JPH0815345B2 - Phase adjustment method in mobile communication system - Google Patents
Phase adjustment method in mobile communication systemInfo
- Publication number
- JPH0815345B2 JPH0815345B2 JP61227046A JP22704686A JPH0815345B2 JP H0815345 B2 JPH0815345 B2 JP H0815345B2 JP 61227046 A JP61227046 A JP 61227046A JP 22704686 A JP22704686 A JP 22704686A JP H0815345 B2 JPH0815345 B2 JP H0815345B2
- Authority
- JP
- Japan
- Prior art keywords
- station
- control
- control signal
- radio base
- time difference
- 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.)
- Expired - Lifetime
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Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は移動通信システムにおける位相調整方式に係
り、特に全無線基地局が受信する制御信号の位相を一致
させる位相調整方式に関する。Description: TECHNICAL FIELD The present invention relates to a phase adjustment method in a mobile communication system, and more particularly to a phase adjustment method for matching the phases of control signals received by all radio base stations.
（従来の技術） 周知のように、移動通信システムは、１つの制御局
と、この制御局に通信回線を介して接続され各無線ゾー
ン毎に配置される複数の無線基地局と、移動機とを備え
る。この種の移動通信システムでは制御局からの制御信
号を全無線基地局が同一無線周波数の制御チャネルを用
いて移動機へ同時に送信する際に、その制御信号が同期
して移動機へ到達するように制御信号の位相調整を行う
ようにしている。(Prior Art) As is well known, a mobile communication system includes one control station, a plurality of radio base stations connected to the control station via a communication line and arranged in each radio zone, and a mobile device. Equipped with. In this type of mobile communication system, when all radio base stations simultaneously transmit control signals from control stations to mobile stations using control channels of the same radio frequency, the control signals should reach the mobile stations in synchronization. The phase of the control signal is adjusted.
従来の位相調整方式としては、例えば隣接する２つの
無線基地局間において一方が基準局、他方が調整局とな
って従属的に位相調整を行う方式が知られている。As a conventional phase adjustment method, for example, a method is known in which, between two adjacent wireless base stations, one serves as a reference station and the other serves as an adjustment station to perform phase adjustment in a dependent manner.
（発明が解決しようとする問題点） しかし、従来の従属的な位相調整方式にあっては、調
整誤差の蓄積が避けられないので、例えば無線ゾーンが
広域に分散するなどして、位相調整のルートが環状にな
る場合には、２つの隣接する無線基地局として環の開始
位置と終了位置にある無線基地局間では位相差が大きく
なり、位相調整ができない場合があるという問題点があ
る。(Problems to be Solved by the Invention) However, in the conventional subordinate phase adjustment method, the accumulation of adjustment errors is unavoidable. When the route is circular, there is a problem that the phase difference may become large between the wireless base stations at the start position and the end position of the ring as two adjacent wireless base stations, and phase adjustment may not be possible.
本発明は、このような従来の問題点に鑑みなされたも
ので、調整誤差の蓄積を生じさせないで位相調整をなし
得る移動通信システムにおける位相調整方式を提供する
ことを目的とする。The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a phase adjustment method in a mobile communication system capable of performing phase adjustment without accumulating adjustment errors.
（問題点を解決するための手段） 前記目的を達成するために、本発明の移動通信システ
ムにおける位相調整方式は次の如き構成を有する。(Means for Solving the Problems) In order to achieve the above object, the phase adjustment method in the mobile communication system of the present invention has the following configuration.
