JPH06261368A - Channel busy alarm system - Google Patents

Channel busy alarm system

Info

Publication number
JPH06261368A
JPH06261368A JP5047601A JP4760193A JPH06261368A JP H06261368 A JPH06261368 A JP H06261368A JP 5047601 A JP5047601 A JP 5047601A JP 4760193 A JP4760193 A JP 4760193A JP H06261368 A JPH06261368 A JP H06261368A
Authority
JP
Japan
Prior art keywords
base station
channel
radio base
station
radio
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.)
Withdrawn
Application number
JP5047601A
Other languages
Japanese (ja)
Inventor
Yoshimitsu Hamazaki
芳光 濱崎
Akishige Noda
昭繁 野田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP5047601A priority Critical patent/JPH06261368A/en
Publication of JPH06261368A publication Critical patent/JPH06261368A/en
Withdrawn legal-status Critical Current

Links

Abstract

PURPOSE:To previously give an alarm before a zone is changed when the channel of a channel switching destination radio base station is full blocked on the channel busy alarm system of moving radio communication. CONSTITUTION:A level judgement means 4 is provided for a moving machine terminal 3, and a radio communication level with an adjacent radio base station 11 is judged. If a value reaches a channel switching start level for the adjacent radio base station 12 as the result of level judgement when the moving machine terminal 3 moves from the zone of the radio base station 11 to the zone of the adjacent radio base station 12, the channel use situation inquiry of the adjacent radio base station 12 is transmitted from the moving machine terminal 3 to a radio control station 2 through the former radio base station 11. Furthermore, a use situation judgement means 5 is provided for the radio control station 2, the channel idle/block situation of the respective radio base stations 11, 12,... is judged. When the channel of the adjacent radio base station 12 is full blocked as the result of judgement at the inquiry time of the moving machine terminal 3, a signal indicating the alarm is transmitted to the moving machine terminal 3 through the radio base station 11.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、移動無線通信において
チャネルビジーを警告する方式に関し、特にゾーン変更
に基づくチャネル切り替え時の、移動機端末に対するチ
ャネルビジー警告方式に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a channel busy warning system in mobile radio communication, and more particularly to a channel busy warning system for a mobile terminal at the time of channel switching based on zone change.

【0002】携帯電話や自動車電話等の移動無線システ
ムにおいては、無線基地局ごとに固有の通信ゾーンを有
し、移動機端末が旧無線基地局のゾーンから隣接する新
無線基地局のゾーンへ移動する際には、旧無線基地局の
通信チャネルから新無線基地局の通信チャネルに切り替
えることが必要になる。
In mobile radio systems such as mobile phones and car phones, each radio base station has its own communication zone, and a mobile terminal moves from an old radio base station zone to an adjacent new radio base station zone. In doing so, it is necessary to switch from the communication channel of the old wireless base station to the communication channel of the new wireless base station.

【0003】ゾーン変更に基づくチャネル切り替えを行
おうとする際に、切り替え先の新無線基地局のチャネル
が全塞であった場合には、新無線基地局のゾーンに移動
しても通信を行うことができないので、ゾーン変更前
に、予めチャネルビジーの警告を行えるようにすること
が要望される。
When attempting to switch channels based on zone change, if the channel of the new wireless base station to be switched to is completely blocked, communication is performed even if the channel moves to the new wireless base station zone. Therefore, it is required to give a warning of channel busy in advance before changing the zone.

【0004】[0004]

【従来の技術】図6は、従来のチャネル切替方式におけ
る、無線基地局ゾーンと無線通信レベルとを示したもの
である。図において、旧無線基地局ゾーンに在圏する移
動機端末の移動に伴って、で示す隣接する新無線基地
局ゾーンの無線通信レベルが、A点において、チャネル
切り替えを起動することが可能な、チャネル切替起動レ
ベル(α)以上の値となるが、さらに移動してで示す
旧無線基地局ゾーンの無線通信レベルがB点においてチ
ャネル切替起動レベル(α)まで低下したときは、新無
線基地局のチャネルに対するチャネル切り替えが起動さ
れる。
2. Description of the Related Art FIG. 6 shows a wireless base station zone and a wireless communication level in a conventional channel switching system. In the figure, with the movement of the mobile terminal existing in the old radio base station zone, the radio communication level of the adjacent new radio base station zone indicated by can start channel switching at point A, The value is equal to or higher than the channel switching activation level (α), but when the wireless communication level of the old wireless base station zone indicated by moving further decreases to the channel switching activation level (α) at point B, the new wireless base station Channel switching is started for the channel.

