JP2000013867A - Mobile station transmission timing correction method - Google Patents
Mobile station transmission timing correction methodInfo
- Publication number
- JP2000013867A JP2000013867A JP10174961A JP17496198A JP2000013867A JP 2000013867 A JP2000013867 A JP 2000013867A JP 10174961 A JP10174961 A JP 10174961A JP 17496198 A JP17496198 A JP 17496198A JP 2000013867 A JP2000013867 A JP 2000013867A
- Authority
- JP
- Japan
- Prior art keywords
- mobile station
- timing
- transmission timing
- base station
- reception
- 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.)
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- Time-Division Multiplex Systems (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
(57)【要約】
【課題】 時分割多重通信方式で基地局と交信している
移動局の基地局との距離の変化による遅延時間に対応し
て移動局の送信タイミングを制御できる移動局の送信タ
イミング補正方法を提供すること。
【解決手段】 時分割多重通信方式で基地局と交信して
いる移動局の送信タイミング補正方法において、基地局
には受信タイミングを設定するタイミング設定手段及び
移動局からの信号の受信タイミングを検出する検出手段
を設け、移動局には送信タイミングを制御する送信タイ
ミング制御手段を設け、基地局が移動局と通話中、タイ
ミング設定手段で設定された設定値と検出手段で検出さ
れた受信タイミングを比較し、その差を補正値として移
動局へ送信し、移動局は常時送信タイミング制御手段で
該補正値に基づいて送信タイミングを制御する。
(57) [Summary] [PROBLEMS] To provide a mobile station capable of controlling transmission timing of a mobile station corresponding to a delay time due to a change in the distance between the base station and the mobile station communicating with the base station in a time division multiplex communication system. To provide a transmission timing correction method. In a transmission timing correction method for a mobile station communicating with a base station in a time division multiplex communication system, a timing setting means for setting a reception timing in the base station and a reception timing of a signal from the mobile station are detected. Detecting means is provided, and the mobile station is provided with transmission timing control means for controlling transmission timing, and during a call with the mobile station, the base station compares the set value set by the timing setting means with the reception timing detected by the detecting means. Then, the difference is transmitted to the mobile station as a correction value, and the mobile station constantly controls transmission timing based on the correction value by the transmission timing control means.
Description
【０００１】[0001]
【発明の属する技術分野】本発明はＴＤＭＡ方式（時分
割多重通信方式）で基地局と交信している移動局の送信
タイミングを補正する送信タイミング補正方法に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission timing correction method for correcting the transmission timing of a mobile station communicating with a base station in a TDMA system (time division multiplex communication system).
【０００２】[0002]
【従来の技術】ＴＤＭＡ方式の通信では、通話チャネル
にタイムスロットを割当て、時分割された送信用／受信
用スロットを使用し、基地局と移動局の間で同期をとり
ながらバ−スト信号で交信している。このため基地局と
移動局間では送信及び受信の同期タイミングをとること
が非常に重要になる。2. Description of the Related Art In TDMA communication, a time slot is assigned to a communication channel, time-divided transmission / reception slots are used, and a base station and a mobile station use a burst signal while synchronizing. Communicating. For this reason, it is very important to take synchronization timing of transmission and reception between the base station and the mobile station.
【０００３】従来、この種の技術としては特開昭６２−
６７９３９号公報に記載されたＴＤＭＡアクイジシヨン
方式がある。図４は上記公報に記載されたＴＤＭＡアク
イジション方式のブロック構成例を示す図である。Conventionally, this type of technology has been disclosed in
There is a TDMA acquisition system described in Japanese Patent No. 67939. FIG. 4 is a diagram showing an example of a block configuration of the TDMA acquisition system described in the above publication.