即ち、本発明の移動通信システムにおける位相調整方
式は、１つの制御局と、この制御局へ通信回線を介して
接続される各無線ゾーン毎に配置される複数の無線基地
局と、移動機とを備えた移動通信システムにおいて、制
御局からの制御信号を全無線基地局が同一周波数の制御
チャネルで移動機へ同時に送信する際に、その制御信号
が同期して移動機へ到達するように制御信号の位相調整
を行う位相調整方式であって；前記制御局および前記複
数の無線基地局へ供給するための標準電波を発生する標
準電波発生手段を設けるとともに；前記無線基地局は、
前記標準電波と、制御局から通信回線を介して伝送され
る制御信号との両受信タイミングの時間差を検出し、そ
れを通信回線を介して制御局へ通知する検出側通知手
段；を備え、かつ前記制御局は、前記制御信号の自局受
信タイミングと前記標準電波の受信タイミングの時間差
を検出する検出手段と；前記検出した時間差と前記通知
された時間差とに基づき各無線基地局毎に遅延量を算出
する算出手段と；各無線基地局へ伝送する前記制御信号
を前記算出した遅延量に従って遅延させる遅延手段と；
を備えたことを特徴とする。That is, the phase adjustment method in the mobile communication system according to the present invention includes one control station, a plurality of radio base stations arranged in each radio zone connected to the control station via a communication line, and a mobile station. In a mobile communication system equipped with, when all radio base stations simultaneously transmit control signals from control stations to mobile stations on the control channel of the same frequency, control is performed so that the control signals reach the mobile stations in synchronization. A phase adjusting method for adjusting the phase of a signal; and providing a standard radio wave generating unit for generating a standard radio wave to be supplied to the control station and the plurality of radio base stations;
A detection side notifying means for detecting the time difference between the reception timings of the standard radio wave and the control signal transmitted from the control station via the communication line, and notifying the time difference to the control station via the communication line; The control station detects the time difference between the reception timing of the control signal and the reception timing of the standard radio wave; a delay amount for each radio base station based on the detected time difference and the notified time difference. Calculating means for calculating, and delay means for delaying the control signal to be transmitted to each radio base station according to the calculated delay amount;
It is characterized by having.
（作 用） 次に、前記構成を有する本発明の移動通信システムに
おける位相調整方式の作用を説明する。(Operation) Next, the operation of the phase adjustment method in the mobile communication system of the present invention having the above configuration will be described.
標準電波発生手段は、制御局および複数の無線基地局
へ標準電波を供給している。The standard radio wave generating means supplies the standard radio wave to the control station and the plurality of radio base stations.
前記無線基地局では、検出通知手段が、前記標準電波
と、制御局から通信回線を介して伝送される制御信号と
の両受信タイミングの時間差を検出し、それを通信回線
を介して制御局へ通知する。In the wireless base station, the detection notifying means detects a time difference between both reception timings of the standard radio wave and a control signal transmitted from the control station via the communication line, and sends it to the control station via the communication line. Notice.
前記制御局では、各無線基地局へ伝送する前記制御信
号の自局受信タイミングと前記標準電波の受信タイミン
グの時間差を検出し（検出手段）、前記検出した時間差
と前記通知された時間差とに基づき各無線基地局毎に遅
延量を算出し（算出手段）、各無線基地局へ伝送する前
記制御信号を前記算出した遅延量に従って遅延させる
（遅延手段）。In the control station, the time difference between the reception timing of the control signal transmitted to each radio base station and the reception timing of the standard radio wave is detected (detection means), and based on the detected time difference and the notified time difference. A delay amount is calculated for each radio base station (calculation means), and the control signal transmitted to each radio base station is delayed according to the calculated delay amount (delay means).
その結果、制御局から複数の無線基地局へ送信される
制御信号の位相を複数の無線基地局において同一とする
ことができる。従って、本発明の位相調整方式によれ
ば、従来の如き調整誤差の蓄積を生じさせることがない
ので、無線ゾーンが広域に分散し大規模化しても支障な
く位相調整をなし得る効果がある。As a result, the phases of the control signals transmitted from the control station to the plurality of radio base stations can be the same in the plurality of radio base stations. Therefore, according to the phase adjustment method of the present invention, accumulation of adjustment error unlike the conventional case does not occur, and thus there is an effect that the phase adjustment can be performed without trouble even if the wireless zones are spread over a wide area and become large in size.
（実 施 例） 以下、本発明の実施例を図面を参照して説明する。第
１図は、移動通信システムのうち本発明の位相調整方式
を中心に示す全体構成図である。(Examples) Examples of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram mainly showing the phase adjustment method of the present invention in a mobile communication system.