【0005】これによって、移動機端末は旧無線基地局
のチャネルから新無線基地局のチャネルに移行して、新
無線基地局を介して通信を継続することができる。なお
ここで、旧無線基地局とは、チャネル切り替え前の無線
基地局を指し、新無線基地局とは、チャネル切り替え先
の無線基地局を指すものとする。
As a result, the mobile terminal can shift from the channel of the old radio base station to the channel of the new radio base station and continue communication via the new radio base station. Here, the old radio base station means the radio base station before the channel switching, and the new radio base station means the radio base station at the channel switching destination.

【0006】[0006]

【発明が解決しようとする課題】この場合、新無線基地
局ゾーンに移動しても、新無線基地局のチャネルが全塞
であった場合には、通信を行うことができず、移動機端
末はチャネル切り替えを起動したのちに、呼を切断され
てしまうという問題がある。
In this case, even if the user moves to the new wireless base station zone, if the channel of the new wireless base station is completely blocked, communication cannot be performed and the mobile terminal Has a problem that the call is disconnected after activating channel switching.

【0007】本発明は、このような従来技術の課題を解
決しようとするものであって、移動無線通信における、
ゾーン変更に基づくチャネル切り替え時に、チャネル切
り替え先である新無線基地局のチャネルが全塞であった
場合には、ゾーン変更前に予めチャネルビジーの警告を
行えるようにすることを目的としている。
[0007] The present invention is intended to solve the above problems of the prior art, and in mobile radio communication,
An object of the present invention is to make it possible to give a warning of channel busy before the zone change when the channel of the new radio base station which is the channel change destination is completely blocked at the time of the channel change based on the zone change.

【0008】このようにすることによって、移動機端末
の加入者は、チャネル切り替えが不可能なことを予め知
ることができるので、旧無線基地局ゾーンに留まる等の
処置を行うことによって、呼切断を回避して通信を続行
することができる。
By doing so, the subscriber of the mobile terminal can know in advance that channel switching is not possible. Therefore, by taking measures such as staying in the old radio base station zone, the call disconnection can be performed. Can be avoided and communication can be continued.

【0009】[0009]

【課題を解決するための手段】(1) 図1は本発明の原理
的構成を示したものである。本発明は、複数の無線基地
局11 ,12 ,…が無線制御局2の制御のもとにそれぞ
れのゾーンにおいて移動機端末3との間でそれぞれ異な
るチャネルによって通信を行う無線通信システムにおい
て、移動機端末3にレベル判定手段4を設けて、隣接す
る無線基地局1 2 との間の無線通信レベルを判定する。
そして、移動機端末3が現に在圏する無線基地局11
ゾーンから隣接無線基地局12 のゾーンに移動しようと
する際に、レベル判定結果、隣接無線基地局12 へのチ
ャネル切り替えを起動すべき所定レベルに達したとき、
移動機端末3から隣接無線基地局12 におけるチャネル
の空塞状況を問い合わせるチャネル使用状況問い合わせ
を現に在圏する無線基地局11 を介して無線制御局2へ
送信する。さらに、無線制御局2に使用状況判定手段5
を設けて、各無線基地局11 ,12 ,…におけるチャネ
ルの空塞状況を判定する。そして、移動機端末3の問い
合わせ時、判定の結果、隣接無線基地局12におけるチ
ャネルが全塞の場合は、移動機端末3に対してチャネル
ビジーの警告を指示する信号を現に在圏する無線基地局
1 を介して送信するものである。
[Means for Solving the Problems] (1) FIG. 1 shows the principle of the present invention.
It shows the physical composition. The present invention is directed to multiple radio bases.
Station 11 , 12 , ... are under the control of the radio control station 2.
In each of these zones, there is a difference with the mobile terminal 3.
In a wireless communication system that communicates by
The mobile terminal 3 is provided with the level determination means 4 and
Wireless base station 1 2 The wireless communication level between and is determined.
Then, the radio base station 1 in which the mobile terminal 3 is currently located1 of
Zone to adjacent radio base station 12 Trying to move to the zone
When performing the level determination result, the adjacent radio base station 12 To
When the predetermined level to activate the channel switching is reached,
Mobile terminal 3 to adjacent radio base station 12 Channels in
Inquire about the availability of the channel Inquire about channel usage
Wireless base station 11 To the radio control station 2 via
Send. Further, the wireless control station 2 is provided with the usage status determining means 5
Is provided for each radio base station 11 , 12 Channel in
Determine the air-blocking status of Le. And the question of mobile terminal 3
At the time of matching, as a result of the judgment, the adjacent radio base station 12In
When the channel is fully blocked, the channel is sent to the mobile terminal 3.
A radio base station that is currently locating a signal indicating a busy warning
11 Is to be sent via.

