JPH03214822A - Slot number reservation type access control method - Google Patents

Slot number reservation type access control method

Info

Publication number
JPH03214822A
JPH03214822A JP2008208A JP820890A JPH03214822A JP H03214822 A JPH03214822 A JP H03214822A JP 2008208 A JP2008208 A JP 2008208A JP 820890 A JP820890 A JP 820890A JP H03214822 A JPH03214822 A JP H03214822A
Authority
JP
Japan
Prior art keywords
channel
slot number
signal
base station
request
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
Application number
JP2008208A
Other languages
Japanese (ja)
Inventor
Hidetoshi Kayama
英俊 加山
Takeshi Hattori
武 服部
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 JP2008208A priority Critical patent/JPH03214822A/en
Publication of JPH03214822A publication Critical patent/JPH03214822A/en
Pending legal-status Critical Current

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  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To reduce a request signal and to improve the operating efficiency of an incoming access channel by using a slot number of an access channel as a parameter to inform a request reception to a travelling object. CONSTITUTION:A slot number 2-3 is sent at an interval equal to a length of a slot in an outgoing channel 2-1 of an A-ch. A travelling object trying the access sends a request signal 2-4 via an outgoing channel 2-2 of the A-ch after confirmation of the transmission of the slot number in the outgoing channel 2-1 of the A-ch. After the reception at a base station, a reply signal 2-5 is returned within a prescribed time and a slot number is changed into an inhibit signal 2-8 to prevent collision of request signals with other travelling object. The travelling object receiving the reply signal sends immediately a data signal 2-7. The request signal is reduced by this system, the ineffective occupancy time of a common use line due to collision of request signals is reduced and the channel efficiency of the incoming access channel is improved.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、バースト的なデータ送信をする移動通信にお
ける移動機のランダムアクセス制御方法に関するもので
ある。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a random access control method for a mobile device in mobile communications that transmit data in bursts.

(従来の技術) 従来のランダムアクセス制御の一例としてのデータスロ
ット予約型空線制御方法では、移動機から基地局への上
り信号同士の衝突による上りアクセスチャネルのチャネ
ル効率低下を抑えるために、前記上り信号が要求信号部
分とデータ信号部分を2分する。基地局にアクセスを試
みようとする移動機は、まず下り応答チャネルにおいて
報知されている空線信号を確認した後に、上りアクセス
チャネルを介して要求信号を送信し、基地局からの応答
を待つ。移動機からの要求信号を受信した基地局では直
ちに空線信号を禁止信号に変え、要求信号を発信した移
動機に対して下り応答チャネルを介して応答信号を送信
する。応答信号を受信後、移動機は再び上りアクセスチ
ャネルを用いてデータ信号部分の送信を開始する。第3
図にこの方法のタイミングチャートを示す。
(Prior Art) In a data slot reservation type idle line control method as an example of conventional random access control, the above-mentioned The upstream signal divides the request signal portion and the data signal portion into two. A mobile device attempting to access a base station first checks the idle signal broadcast on the downlink response channel, then transmits a request signal via the uplink access channel, and waits for a response from the base station. Upon receiving the request signal from the mobile device, the base station immediately changes the idle signal to a prohibition signal and transmits a response signal to the mobile device that sent the request signal via the downlink response channel. After receiving the response signal, the mobile device starts transmitting the data signal portion again using the uplink access channel. Third
The figure shows a timing chart for this method.

この方法では基地局が要求信号を発信した移動機を識別
できるように、要求信号に移動機のIDコードを付加し
ており、基地局ではこのIDコードを含んだ応答信号を
返信することによって、その移動機に要求信号を受付け
たことを報知している。
In this method, the ID code of the mobile device is added to the request signal so that the base station can identify the mobile device that transmitted the request signal, and the base station sends back a response signal containing this ID code. The mobile device is notified that the request signal has been received.

(発明が解決しようとする課題) 従来の方式においては、基地局が応答信号を送るべき移
動機を認識するために、要求信号に各移動機のIDコー
ドが付加されている。このため要求信号が長《なり、要
求信号同士の衝突による共有回線の無効占有時間も長い
ため、チャネル効率が十分に改善されないという欠点が
あった。
(Problems to be Solved by the Invention) In the conventional system, the ID code of each mobile device is added to the request signal in order for the base station to recognize the mobile device to which the response signal should be sent. For this reason, the request signal becomes long, and the invalid occupation time of the shared line due to collision between the request signals is also long, resulting in a disadvantage that the channel efficiency cannot be sufficiently improved.

本発明はこの欠点を改善することを目的とする。The present invention aims to improve this drawback.

