JPS6292529A - Selecting method for control channel - Google Patents

Selecting method for control channel

Info

Publication number
JPS6292529A
JPS6292529A JP60230001A JP23000185A JPS6292529A JP S6292529 A JPS6292529 A JP S6292529A JP 60230001 A JP60230001 A JP 60230001A JP 23000185 A JP23000185 A JP 23000185A JP S6292529 A JPS6292529 A JP S6292529A
Authority
JP
Japan
Prior art keywords
control channel
incoming
channel
control
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
Application number
JP60230001A
Other languages
Japanese (ja)
Other versions
JPH0331290B2 (en
Inventor
Hiroshi Inaba
洋 稲葉
Kenji Imamura
賢治 今村
Hiromi Yoshida
博美 吉田
Katsumi Kobayashi
勝美 小林
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP60230001A priority Critical patent/JPS6292529A/en
Publication of JPS6292529A publication Critical patent/JPS6292529A/en
Publication of JPH0331290B2 publication Critical patent/JPH0331290B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE:To decrease the generation of a call loss by allowing a base station to command a channel on which a mobile equipment is to be in standby so as to move the mobile station to the channel quickly. CONSTITUTION:The information representing the existence of the 2nd and 3rd incoming control channels is informed through the 1st incoming control channel in a control zone B. The information representing the existence of the 2nd incoming control channel is informed similarly in a control zone C. When a power switch is turned on while a mobile equipment is in the control zone B, the mobile equipment recognizes the existence of the 3rd incoming control channel and the mobile equipment of the 3rd group is moved to the 3rd incoming control channel immediately. When the mobile equipment moves from the control zone A to the zone B, the 1st incoming control channel of the control zone B is received at first and the channel is moved similarly to the 3rd incoming control channel. In the control zone C, when the mobile equipment of the 3rd group is decided to select the 2nd group, the channel is moved to the 2nd incoming control channel.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は共通制御チャネルを複数有する移動通信システ
ムにおいて、基地局と移動局(以下移動機ともいう)間
で使用する共通制御チャネルを迅速かつ正確に選定する
方法に関するものである。
[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for quickly and easily establishing a common control channel used between a base station and a mobile station (hereinafter also referred to as a mobile device) in a mobile communication system having a plurality of common control channels. It concerns how to select accurately.

〔従来の技術〕[Conventional technology]

現在、サービスが行なわれている自動車電話システムで
は、共通制御チャネルとして、着信制御チャネルと発信
制御チャネルが設けられている。着信制御チャネルは、
主として、移動機へ電話を掛けるときの呼出と接続制御
を行なうための制御チャネルである。
In the car telephone system currently in service, an incoming control channel and an outgoing control channel are provided as common control channels. The incoming control channel is
This is primarily a control channel for controlling calls and connections when making telephone calls to mobile devices.

移動機の電源スィッチがONの状態でかつ通話中や発呼
r!Ih作中等でfr l+名If  球釉躊2+往乞
受は状!!(アイドル状態)にあり、着信制御チャネル
の下りを常時受信していて、着信呼に備えている。
When the power switch of the mobile device is on and the phone is in the middle of a call or a call is being made! Ih work etc. fr l + name If ball glaze 2 + Obegi Uke is a form! ! (idle state), is constantly receiving downlinks on the incoming control channel, and is preparing for an incoming call.

一つの着信制御チャネルに収容できる加入者(移動8り
の数には制限がある。従って、加入数が第一番目の着信
制御チャネルの最大収容加入数を上回ると、第二の着信
制御チャネルが設けられ、新規に加入する移動機はこの
二番目の着信制御チャネルに所属することになる。
There is a limit to the number of subscribers (mobile 8) that can be accommodated in one incoming control channel. Therefore, if the number of subscribers exceeds the maximum number of subscribers that can be accommodated in the first incoming control channel, the second incoming control channel A mobile station that newly joins will belong to this second terminating control channel.

このように移動機が増加して行くと、移動機の第一グル
ープ(第一の着信制御チャネルに対応する移動機群)、
第ニゲループ・・・・・・と順次グループが形成される
As the number of mobile stations increases in this way, the first group of mobile stations (the group of mobile stations corresponding to the first incoming control channel),
Groups are formed in sequence, such as the second loop...