【0010】(2) また本発明は、複数の無線基地局1
1 ,12 ,…が無線制御局2の制御のもとにそれぞれの
ゾーンにおいて移動機端末3との間でそれぞれ異なるチ
ャネルによって通信を行う無線通信システムにおいて、
無線制御局2に使用状況判定手段5を設けて、各無線基
地局11 ,12 ,…におけるチャネルの空塞状況を一定
周期で判定する。そして、チャネル全塞の無線基地局が
あったときは、その無線基地局に隣接する各無線基地局
と通信している全移動機端末3に対して、それぞれの無
線基地局を介してチャネルビジーの警告を指示する信号
を送信するものである。
(2) The present invention also provides a plurality of radio base stations 1.
In the wireless communication system in which 1 , 1, 2 ... Communicate with the mobile terminal 3 in each zone under the control of the wireless control station 2 through different channels,
The wireless control station 2 is provided with a usage status determination means 5 to determine the availability of channels in each of the wireless base stations 1 1 , 1 2 , ... Then, when there is a wireless base station with all channels blocked, the channel busy is transmitted to each mobile terminal 3 communicating with each wireless base station adjacent to the wireless base station via each wireless base station. The signal for instructing the warning is transmitted.

【0011】(3) また本発明は、複数の無線基地局1
1 ,12 ,…が無線制御局2の制御のもとにそれぞれの
ゾーンにおいて移動機端末3との間でそれぞれ異なるチ
ャネルによって通信を行う無線通信システムにおいて、
無線制御局2に使用状況判定手段5を設けて、各無線基
地局11 ,12 ,…におけるチャネルの空塞状況を一定
周期で判定するとともに、加入者データ6にチャネルビ
ジーの警告サービスの契約を登録する。そして、チャネ
ル全塞の無線基地局があったときは、その無線基地局に
隣接する各無線基地局と通信している移動機端末のう
ち、警告サービスの契約に基づく登録を行った移動機端
末3に対して、その移動機端末が現に在圏するゾーンの
無線基地局を介してチャネルビジーの警告を指示する信
号を送信するものである。
(3) The present invention also provides a plurality of radio base stations 1.
In the wireless communication system in which 1 , 1, 2 ... Communicate with the mobile terminal 3 in each zone under the control of the wireless control station 2 through different channels,
The radio control station 2 is provided with a usage status judging means 5 for judging the channel open / close status in each of the radio base stations 1 1 , 1 2 , ... Register the contract. Then, when there is a wireless base station with all channels blocked, of the mobile terminal communicating with each wireless base station adjacent to the wireless base station, the mobile terminal that has registered under the warning service contract. The mobile station terminal 3 transmits a signal instructing a warning of channel busy to the mobile station terminal 3 via the radio base station in the zone where the mobile station is currently located.