【０００４】上記ＴＤＭＡアクイジション方式におい
て、移動局がアクイジションを行なう際には、端子５２
より切り替え命令でスイッチ３３及びスイッチ４３を駆
動し、主回線用送信局部発振器３１をアクイジション用
送信局部発振器３２に切り替えると共に、主回線用受信
局部発振器４１をアクイジション用受信局部発振器４２
に切り替え、アクイジション回線を使用し、定められた
アクイジションパタ−ンをスイッチ３５、送信部３４、
送／受共用器５０、アンテナ５１を介して基地局へ送信
する。In the TDMA acquisition method, when the mobile station performs acquisition, the terminal 52
The switch 33 and the switch 43 are driven by the switching command to switch the main line transmission local oscillator 31 to the acquisition transmission local oscillator 32, and the main line reception local oscillator 41 to the acquisition reception local oscillator 42.
To the switch 35, the transmission unit 34,
The signal is transmitted to the base station via the transmitting / receiving duplexer 50 and the antenna 51.
【０００５】基地局ではアクイジションパタ−ンを受信
し、受信タイミングが所定の位置からどの程度ずれてい
るかを検出し、移動局に補正値として通知する。移動局
ではアンテナ５１、送／受共用器５０、受信部４４、ス
イッチ４５を通して補正値を受信し、補正値がゼロにな
るように送信タイミングを調整する。この送信タイミン
グの調整は子局が基地局と通信を開始するときに行なわ
れる。[0005] The base station receives the acquisition pattern, detects how far the reception timing deviates from a predetermined position, and notifies the mobile station as a correction value. The mobile station receives the correction value through the antenna 51, the transmission / reception duplexer 50, the reception unit 44, and the switch 45, and adjusts the transmission timing so that the correction value becomes zero. The adjustment of the transmission timing is performed when the slave station starts communication with the base station.
【０００６】また、上記以外の送信タイミングの補正方
法として、移動局のみでタイミングのずれを補正する方
法がある。これは固定の伝搬遅延時間を予め記憶してお
き、通信を開始するときにその時間を補正するものであ
る。[0006] As another method of correcting the transmission timing, there is a method of correcting the timing deviation only by the mobile station. This is to store a fixed propagation delay time in advance and correct the time when communication is started.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上記に
述べた従来のＴＤＭＡアクイジション方式では、移動局
が移動した場合、距離が変わるので移動局と基地局間の
信号の伝搬遅延時間も変化する。従って、通話開始時と
通話中における送信タイミングのずれも違ってくる可能
性があり、従来の方式では移動局と基地局との距離の変
化による遅延時間に対応することができないと云う問題
があった。However, in the above-described conventional TDMA acquisition system, when the mobile station moves, the distance changes, so that the signal propagation delay time between the mobile station and the base station also changes. Therefore, there is a possibility that a difference between transmission timings at the start of the call and during the call may be different, and the conventional method cannot cope with a delay time due to a change in the distance between the mobile station and the base station. Was.
【０００８】また、特定のパタ−ンにより送信タイミン
グのずれを検出するため、その特定のパタ−ンの発生回
路が必要となると云う問題もあった。There is another problem that a circuit for generating a specific pattern is required in order to detect a shift in transmission timing based on a specific pattern.
【０００９】本発明は上述の点に鑑みてなされたもの
で、移動局と基地局との距離の変化による遅延時間に対
応して移動局の送信タイミングを制御できる移動局の送
信タイミング補正方法を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides a mobile station transmission timing correction method capable of controlling the mobile station transmission timing in accordance with a delay time caused by a change in the distance between the mobile station and the base station. The purpose is to provide.
【００１０】[0010]
【課題を解決するための手段】上記課題を解決するため
本発明は、時分割多重通信方式で基地局と交信している
移動局の送信タイミング補正方法において、基地局には
受信タイミングを設定するタイミング設定手段及び移動
局からの信号の受信タイミングを検出する検出手段を設
け、移動局には送信タイミングを制御する送信タイミン
グ制御手段を設け、基地局が移動局と通話中、タイミン
グ設定手段で設定された設定値と検出手段で検出された
受信タイミングを比較し、その差を補正値として移動局
へ送信し、移動局は常時送信タイミング制御手段で該補
正値に基づいて送信タイミングを制御することを特徴と
する。According to the present invention, there is provided a method for correcting a transmission timing of a mobile station communicating with a base station in a time division multiplex communication system, wherein a reception timing is set in the base station. Timing setting means and detection means for detecting the reception timing of a signal from the mobile station are provided. The mobile station is provided with transmission timing control means for controlling the transmission timing, and the base station is set by the timing setting means during a call with the mobile station. Comparing the set value thus set with the reception timing detected by the detection means, transmitting the difference to the mobile station as a correction value, and the mobile station always controlling the transmission timing based on the correction value by the transmission timing control means. It is characterized by.