従って、加入数の多い大都市では複数のグループが存在
し、加入数の少ない地域では第一番目のグループだけが
存在することになる。そのため、例えば第二のグループ
の移動機の場合には大部布部では第二番目の着信制御チ
ャネルを選び、この移@h8!が地方に行った時は第一
番目の着信制御チャネルを使用することになる。
Therefore, in large cities with a large number of subscribers, there will be multiple groups, and in areas with a small number of subscribers, only the first group will exist. Therefore, for example, in the case of a mobile station in the second group, the second incoming call control channel is selected in Obubube, and this transfer @h8! When he goes to a rural area, he will use the first incoming control channel.

着信制御は、ある区域毎に区切って行なうので、着信制
御チャネルはその隣接地域相互間では干渉を起こさない
ように周波数の異なるものを使用し、充分な距離をおい
てまた同じ周波数を繰り返して使用している。そのため
、第一の着信制御チャネル用として、例えば、7波用意
することによって、日本全国をカバーすることができる
。第二の着信制御チャネル用としても同様に7波用意す
る。
Incoming call control is carried out separately for each area, so different frequencies are used for incoming control channels to avoid interference between adjacent areas, and the same frequency is used repeatedly at a sufficient distance. are doing. Therefore, by preparing, for example, seven waves for the first incoming call control channel, it is possible to cover all of Japan. Similarly, seven waves are prepared for the second incoming control channel.

従って、この場合、着信制御の各グループには最大7波
ずつ周波数が存在することになる。
Therefore, in this case, each group of incoming call control has a maximum of seven frequencies.

移動機には、この周波数を記憶させておく。グループが
三グループあれば移動機は21波の周波数を記憶してお
(。
This frequency is stored in the mobile device. If there are three groups, the mobile device remembers the frequency of 21 waves (.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

移動機の電源スィッチを投入した場合や他の制御ゾーン
に移動した場合には、最適な着信制御チャネルを選定す
ることが必要である。そのため、移動機はまず、記憶し
ている全ての着信制御チャネルの中から自分が所属する
グループの着信制御チャネルを切替受信して、例えば受
信レベルが最大のチャネルを選定する。選定が終了すれ
ば着信呼出に備えるため、グループ番号と共に所在ゾー
ンの登録(位置登録)を行なう。グループの中の全ての
チャネルを受信しても所要値以上の受信レベルが得られ
ない場合は、他のグループのチャネルを切替受信して最
適な着信制御チャネルを選定することになる。
When a mobile device is turned on or moved to another control zone, it is necessary to select the optimal incoming control channel. Therefore, the mobile device first switches and receives the incoming control channel of the group to which it belongs from among all the stored incoming control channels, and selects, for example, the channel with the highest reception level. Once the selection has been completed, the group number and zone of location are registered (location registration) in preparation for an incoming call. If a reception level equal to or higher than the required value cannot be obtained even after receiving all channels in a group, the most suitable incoming control channel is selected by switching to receive channels from other groups.

このような方法で選定を行なうと、例えば第三グループ
の移動機が第一の着信制御チャネルしかないゾーンへ行
った場合には、最大21波を切り替えて受信する、ユと
になる。
If selection is made in this manner, for example, if a third group of mobile devices goes to a zone where only the first incoming control channel is available, a maximum of 21 waves will be switched and received.

このように、従来の制御チャネル選定方法においては、
移動機がたくさんの周波数を記憶しておかなければなら
ないことおよび制御チャネルの選定に長時間を決する場
合があることなどの問題点があった。
In this way, in the conventional control channel selection method,
Problems include that the mobile device must memorize a large number of frequencies and that it may take a long time to select a control channel.

〔発明の目的〕[Purpose of the invention]

本発明はこれらの問題点を解決するため、移ることによ
り、移動機が速やかにそのチャネルへ移行することので
きる制御チャネル選定方式を提供することを目的として
いる。
In order to solve these problems, it is an object of the present invention to provide a control channel selection method that allows a mobile device to quickly switch to that channel.

そして、本発明によれば、上記目的は前記特許請求の範
囲に記載した手段により達成される。
According to the present invention, the above object is achieved by the means described in the claims.

以下、本発明の構成等に関し実施例の図面に基づいて詳
細に説明する。
EMBODIMENT OF THE INVENTION Hereinafter, the structure etc. of this invention will be described in detail based on the drawing of an Example.