【0012】[0012]

【作用】移動局端末において、新無線基地局へのゾーン
変更に基づくチャネル切り替えを行おうするとき、新無
線基地局の無線通信レベルが、チャネル切り替えを起動
することが可能な所定のレベル(チャネル切り替え起動
レベル)に達したとき、現に在圏する旧無線基地局経由
で無線制御局に対して、チャネル切り替え先の新無線基
地局におけるチャネルの空塞状況を問い合わせる、チャ
ネル使用状況問い合わせ信号を送信する。無線制御局で
は、新無線基地局のチャネルが全塞である場合、その移
動機端末に対して、チャネルビジーの警告を指示する信
号(警報指示信号)を送信する。
In the mobile station terminal, when performing channel switching based on the zone change to the new wireless base station, the wireless communication level of the new wireless base station is a predetermined level (channel When the switch activation level) is reached, a channel usage status inquiry signal is sent to the radio control station via the old radio base station that is currently in the area to inquire about the availability of the channel in the new radio base station to which the channel is switched. To do. When the channel of the new radio base station is completely blocked, the radio control station transmits a signal (warning instruction signal) for instructing a warning of channel busy to the mobile terminal.

【0013】従って本発明方式によれば、移動機端末の
加入者は、チャネル切り替え先の無線基地局のチャネル
が全塞であった場合には、チャネル切り替えが不可能な
ことを予め知ることができるので、切り替え先の無線基
地局のチャネルビジーに基づく呼切断を回避する処置を
行うことによって、通信を続行することができる。
Therefore, according to the method of the present invention, the subscriber of the mobile terminal can know in advance that the channel cannot be switched when the channel of the radio base station to which the channel is switched is completely blocked. Therefore, the communication can be continued by taking a measure for avoiding the call disconnection based on the channel busy of the wireless base station of the switching destination.

【0014】別の方法として、無線制御局が各無線基地
局のチャネル使用状況を監視して、チャネル全塞の無線
基地局がある場合には、その無線基地局に隣接する無線
基地局との間で通信を行っている全移動機端末に対し
て、予め警報指示信号を送信するようにしてもよい。
As another method, the radio control station monitors the channel use status of each radio base station, and if there is a radio base station with all the channels, the radio base station and the radio base station adjacent to the radio base station are An alarm instruction signal may be transmitted in advance to all mobile terminal units communicating with each other.

【0015】または、無線制御局が各無線基地局のチャ
ネル使用状況を監視して、チャネル全塞の無線基地局が
ある場合には、その無線基地局に隣接する無線基地局と
の間で通信を行っている移動機端末のうち、予め加入者
データ登録時に、警告サービスを契約した端末に対して
のみ、警報指示信号を送信するようにしてもよい。
Alternatively, the radio control station monitors the channel use status of each radio base station, and if there is a radio base station with all the channels, communication is performed with a radio base station adjacent to the radio base station. The alarm instruction signal may be transmitted only to the terminal that has subscribed to the warning service when the subscriber data is registered in advance among the mobile terminal performing the above.

【0016】[0016]

【実施例】図2は、本発明の一実施例におけるチャネル
使用状況問い合わせと、警報指示のシーケンスを示した
ものであって、図中、11は移動機端末、12は旧無線
基地局、13は無線制御局をそれぞれ示している。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 shows a sequence of channel usage status inquiry and alarm instruction according to an embodiment of the present invention, in which 11 is a mobile terminal, 12 is an old radio base station, and 13 is a radio base station. Indicate radio control stations, respectively.

【0017】図3は、本発明方式における無線基地局ゾ
ーンと無線通信レベルとを示したものである。本発明方
式においては、無線基地局と移動機端末との間における
無線通信レベルに、従来のチャネル切替起動レベル
(α)以外に、新無線基地局におけるチャネルの空塞状
況を問い合わせる、チャネル使用状況問い合わせ起動レ
ベル(β)を設定する。以下、図2および図3に基づい
て、本発明方式の動作を説明する。
FIG. 3 shows wireless base station zones and wireless communication levels in the system of the present invention. In the method of the present invention, in addition to the conventional channel switching activation level (α), the wireless communication level between the wireless base station and the mobile terminal is inquired about the availability of the channel in the new wireless base station. Set the inquiry activation level (β). The operation of the method of the present invention will be described below with reference to FIGS.