【００１１】[0011]
【発明の実施の形態】以下、本発明の実施の形態例を図
面に基づいて詳細に説明する。図１は本発明の移動局の
送信タイミング補正方法の実施する基地局及び移動局の
構成例を示す図であり、図１（ａ）は基地局における補
正処理部の構成を示し、図１（ｂ）は移動局における補
正処理部の構成を示す図である。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing an example of the configuration of a base station and a mobile station in which a method for correcting a transmission timing of a mobile station according to the present invention is performed. FIG. FIG. 2B is a diagram illustrating a configuration of a correction processing unit in the mobile station.
【００１２】本発明の移動局２の送信タイミング補正方
法は、基地局１に設けたメッセ−ジ処理部１１、受信部
１２のタイミング検出部１２−１、送信部１３、アンテ
ナ１４と、移動局２に設けたメッセ−ジ処理部２１、受
信部２２、送信タイミング制御部２３、送信部２４、ア
ンテナ２５を通して実行される。The method for correcting the transmission timing of the mobile station 2 according to the present invention includes a message processing unit 11, a timing detection unit 12-1, a transmission unit 13, and an antenna 14 of the reception unit 12 provided in the base station 1. 2 is executed through a message processing unit 21, a reception unit 22, a transmission timing control unit 23, a transmission unit 24, and an antenna 25 provided in the communication unit 2.
【００１３】基地局１は移動局２から発信されたバ−ス
ト信号をアンテナ１４を介して、受信部１２で受信しタ
イミング検出部１２−１で受信タイミングのずれを検出
する。図２は基地局における受信タイミングの例を示す
図である。図において、ＲＸ＿ＯＮ信号はバ−スト信号
を受付ける為のゲ−ト信号であり、バ−スト信号の受信
より時間ｔだけ前にオン状態にすることにより、バ−ス
ト信号を正常に受信している。バ−スト信号はユニ−ク
ワ−ドＵＷ（詳細後述）で同期をとる。時間ｔの最適値
ｔ０は予め受信部１２に設定されている。The base station 1 receives a burst signal transmitted from the mobile station 2 via the antenna 14 at the receiving section 12 and detects a shift in the reception timing at the timing detecting section 12-1. FIG. 2 is a diagram illustrating an example of reception timing in a base station. In the figure, an RX_ON signal is a gate signal for receiving a burst signal, and is turned on only a time t before the reception of the burst signal, so that the burst signal can be normally received. I have. The burst signal is synchronized with a unique quad UW (described in detail later). The optimum value t 0 of the time t is set in the receiving unit 12 in advance.
【００１４】タイミング検出部１２−１はＲＸ＿ＯＮ信
号の立上りからユニ−クワ−ドＵＷ受信までの時間ｔと
前記設定されている最適値ｔ０からのタイミングのずれ
（ｔ ０−ｔ）を検出し、補正値としてメッセ−ジ処理部
１１へ送る。メッセ−ジ処理部１１では前記補正値を送
信メッセ−ジとして処理し、送信部１３からアンテナ１
４を介して移動局２へ送信する。The timing detector 12-1 receives the RX_ON signal.
Time t from the rise of the signal to the reception of the uniquad UW
The set optimum value t0Deviation from timing
(T 0-T) is detected, and a message processing unit is used as a correction value.
Send to 11. The message processing unit 11 sends the correction value.
The message is processed as a communication message,
4 to the mobile station 2.