(課題を解決するための手段) 本発明の特徴は、基地局と、該基地局が制御する複数の
移動機からなる移動通信であって、移動機から基地局へ
の上りアクセスチャネル及び基地局から移動機の下り応
答チャネルからなる制御チャネルを有し、各移動機が必
要に応じて前記上りアクセスチャネルを介し基地局に対
して予約型ランダムアクセスを行うシステムにおいて、
前記下り応答チャネルにより報知される、スロットの通
し番号であるスロットナンバーを用7いて、移動機のア
クセスの予約を行うスロットナンバー予約型アクセス制
劇方法にある。
(Means for Solving the Problems) A feature of the present invention is mobile communication consisting of a base station and a plurality of mobile devices controlled by the base station, in which an uplink access channel from the mobile device to the base station and In a system having a control channel consisting of a downlink response channel of a mobile station, each mobile station performs reserved random access to a base station via the uplink access channel as necessary,
The present invention provides a slot number reservation type access control method for reserving access for a mobile device using a slot number, which is a serial number of a slot, and which is broadcast through the downlink response channel.

(作用) 本発明では要求信号を短《するために、要求受付を移動
機に知らせるためのパラメータとして移動機のIDコー
ドの代わりにアクセスチャネルのスロットナンバーを用
いる。すなわち要求信号による予約が受け付けられた時
刻をもとにして、応答信号を要求信号を送出した移動機
に対して報知する方法である。この結果、要求信号を短
縮することが可能となる。
(Operation) In the present invention, in order to shorten the request signal, the slot number of the access channel is used instead of the ID code of the mobile device as a parameter for notifying the mobile device of acceptance of the request. That is, this is a method of notifying a response signal to the mobile device that sent the request signal based on the time when the reservation based on the request signal was accepted. As a result, it becomes possible to shorten the request signal.

スロットナンバーは通し番号とし、時刻とともに歩進さ
れる。
The slot number is a serial number and is incremented with time.

(実施例) 本発明によるスロットナンバー予約型アクセス制御方法
のタイミング・チャートを第1図に示す。基地局からの
下り応答チャネル1−1は要求信号より長い時間幅でス
ロット化されており、それぞれのスロットにはある周期
で繰り返される番号(n−3)〜(n+5)が付けられ
ている。基地局にアクセスしようとする移動機は、まず
上りアクセスチャネル1−2を介して要求償号1−3を
送信する。この時移動機は、下り応答チャネルで報知さ
れているスロットナンバー(この場合、n−2゜に相当
)を記憶しておく。次に要求信号を受け付けた基地局は
、要求信号を受け付けた時のスロットナンバーの情報を
含んだ応答信号1−5を下り応答チャネルを介して送信
する。これを受信した移動機は、スロットナンバーの情
報1一6が、自分が要求信号を送信した時に記憶したも
のと適合するかどうかを調べ、適合していればこれに続
けてデータ信号1−7の送信を開始する。
(Embodiment) FIG. 1 shows a timing chart of the slot number reservation type access control method according to the present invention. The downlink response channel 1-1 from the base station is divided into slots with a time width longer than that of the request signal, and each slot is assigned a number (n-3) to (n+5) that is repeated at a certain period. A mobile station attempting to access a base station first transmits a request code 1-3 via an uplink access channel 1-2. At this time, the mobile device stores the slot number (corresponding to n-2° in this case) that is broadcast on the downlink response channel. Next, the base station that received the request signal transmits response signals 1-5 containing information on the slot number at the time the request signal was received via the downlink response channel. The mobile device that receives this checks whether the slot number information 1-6 matches what it had memorized when it sent the request signal, and if it does, it sends the data signals 1-7. Start sending.

次に、本方式を移動通信に適用した際の実施例を示す。Next, an example will be shown in which this method is applied to mobile communication.

チャネル構成としては従来方式と同様、A−ch,P−
ch.及びV−chを考える。このうちスロットナンバ
ーは、A−ch下りのチャネルを用いて報知するものと
する。この時のタイミング・チャートを第2図に示す。
The channel configuration is the same as the conventional system, A-ch, P-
ch. and V-ch. Among these, the slot number shall be broadcast using the A-ch down channel. A timing chart at this time is shown in FIG.

この図から分かるようにスロットナンバー2−3はA−
ch下り2−1においてスロットの長さに等しい間隔で
送出されている。今アクセスを試みようとする移動機は
A−ch下り2−1においてスロットナンバーが送出さ
れているのを確認した後、A−ch上92−2を介して
要求信号2−4を送信する。
As you can see from this diagram, slot number 2-3 is A-
In channel downlink 2-1, it is sent out at intervals equal to the length of the slot. After confirming that the slot number is being sent on the A-ch downlink 2-1, the mobile device that is about to attempt access transmits a request signal 2-4 via the A-ch uplink 92-2.

基地局側では要求信号を正営に受信した後、一定時間内
にA−ch下りで応答信号2−5を返すとともにスロッ
トナンバーを禁止信号2−8に変え、他の移動機が要求
信号を送信して信号同士の衝突が発生するのを防ぐ。応
答信号を受けた移動機は再びA−ch上りを介してただ
ちにデータ信号2−7の送出を行う。
After the base station receives the request signal, it returns a response signal 2-5 on the A-ch downlink within a certain period of time and changes the slot number to a prohibition signal 2-8, so that other mobile devices can receive the request signal. to prevent collisions between signals. Upon receiving the response signal, the mobile station immediately transmits the data signal 2-7 again via the A-ch uplink.