【0018】いずれかの無線基地局のゾーンに在圏し
て、当該ゾーンの無線基地局(旧無線基地局12)と通
信中の移動機端末11の移動に伴って、で示す隣接す
る新無線基地局ゾーンの無線通信レベルが、A点におい
てチャネル切替起動レベル(α)以上の値となるが、さ
らに移動してC点において、旧無線基地局12との間に
おける無線通信レベルが、チャネル使用状況問い合わせ
起動レベル(β)に達したときは、移動機端末11は、
移動しようとする新無線基地局(チャネル切り替え先無
線基地局)のチャネルの空塞状況を問い合わせる、チャ
ネル使用状況問い合わせ信号を旧無線基地局12経由
で、無線制御局13に対して送信する。
Along with the movement of the mobile terminal 11 existing in the zone of any one of the radio base stations and communicating with the radio base station (old radio base station 12) of the zone, the adjacent new radio indicated by The wireless communication level of the base station zone becomes a value equal to or higher than the channel switching activation level (α) at the point A, but at the point C, the wireless communication level with the old wireless base station 12 is the channel use level. When the status inquiry activation level (β) is reached, the mobile terminal 11
A channel usage status inquiry signal for inquiring about the availability of the channel of the new wireless base station (channel switching destination wireless base station) that is about to move is transmitted to the wireless control station 13 via the old wireless base station 12.

【0019】無線制御局13では、チャネル使用状況問
い合わせ信号を受けたとき、チャネル切り替え先である
新無線基地局のチャネルの使用状況を分析して、新無線
基地局のチャネルが全塞であれば、問い合わせを行った
移動機端末11に対して、旧無線基地局12経由で、チ
ャネルビジーの警告音を鳴動し、またはアラームランプ
を点灯することを指示する警報指示信号を送信する。
When the radio control station 13 receives the channel use state inquiry signal, it analyzes the use state of the channel of the new radio base station to which the channel is switched, and if the channel of the new radio base station is completely blocked. The mobile station terminal 11 that has made an inquiry transmits an alarm instruction signal for instructing to sound a channel busy warning sound or turn on an alarm lamp via the old wireless base station 12.

【0020】これによって、移動機端末11の加入者
は、チャネル切り替えが不可能なことを知って、呼切断
を回避するために必要な処置をとることができる。一
方、新無線基地局のチャネルに空きがあれば、で示す
旧無線基地局12の無線通信レベルがB点においてチャ
ネル切替起動レベル(α)まで低下したとき、新無線基
地局に対するチャネル切り替えが起動される。
As a result, the subscriber of the mobile terminal 11 knows that channel switching is impossible, and can take the necessary measures to avoid the call disconnection. On the other hand, if the channel of the new wireless base station is available, when the wireless communication level of the old wireless base station 12 shown by is lowered to the channel switching activation level (α) at point B, the channel switching to the new wireless base station is activated. To be done.

【0021】図4は、本発明の他の実施例を示したもの
であって、21は無線制御局を示し、22はチャネル切
り替えを行おうとする切り替え先無線基地局、231,
2,…,23n は隣接無線基地局を示している。
FIG. 4 shows another embodiment of the present invention, in which 21 is a radio control station, 22 is a switching destination radio base station for channel switching, and 23 1, 2
32 , ..., 23 n indicate adjacent radio base stations.

【0022】無線制御局21では、一定周期で各無線基
地局のチャネルの空塞状況を監視して、チャネル全塞の
無線基地局があった場合には、その無線基地局に隣接す
るすべての隣接無線基地局231,232,…,23n のゾ
ーンに在圏して通信中の全移動機端末に対して、警報指
示信号を送信する。
The radio control station 21 monitors the channel availability of each radio base station at regular intervals, and if there is a radio base station with full channel coverage, all radio base stations adjacent to that radio base station are monitored. An alarm instruction signal is transmitted to all the mobile station terminals that are in communication in the zones of the adjacent radio base stations 23 1, 23 2, ..., 23 n .