〔実施例〕〔Example〕

第1図は着信制御チャネルの地域的に見た施設モデルを
示す図であって、A−Eはそれぞれ制御ゾーン、「、1
〜「、1はそれぞれの制御ゾーンにおける着信制御チャ
ネルを示しており、1〜3はそれぞれ第一制御チャネル
グループル第三制御チャネル−グループ、4は無線基地
局ゾーンを表わしている。
FIG. 1 is a diagram showing a regional facility model of incoming control channels, where A-E are control zones, ``, 1
1 represents the incoming control channel in each control zone, 1 to 3 represent the first control channel group and the third control channel group, respectively, and 4 represents the radio base station zone.

第1図において、制御ゾーンBでは三つの着信制御チャ
ネルが設けられ、制御ゾーンC″C−は二つの着信制御
チャネルが設けられ、その他のゾーンでは一つの着信制
御チャネルが設けられている。
In FIG. 1, control zone B is provided with three incoming control channels, control zone C''C- is provided with two incoming control channels, and the other zones are provided with one incoming control channel.

移動機は第三グループの移動機である場合、制御ゾーン
Bでは第三の着信制御チャネルを選択し、制御ゾーンC
では第二の着信制御チャネル(第三グループの移動機は
第ニゲループを選定するものとあらかじめ決められてい
る場合)、その他のゾーンでは第一の着信制御チャネル
を選択すればよい。
If the mobile station is a third group mobile station, it selects the third incoming control channel in control zone B, and selects the third incoming control channel in control zone C.
In this case, the second incoming call control channel may be selected (if it is predetermined that mobile stations in the third group should select the second loop), and in other zones, the first incoming call control channel may be selected.

本発明では、これを次の二つの特徴ある技術・手段を用
いて実現している。
In the present invention, this is achieved using the following two distinctive techniques and means.

■ 第一の着信制御チャネルでは、第二、第三の着信制
御チャネルの有無に係る情報を報知する。第二の着信制
御チャネルでは、第三の着信制御チャネルの有無に係る
情報を報知する。
■ The first incoming control channel broadcasts information regarding the presence or absence of the second and third incoming control channels. The second incoming control channel broadcasts information regarding the presence or absence of the third incoming control channel.

■ 移動機は初期チャネル選定及びゾーン移行する際、
まず第一の着信制御チャネルを受信するようにしておき
、そこで上記■の情報を得て、自分が所属すべきグルー
プのチャネルへ移行する。
■ When the mobile device makes initial channel selection and zone transition,
First, the first incoming call control channel is set to be received, the information in (2) above is obtained, and the user moves to the channel of the group to which he/she should belong.

従って、制御ゾーンBでは、第一の着信制御チャネルで
第二および第三の着信制御チャネルが存在する情報が報
知されている。また、制御ゾーンct’は、同様に第二
の着信制御チャネルが存在することを示す情報が報知さ
れている。
Therefore, in control zone B, the first incoming control channel broadcasts information that the second and third incoming control channels exist. Furthermore, in the control zone ct', information indicating that a second incoming control channel exists is similarly broadcast.

移動機が制御ゾーンBで電源スィッチをONした場合、
移動機は上記■により第三の珊信制御チャネルが存在す
ることを知り、第三グループの移動機は第三の着信制御
チャネルにすぐ移行できる。
When the mobile device turns on the power switch in control zone B,
The mobile station learns of the existence of the third incoming call control channel through (1) above, and the mobile stations in the third group can immediately shift to the third incoming call control channel.

移動機が制御ゾーンAからBへ移動する場合にも、制御
ゾーンBの第一着信制御チャネルをまず受信することに
より、同様に第三の着信制御チャネルへ移行できる。
When the mobile station moves from control zone A to B, it can similarly shift to the third incoming control channel by first receiving the first incoming control channel of control zone B.

制御ゾーンCでは、第三グループの移動機は第ニゲルー
プを選定するものとあらかじめ決められている場合、第
二の着信制御チャネルには同様にしてすぐ移行できる。
In control zone C, if it is predetermined that the third group of mobile stations will select the second loop, they can similarly immediately shift to the second incoming control channel.