【００１５】図３は通話チャネルのデ−タフォ−マット
を示す図である。図示するように、通話チャネルは最初
にバ−ストの立上りを示すＲビット、信号のスタ−トを
示すＳＳビット、固定ビットパタ−ンのプリアンブル
（ＰＲ）、同期をとるためのユニ−クワ−ド（ＵＷ）、
チャネル識別子（ＣＩ）、付随制御チャネルを示すＳＡ
等の制御情報に続いて、通話デ−タ（Ｉ）、最後にエラ
−チェックの為のＣＲＣコ−ドにより構成される。FIG. 3 is a diagram showing the data format of the traffic channel. As shown in the figure, the speech channel first has an R bit indicating the rising of the burst, an SS bit indicating the start of the signal, a preamble (PR) of a fixed bit pattern, and a uniquad for synchronization. (UW),
Channel identifier (CI), SA indicating associated control channel
Following the control information, the communication data (I) and finally a CRC code for error check.
【００１６】基地局１のメッセ−ジ処理部１１は補正値
を通話デ−タ（Ｉ）の場所に設定し、チャネル識別子
（ＣＩ）に補正値であることを指定することにより、補
正値を移動局２へ送信することができる。その他に、付
随制御チャネルを示すＳＡに補正値を設定して送信する
ことも可能である。なお、送信タイミングがずれていな
い場合は補正値を送らない。The message processing section 11 of the base station 1 sets the correction value at the location of the call data (I) and designates the correction value in the channel identifier (CI), thereby setting the correction value. It can be transmitted to the mobile station 2. In addition, it is also possible to set a correction value to SA indicating the associated control channel and transmit the same. If the transmission timing is not shifted, no correction value is sent.
【００１７】移動局２では基地局１からの信号をアンテ
ナ２５を介して受信部２２で受信し、メッセ−ジ処理部
２１では補正値を認識し取りだす。送信タイミング制御
部２３は現在の送信タイミングを該補正値で補正するこ
とにより、送信信号は補正されたタイミングで送信部２
４からアンテナ２５を介して送信される。In the mobile station 2, the signal from the base station 1 is received by the receiving section 22 via the antenna 25, and the message processing section 21 recognizes and extracts the correction value. The transmission timing control unit 23 corrects the current transmission timing with the correction value, so that the transmission signal is transmitted at the corrected timing.
4 via the antenna 25.
【００１８】以上述べたように本発明の実施の形態例に
よれば、基地局１では常時、移動局２からの受信タイミ
ングｔを検出し最適値ｔ０からのタイミングのずれ（ｔ
０−ｔ）を検出し補正値として移動局２へ送信し、移動
局２は補正値に基づいて逐次送信タイミングを補正して
いるので、移動局２が通話中に移動し基地局１からの距
離が変化しても送信タイミングがずれることはなくな
り、基地局１での受信エラ−も軽減される。According to an exemplary embodiment of the present invention as mentioned above, always in the base station 1, the timing deviation from the optimum value t 0 detects the reception timing t from the mobile station 2 (t
0- t) is detected and transmitted to the mobile station 2 as a correction value. Since the mobile station 2 sequentially corrects the transmission timing based on the correction value, the mobile station 2 moves during a call and transmits from the base station 1. Even if the distance changes, the transmission timing does not shift, and the reception error at the base station 1 is reduced.
【００１９】また、タイミングのずれの検出はユニ−ク
ワ−ドＵＷで行ない特別なパタ−ンデ−タの発生を必要
としないので回路構成が容易になる。Further, since the detection of the timing deviation is performed by the uni-quad UW and the generation of special pattern data is not required, the circuit configuration becomes easy.
【００２０】[0020]
【発明の効果】以上説明したように本発明によれば、基
地局には受信タイミングを設定するタイミング設定手段
及び移動局からの信号の受信タイミングを検出する検出
手段を設け、移動局には送信タイミングを制御する送信
タイミング制御手段を設け、基地局が移動局と通話中、
タイミング設定手段で設定された設定値と検出手段で検
出された受信タイミングを比較し、その差を補正値とし
て移動局へ送信し、移動局は常時送信タイミング制御手
段で該補正値に基づいて送信タイミングを制御するの
で、下記のような優れた効果が期待される。As described above, according to the present invention, the base station is provided with the timing setting means for setting the reception timing and the detection means for detecting the reception timing of the signal from the mobile station. Providing transmission timing control means for controlling the timing, while the base station is talking with the mobile station,
The set value set by the timing setting means is compared with the reception timing detected by the detection means, and the difference is transmitted to the mobile station as a correction value, and the mobile station constantly transmits based on the correction value by the transmission timing control means. Since the timing is controlled, the following excellent effects are expected.