【0023】隣接無線基地局231,232,…,23n
いずれかのゾーンに在圏して、当該ゾーンの無線基地局
(旧無線基地局)と通信中の移動機端末が、切り替え先
無線基地局22のゾーンに移動しようとする場合に、切
り替え先無線基地局22のチャネルが全塞の場合には、
移動機端末の加入者は、警報指示信号に基づくチャネル
ビジーの警報音やアラームランプの点灯によって、チャ
ネル切り替えが不可能なことを予め知ることができるの
で、呼切断を回避するために必要な処置をとることが可
能となる。
A mobile terminal that is in the zone of any of the adjacent radio base stations 23 1, 23 2, ..., 23 n and is communicating with the radio base station (old radio base station) of the zone is switched. When trying to move to the zone of the destination radio base station 22, when the channel of the switching destination radio base station 22 is full block,
The subscriber of the mobile terminal can know in advance that the channel cannot be switched by the warning tone of the channel busy or the lighting of the alarm lamp based on the warning instruction signal. Therefore, necessary measures for avoiding the call disconnection. It becomes possible to take

【0024】図5は、本発明のさらに他の実施例を示し
たものであって、図4におけると同じものを同じ番号で
示し、24は無線制御局21に登録されている加入者デ
ータである。
FIG. 5 shows still another embodiment of the present invention, in which the same components as those in FIG. 4 are designated by the same numbers, and 24 is subscriber data registered in the radio control station 21. is there.

【0025】移動機端末がチャネルビジーの警告サービ
スを契約した場合には、加入者登録時に、予めその旨を
無線制御局21の加入者データ24に登録しておく。無
線制御局21では、一定周期で各無線基地局のチャネル
使用状況を監視して、チャネル全塞の無線基地局があっ
た場合には、加入者データの登録状況を分析して、その
無線基地局に隣接するすべての隣接無線基地局231,
2,…,23n のゾーンに在圏して通信中の移動機端末
のうち、チャネルビジーの警告サービスを登録した移動
機端末に対して、警報指示信号を送信する。
When the mobile terminal subscribes to the channel busy warning service, that effect is registered in advance in the subscriber data 24 of the radio control station 21 when the subscriber is registered. The radio control station 21 monitors the channel use status of each radio base station at regular intervals, and if there is a radio base station that is completely occupied by the channel, analyzes the registration status of the subscriber data and All adjacent radio base stations 23 1, 2 adjacent to the station
A warning instruction signal is transmitted to a mobile terminal that has registered a channel busy warning service among the mobile terminals that are in communication in the zones 32 , ..., 23 n .

【0026】いま、例えば隣接無線基地局231,232,
…,23n のいずれかのゾーンに在圏して、そのゾーン
の無線基地局(旧無線基地局)と通信中の、警告サービ
スの登録を受けた移動機端末が、切り替え先無線基地局
22のゾーンに移動しようとする場合に、切り替え先無
線基地局22のチャネルが全塞の場合には、この移動機
端末の加入者は、警報指示信号に基づくチャネルビジー
の警報音やアラームランプの点灯によって、チャネル切
り替えが不可能なことを予め知ることができるので、呼
切断を回避するために必要な処置をとることが可能とな
る。
Now, for example, the adjacent radio base stations 23 1, 23 2,
, 23 n existing in any zone and communicating with the wireless base station (old wireless base station) in that zone, the mobile terminal registered for the warning service is When the channel of the switching destination wireless base station 22 is fully blocked when moving to the zone of 1, the subscriber of this mobile terminal will turn on the channel busy alarm sound or the alarm lamp based on the alarm instruction signal. By doing so, it is possible to know in advance that channel switching is not possible, so it is possible to take the necessary measures to avoid call disconnection.

【0027】[0027]

【発明の効果】以上説明したように本発明によれば、移
動無線通信においてゾーン変更に基づくチャネル切り替
えを行おうとする際に、チャネル切り替え先の無線基地
局のチャネルが全塞であった場合には、ゾーン変更前に
予めチャネルビジーの警告を行うようにすることができ
る。これによって、移動機端末の加入者は、チャネル切
り替えが不可能なことを予め知ることができるので、も
との無線基地局ゾーンに留まる等の処置を行うことによ
って、呼切断を回避して通信を続行することができる。
As described above, according to the present invention, when the channel switching based on the zone change is performed in the mobile radio communication and the channel of the radio base station to which the channel is switched is completely blocked. The channel busy warning can be issued in advance before the zone change. As a result, the subscriber of the mobile terminal can know in advance that channel switching is not possible. Therefore, by taking measures such as staying in the original radio base station zone, communication can be avoided by avoiding call disconnection. You can continue.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の原理的構成を示す図である。FIG. 1 is a diagram showing a principle configuration of the present invention.