このようにして、使用すべき制御チャネルを速やかにか
つ正確に決定することができる。
In this way, the control channel to be used can be quickly and accurately determined.

さらに本発明を用いれば、第2図に示すような第三番目
の制御チャネルのエリアが狭く構成されている場合でも
正確にチャネルの選定が可能である。
Further, by using the present invention, it is possible to accurately select a channel even when the area of the third control channel is configured to be narrow as shown in FIG.

このfJS2図のような場合に移動機が待ち受は状態の
ままゾーンを移行すると、従来技術では第三の制御チャ
ネルへ円滑に移行させることは不可能である。その理由
はゾーンBの中では第一または第二制御チャネルの受信
電界レベルが低下しないから、制御チャネルの選定作業
を行なわないことによる。そのため、この欠点を改善す
る目的で定期的にかつ強制的に選定作業を行なわせるよ
うにする方法もあるが、この方法では、正確さに欠ける
ことや着信呼に対する呼損が増える欠点があった。
In a case like this fJS2 diagram, if the mobile device shifts the zone while remaining in the standby state, it is impossible with the prior art to smoothly shift to the third control channel. The reason for this is that since the received electric field level of the first or second control channel does not decrease in zone B, no control channel selection operation is performed. Therefore, in order to improve this shortcoming, there is a method of forcing selection work to be carried out periodically, but this method has the drawbacks of lacking accuracy and increasing the number of missed calls. .

本発明では、このような場合でも必要なエリアのみ制御
チャネルに関する情報を報知することにより容易に実現
することができ、かつ特性上の問題も生じない。このよ
うなゾーン構成をとることにより、トラヒックに応じて
経済的で柔軟なシステムが実現できる。
According to the present invention, even in such a case, it can be easily realized by broadcasting the information regarding the control channel only in the necessary areas, and there will be no problems in terms of characteristics. By adopting such a zone configuration, an economical and flexible system can be realized depending on the traffic.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、本発明の制御チャネル選定方法に
よれば、移t!!h機が自己の使用する制御チャネルを
迅速に決定することができるので、その間における損失
呼の発生が低減するという利点がある。
As explained above, according to the control channel selection method of the present invention, the shift t! ! Since machine h can quickly determine the control channel it will use, there is an advantage that the occurrence of lost calls during this time is reduced.

また、複数の制御チャネルが存在する場合に、該複数の
制御チャネル内にエリアを狭く設定した制御チャネルが
あっても、移動機の該制御チャネルへの移行が円滑に行
なえるから、地域ごとのトラヒックに応じて制御ゾーン
を設定することができるので経済的で柔軟なシステムを
構成し得る利点がある。
In addition, when multiple control channels exist, even if there is a control channel with a narrow area set within the multiple control channels, the mobile device can smoothly transition to that control channel, so Since control zones can be set according to traffic, there is an advantage that an economical and flexible system can be constructed.

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

tJSJ図は着信制御チャネルの地域的に見た施設モデ
ルの一例を示す図、第2図は着信制御チャネルの地域的
に見た施設モデルの他の例を示す図である。 1 ・・・・・・第一制御チャネルグループ、 2 ・
・・・・・第二制御チャネルグループ、 3 ・・・・
・・第三−制御チャネルグループ、 4 ・・・・・・
 無線基地局ゾーン 代理人 弁理士 本  間     崇佛 2 図
The tJSJ diagram is a diagram showing an example of a regionally viewed facility model of the incoming call control channel, and FIG. 2 is a diagram showing another example of the regionally seen facility model of the incoming call control channel. 1...First control channel group, 2.
...Second control channel group, 3...
...Third - control channel group, 4...
Wireless base station zone agent Patent attorney Takabutsu Honma 2 Figure

Claims (1)