【００２１】移動局が通話中に移動し基地局からの距離
が変化しても送信タイミングがずれることはなくなり基
地局での受信エラ−も軽減される。Even if the mobile station moves during a call and the distance from the base station changes, the transmission timing does not deviate, and the reception error at the base station is reduced.
【００２２】また、タイミングのずれの検出はユニ−ク
ワ−ドＵＷで行ない特別なパタ−ンデ−タの発生を必要
としないので回路構成が容易になる。Further, since the detection of the timing deviation is performed by the uni-quad UW and the generation of special pattern data is not required, the circuit configuration becomes easy.
【図１】図１（ａ）は本発明の移動局の送信タイミング
補正方法を実施するための基地局の補正処理部の構成例
を示す図、図１（ｂ）は移動局の補正処理部の構成を示
す図である。FIG. 1A is a diagram showing a configuration example of a correction processing unit of a base station for implementing a mobile station transmission timing correction method of the present invention, and FIG. 1B is a mobile station correction processing unit. FIG. 3 is a diagram showing the configuration of FIG.
【図２】基地局における受信タイミングを示す図であ
る。FIG. 2 is a diagram illustrating reception timing in a base station.
【図３】通話チャネルのデ−タフォ−マットを示す図で
ある。FIG. 3 is a diagram showing a data format of a communication channel.
【図４】従来のＴＤＭＡアクイジション方式の構成例を
示す図である。FIG. 4 is a diagram illustrating a configuration example of a conventional TDMA acquisition system.
１ 基地局 ２ 移動局 １１ メッセ−ジ処理部 １２ 受信部 １２−１ タイミング検出部 １３ 送信部 １４ アンテナ ２１ メッセ−ジ処理部 ２２ 受信部 ２３ 送信タイミング制御部 ２４ 送信部 ２５ アンテナ REFERENCE SIGNS LIST 1 base station 2 mobile station 11 message processing unit 12 reception unit 12-1 timing detection unit 13 transmission unit 14 antenna 21 message processing unit 22 reception unit 23 transmission timing control unit 24 transmission unit 25 antenna
Claims (1)
いる移動局の送信タイミング補正方法において、 前記基地局には受信タイミングを設定するタイミング設
定手段及び前記移動局からの信号の受信タイミングを検
出する検出手段を設け、 前記移動局には送信タイミングを制御する送信タイミン
グ制御手段を設け、 前記基地局が前記移動局と通話中、前記タイミング設定
手段で設定された設定値と前記検出手段で検出された受
信タイミングを比較し、その差を補正値として該移動局
へ送信し、該移動局は常時前記送信タイミング制御手段
で該補正値に基づいて前記送信タイミングを制御するこ
とを特徴とする移動局の送信タイミング補正方法。1. A transmission timing correction method for a mobile station communicating with a base station in a time division multiplex communication system, wherein the base station has a timing setting means for setting a reception timing and a reception timing of a signal from the mobile station. The mobile station is provided with transmission timing control means for controlling transmission timing, and the base station is communicating with the mobile station, and the setting value set by the timing setting means and the detection means are provided. Comparing the reception timing detected in the above, and transmitting the difference to the mobile station as a correction value, the mobile station always controls the transmission timing based on the correction value in the transmission timing control means. Mobile station transmission timing correction method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10174961A JP2000013867A (en) | 1998-06-22 | 1998-06-22 | Mobile station transmission timing correction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10174961A JP2000013867A (en) | 1998-06-22 | 1998-06-22 | Mobile station transmission timing correction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000013867A true JP2000013867A (en) | 2000-01-14 |
Family
ID=15987774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10174961A Pending JP2000013867A (en) | 1998-06-22 | 1998-06-22 | Mobile station transmission timing correction method |
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| Country | Link |
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| JP (1) | JP2000013867A (en) |
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