【図2】本発明の一実施例におけるチャネル使用状況問
い合わせと、警報指示のシーケンスを示す図である。
FIG. 2 is a diagram showing a sequence of a channel usage status inquiry and an alarm instruction according to an embodiment of the present invention.

【図3】本発明方式における無線基地局ゾーンと無線通
信レベルとを示す図である。
FIG. 3 is a diagram showing a wireless base station zone and a wireless communication level in the system of the present invention.

【図4】本発明の他の実施例を示す図である。FIG. 4 is a diagram showing another embodiment of the present invention.

【図5】本発明のさらに他の実施例を示す図である。FIG. 5 is a diagram showing still another embodiment of the present invention.

【図6】従来のチャネル切替方式における、無線基地局
ゾーンと無線通信レベルとを示す図である。
FIG. 6 is a diagram showing a wireless base station zone and a wireless communication level in a conventional channel switching system.

【符号の説明】[Explanation of symbols]

1 ,12 ,… 無線基地局 2 無線制御局 3 移動機端末 4 レベル判定手段 5 使用状況判定手段 6 加入者データ1 1 , 1 2 , ... Radio base station 2 Radio control station 3 Mobile terminal 4 Level determination means 5 Usage status determination means 6 Subscriber data

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 複数の無線基地局(11 ,12 ,…)が
無線制御局(2)の制御のもとにそれぞれのゾーンにお
いて移動機端末(3)との間でそれぞれ異なるチャネル
によって通信を行う無線通信システムにおいて、 移動機端末(3)に、隣接する無線基地局(12 )との
間の無線通信レベルを判定するレベル判定手段(4)を
設け、該移動機端末(3)が現に在圏する無線基地局
(11 )のゾーンから該隣接無線基地局(12 )のゾー
ンに移動しようとする際に、該レベル判定結果、隣接無
線基地局(12 )へのチャネル切り替えを起動すべき所
定レベルに達したとき、該移動機端末(3)から隣接無
線基地局(12 )におけるチャネルの空塞状況を問い合
わせるチャネル使用状況問い合わせを現に在圏する無線
基地局(11 )を介して無線制御局(2)へ送信し、 無線制御局(2)に、各無線基地局(11 ,12 ,…)
におけるチャネルの空塞状況を判定する使用状況判定手
段(5)を設け、前記移動機端末(3)の問い合わせ
時、該判定の結果、前記隣接無線基地局(12 )におけ
るチャネルが全塞の場合は、該移動機端末(3)に対し
てチャネルビジーの警告を指示する信号を現に在圏する
無線基地局(11 )を介して送信することを特徴とする
チャネルビジー警告方式。
1. A plurality of radio base stations (1 1 , 1 2 , ...) Under the control of a radio control station (2), in each zone, by different channels from a mobile terminal (3). In a wireless communication system for communication, the mobile terminal (3) is provided with level determination means (4) for determining a wireless communication level with an adjacent wireless base station (1 2 ), and the mobile terminal (3) is provided. ) Is trying to move from the zone of the existing wireless base station (1 1 ) to the zone of the adjacent wireless base station (1 2 ), the level determination result indicates that the adjacent wireless base station (1 2 ) When a predetermined level at which the channel switching should be activated is reached, the mobile station (3) inquires about the channel availability status of the adjacent radio base station (1 2 ) inquiring about the channel availability status. 1: 1) via a non Transmitted to the control station (2), the radio control station (2), each radio base station (1 1, 1 2, ...)
When the mobile terminal (3) is inquired, the use status determination means (5) for determining the channel open / closed status of the channel of the adjacent radio base station (1 2 ) is completely blocked. In this case, the channel busy warning system is characterized in that a signal for instructing the mobile terminal (3) to warn of the channel busy is transmitted via the wireless base station (1 1 ) which is currently in the service area.
【請求項2】 複数の無線基地局(11 ,12 ,…)が
無線制御局(2)の制御のもとにそれぞれのゾーンにお
いて移動機端末(3)との間でそれぞれ異なるチャネル
によって通信を行う無線通信システムにおいて、 該無線制御局(2)に、各無線基地局(11 ,12
…)におけるチャネルの空塞状況を一定周期で判定する
使用状況判定手段(5)を設け、チャネル全塞の無線基
地局があったとき、該無線基地局に隣接する各無線基地
局と通信している全移動機端末(3)に対して、それぞ
れの無線基地局を介してチャネルビジーの警告を指示す
る信号を送信することを特徴とするチャネルビジー警告
方式。