【特許請求の範囲】[Claims] 地域ごとに単数または複数の共通制御チャネルを用いる
制御ゾーンが形成されていて、共通制御チャネルが単数
の場合には、該共通制御チャネルは第一番目の制御チャ
ネルグループに含まれるものとすると共に、共通制御チ
ャネルが複数の場合には、その内の一つが前記第一番目
の制御チャネルグループに含まれ他の共通制御チャネル
はそれぞれ異なる制御チャネルグループに含まれるもの
と成し、複数の移動局はこれらの制御チャネルグループ
にそれぞれ対応するグループ別に分けられていて、移動
局の所属するグループ別に、複数の共通制御チャネルの
存在する制御ゾーンで使用する共通制御チャネルのグル
ープが予め定められている移動通信方式において、各制
御ゾーンにおける共通制御チャネルの存在状況に係る情
報をそれぞれの制御ゾーンの第一番目の制御チャネルグ
ループに含まれる共通制御チャネルで報知し、移動局が
該情報を基に使用すべき共通制御チャネルを選ぶことを
特徴とする制御チャネル選定方法。
If a control zone using one or more common control channels is formed for each region and there is only one common control channel, the common control channel shall be included in the first control channel group, and When there are multiple common control channels, one of them is included in the first control channel group and the other common control channels are included in different control channel groups, and multiple mobile stations Mobile communication is divided into groups that correspond to these control channel groups, and groups of common control channels to be used in control zones where multiple common control channels exist are predetermined for each group to which a mobile station belongs. In this method, information regarding the existence status of the common control channel in each control zone is broadcast on the common control channel included in the first control channel group of each control zone, and the mobile station should use this information based on the information. A control channel selection method characterized by selecting a common control channel.
JP60230001A 1985-10-17 1985-10-17 Selecting method for control channel Granted JPS6292529A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60230001A JPS6292529A (en) 1985-10-17 1985-10-17 Selecting method for control channel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60230001A JPS6292529A (en) 1985-10-17 1985-10-17 Selecting method for control channel

Publications (2)

Publication Number Publication Date
JPS6292529A true JPS6292529A (en) 1987-04-28
JPH0331290B2 JPH0331290B2 (en) 1991-05-02

Family

ID=16901043

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60230001A Granted JPS6292529A (en) 1985-10-17 1985-10-17 Selecting method for control channel

Country Status (1)

Country Link
JP (1) JPS6292529A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01126025A (en) * 1987-11-11 1989-05-18 Tamura Electric Works Ltd Radiotelephoney system
JPH06284075A (en) * 1993-03-26 1994-10-07 Matsushita Electric Ind Co Ltd Utilization of control channel in micro cellular system
WO1998053631A1 (en) * 1997-05-21 1998-11-26 Kabushiki Kaisha Toshiba Cellular radio system allowing mobile station to communicate through base station connected via cdma radio channel, and base station device and mobile station device used in the same
JP2008092051A (en) * 2006-09-29 2008-04-17 Nec Corp Method for multiplexing control signal and reference signal in mobile communication system, resource assigning method, and base station

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01126025A (en) * 1987-11-11 1989-05-18 Tamura Electric Works Ltd Radiotelephoney system
JPH06284075A (en) * 1993-03-26 1994-10-07 Matsushita Electric Ind Co Ltd Utilization of control channel in micro cellular system
WO1998053631A1 (en) * 1997-05-21 1998-11-26 Kabushiki Kaisha Toshiba Cellular radio system allowing mobile station to communicate through base station connected via cdma radio channel, and base station device and mobile station device used in the same
US6587445B1 (en) 1997-05-21 2003-07-01 Kabushiki Kaisha Toshiba Cellular radio system allowing mobile station to perform communication through base station to which mobile station is connected over cdma radio channel, and base station apparatus and mobile station apparatus which are used for cellular radio system
JP2008092051A (en) * 2006-09-29 2008-04-17 Nec Corp Method for multiplexing control signal and reference signal in mobile communication system, resource assigning method, and base station
US8228936B2 (en) 2006-09-29 2012-07-24 Nec Corporation Method for multiplexing control signals and reference signals in mobile communications system
US9008110B2 (en) 2006-09-29 2015-04-14 Nec Corporation Method for multiplexing control signals and reference signals in mobile communications system
US9445414B2 (en) 2006-09-29 2016-09-13 Nec Corporation Method for multiplexing control signals and reference signals in mobile communications system
US9692570B2 (en) 2006-09-29 2017-06-27 Nec Corporation Method for multiplexing control signals and reference signals in mobile communications system
US10382178B2 (en) 2006-09-29 2019-08-13 Nec Corporation Method for multiplexing control signals and reference signals in mobile communications system
US11057178B2 (en) 2006-09-29 2021-07-06 Nec Corporation Method for multiplexing control signals and reference signals in mobile communications system

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