本発明によるスロットナンバー予約型アクセス制御方式
を用いることにより、要求信号の構成としては、要求信
号であることを示す識別コードと制御ゾーン識別コード
のみで済むことになり、要求信号の大幅な短縮が可能と
なる。その結果、要求信号同士の衝突による共有回線の
無効占有時間が短縮され、゛第4図で示すようにランダ
ムアクセセスである上りアクセスチャネルのチャネル効
率の改善が期待できる。ここで4−1は本発明によるチ
ャネル効率特性、4−2は従来のチャネル効率特性を示
す。
By using the slot number reservation type access control system according to the present invention, the request signal only needs to consist of an identification code indicating that it is a request signal and a control zone identification code, which greatly reduces the length of the request signal. It becomes possible. As a result, the invalid occupation time of the shared line due to collision between request signals is reduced, and as shown in FIG. 4, it is expected that the channel efficiency of the uplink access channel, which is a random access channel, will be improved. Here, 4-1 shows the channel efficiency characteristic according to the present invention, and 4-2 shows the conventional channel efficiency characteristic.

(発明の効果) 以上のごとく、本発明によると、アクセスチャネルの使
用効率を向上させることができる。なお、本発明は無線
による移動通信ばかりでなく、有線による固定通信にも
用いることができる。
(Effects of the Invention) As described above, according to the present invention, it is possible to improve the usage efficiency of access channels. Note that the present invention can be used not only for wireless mobile communication but also for wired fixed communication.

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

第1図は本発明のスロットナンバー予約型アクセス制御
方法のタイミング・チャート、第2図は本発明を用いた
アクセス制御例を示す図、 第3図は従来のデータスロット予約型空線制御方式のタ
イミング・チャート、 第4図は本発明による上りアクセスチャネルのチャネル
効率の改善効果を示す図である。 1−1 1−2 1 −3 1 −4 1−5 1−6 1 −7 2−1 2 −2 2−3 2−4 2−5 2−6 2−7 2−8 3−1 3−2 3−3 3−4 3−5 下り制御チャネル、 上り制御チャネル、 要求信号、 スロットナンバー 応答信号、 ;要求信号受付スロットナンバー ;データ信号、 ;A−ch下りチャネル、 A−ch上りチャネル、 スロットナンバー 要求信号、 応答信号、 要求信号受付スロットナンバー データ信号、 禁止信号、 A−ch下りチャネル、 A−ch上りチャネル、 禁止信号、 要求信号、 応答信号、 3−6;データ信号、 3−7;空線信号。
Fig. 1 is a timing chart of the slot number reservation type access control method of the present invention, Fig. 2 is a diagram showing an example of access control using the present invention, and Fig. 3 is a diagram of the conventional data slot reservation type idle line control method. Timing Chart FIG. 4 is a diagram showing the effect of improving the channel efficiency of the uplink access channel according to the present invention. 1-1 1-2 1-3 1-4 1-5 1-6 1-7 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 3-1 3- 2 3-3 3-4 3-5 Downlink control channel, uplink control channel, request signal, slot number response signal, ;request signal acceptance slot number; data signal, ;A-ch downlink channel, A-ch uplink channel, slot Number request signal, response signal, request signal acceptance slot number data signal, prohibition signal, A-ch down channel, A-ch up channel, prohibition signal, request signal, response signal, 3-6; data signal, 3-7; Blank signal.

Claims (1)

【特許請求の範囲】 基地局と、該基地局が制御する複数の移動機からなる移
動通信であって、移動機から基地局への上りアクセスチ
ャネル及び基地局から移動機の下り応答チャネルからな
る制御チャネルを有し、各移動機が必要に応じて前記上
りアクセスチャネルを介し基地局に対して予約型ランダ
ムアクセスを行うシステムにおいて、 前記下り応答チャネルにより報知される、スロットの通
し番号であるスロットナンバーを用いて、移動機のアク
セスの予約を行うことを特徴とする、スロットナンバー
予約型アクセス制御方法。
[Claims] Mobile communication consisting of a base station and a plurality of mobile devices controlled by the base station, comprising an uplink access channel from the mobile device to the base station and a downlink response channel from the base station to the mobile device. In a system having a control channel and in which each mobile device performs reserved random access to a base station via the uplink access channel as necessary, a slot number, which is a serial number of a slot, is broadcasted through the downlink response channel. A slot number reservation type access control method characterized by reserving access for a mobile device using the slot number reservation type access control method.
JP2008208A 1990-01-19 1990-01-19 Slot number reservation type access control method Pending JPH03214822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008208A JPH03214822A (en) 1990-01-19 1990-01-19 Slot number reservation type access control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008208A JPH03214822A (en) 1990-01-19 1990-01-19 Slot number reservation type access control method

Publications (1)

Publication Number Publication Date
JPH03214822A true JPH03214822A (en) 1991-09-20

Family

ID=11686829

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008208A Pending JPH03214822A (en) 1990-01-19 1990-01-19 Slot number reservation type access control method

Country Status (1)

Country Link
JP (1) JPH03214822A (en)

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