | 2001-08-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Mobile communications system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3328385B2 (en) | 2002-09-24 |
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