2. A plurality of radio base stations (1 1 , 1 2 , ...) Under the control of the radio control station (2), in different zones by different channels from the mobile terminal (3). In a wireless communication system that performs communication, each wireless base station (1 1 , 1 2 ,
...) is provided with a use status judging means (5) for judging the empty / occluded status of the channel at a constant cycle, and when there is a wireless base station with all the channels, communication is performed with each wireless base station adjacent to the wireless base station. A channel busy warning system characterized in that a signal instructing a warning of channel busy is transmitted to all mobile terminal units (3) that are operating via respective radio base stations.
【請求項3】 複数の無線基地局(11 ,12 ,…)が
無線制御局(2)の制御のもとにそれぞれのゾーンにお
いて移動機端末(3)との間でそれぞれ異なるチャネル
によって通信を行う無線通信システムにおいて、 該無線制御局(2)に、各無線基地局(11 ,12
…)におけるチャネルの空塞状況を一定周期で判定する
使用状況判定手段(5)を設けるとともに、加入者デー
タ(6)にチャネルビジーの警告サービスの契約を登録
し、チャネル全塞の無線基地局があったとき、該無線基
地局に隣接する各無線基地局と通信している移動機端末
のうち前記登録を行った移動機端末(3)に対して、該
移動機端末(3)が現に在圏するゾーンの無線基地局を
介してチャネルビジーの警告を指示する信号を送信する
ことを特徴とするチャネルビジー警告方式。
3. A plurality of radio base stations (1 1 , 1 2 , ...) Under the control of the radio control station (2), in each zone, they use different channels from the mobile terminal (3). In a wireless communication system that performs communication, each wireless base station (1 1 , 1 2 ,
...) is provided with a use status determination means (5) for determining the channel availability status at a fixed cycle, and a contract for the channel busy warning service is registered in the subscriber data (6) to establish a wireless base station for the channel coverage area. When there is, the mobile station terminal (3) is actually connected to the mobile station terminal (3) that has performed the registration among the mobile station terminals communicating with the respective radio base stations adjacent to the radio base station. A channel busy warning system characterized in that a signal for instructing a warning of channel busy is transmitted via a radio base station in the zone in which the mobile station is located.
JP5047601A 1993-03-09 1993-03-09 Channel busy alarm system Withdrawn JPH06261368A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5047601A JPH06261368A (en) 1993-03-09 1993-03-09 Channel busy alarm system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5047601A JPH06261368A (en) 1993-03-09 1993-03-09 Channel busy alarm system

Publications (1)

Publication Number Publication Date
JPH06261368A true JPH06261368A (en) 1994-09-16

Family

ID=12779765

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5047601A Withdrawn JPH06261368A (en) 1993-03-09 1993-03-09 Channel busy alarm system

Country Status (1)

Country Link
JP (1) JPH06261368A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08140139A (en) * 1994-11-11 1996-05-31 Nec Commun Syst Ltd Reconnection type channel switching system
US11229442B2 (en) 2018-03-09 2022-01-25 Merit Medical Systems, Inc. Ultrasound compatible inflatable vascular compression and related systems and methods

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08140139A (en) * 1994-11-11 1996-05-31 Nec Commun Syst Ltd Reconnection type channel switching system
US11229442B2 (en) 2018-03-09 2022-01-25 Merit Medical Systems, Inc. Ultrasound compatible inflatable vascular compression and related systems and methods

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