本発明の位相調整方式では、１つの制御局１と、この
制御局１へ通信回線２を介して接続され無線ゾーン３、
同４毎に配置される無線基地局Ａ、同Ｂと、移動機６と
を備えた通常の移動通信システムの構成に加えて、標準
電波発生回路７を設けてある。なお、無線ゾーン５にお
いては制御局１自身が無線基地局として機能する。In the phase adjustment method of the present invention, one control station 1 and a wireless zone 3 connected to the control station 1 via a communication line 2
A standard radio wave generation circuit 7 is provided in addition to the configuration of a normal mobile communication system including the radio base stations A and B arranged for each unit 4 and the mobile unit 6. In the wireless zone 5, the control station 1 itself functions as a wireless base station.
標準電波発生回路７は、制御局１および各無線基地局
へ標準電波を供給する。この標準電波としては標準時間
間隔や標準時刻を一般に通報する放送電波が利用できる
ので、標準電波発生回路７は新設したもの、あるいは既
存の設備のいずれか一方ということになる。この実施例
では、標準電波の発生間隔は、第２図（１）に示す如
く、1000msである。The standard radio wave generation circuit 7 supplies a standard radio wave to the control station 1 and each radio base station. As the standard radio wave, a broadcast radio wave that generally informs the standard time interval and standard time can be used, and therefore the standard radio wave generation circuit 7 is either a newly installed one or an existing facility. In this embodiment, the standard radio wave generation interval is 1000 ms as shown in FIG.
無線基地局Ａ、同Ｂは、それぞれ送受信部８と、制御
部９を基本的に備える。送受信部８は、前記標準電波を
受信してそれを制御部９へ伝達するとともに、制御局１
から下り回線2aを介して伝送されてくる制御信号を移動
機６へ送信し、また移動機６の送信電波を受信してそれ
を制御部９へ伝達することを行う。制御部９は当該無線
基地局の諸機能を統括制御するものであるが、本発明で
は、送受信部８から入力した標準電波受信通知のタイミ
ング（即ち、標準電波の受信タイミング）と、制御局１
から下り回線2aを介して伝送される制御信号の受信タイ
ミングとの時間差τＡ、τＢ（第２図（３）（４））を
検出し、それを上り回線2bを介して制御局１へ通知する
検出通知手段の動作を行う。なお、制御信号には位相調
整のための特別の検出符号が設けてある。The radio base stations A and B each basically include a transmission / reception unit 8 and a control unit 9. The transmission / reception unit 8 receives the standard radio wave and transmits it to the control unit 9, and at the same time, the control station 1
The control signal transmitted from the mobile station 6 to the mobile station 6 is transmitted to the mobile station 6, and the radio wave transmitted from the mobile station 6 is received and transmitted to the control section 9. Although the control unit 9 centrally controls various functions of the radio base station, in the present invention, the timing of the standard radio wave reception notification (that is, the reception timing of the standard radio wave) input from the transmission / reception unit 8 and the control station 1
Detects the time difference τ A , τ B (FIG. 2 (3) (4)) from the reception timing of the control signal transmitted from the downlink 2a to the control station 1 via the uplink 2b. The detection notification means for notifying is operated. The control signal is provided with a special detection code for phase adjustment.
制御局１は、送受信部11と、制御部12と、各無線基地
局に対応して設けられる遅延部13a、同13b、同13cとを
基本的に備え、遅延部13aは自局用、遅延部13bは無線基
地局Ａ用遅延部13cは無線基地局Ｂ用となっている。The control station 1 basically includes a transmission / reception unit 11, a control unit 12, and delay units 13a, 13b, and 13c provided corresponding to each radio base station, and the delay unit 13a is for its own station and delay. The section 13b is for the radio base station A and the delay section 13c is for the radio base station B.
送受信部11は、前記標準電波を受信してそれを制御部
12へ伝達するとともに、遅延部13aで適宜時間遅延させ
た制御信号を無線ゾーン５へ放送し、また無線ゾーン５
内の移動機からの送信電波を受信しそれを制御部12へ伝
達する。The transmitter / receiver 11 receives the standard radio wave and controls it.
The control signal is transmitted to the wireless zone 5 while being transmitted to the wireless zone 5 while being appropriately transmitted to the wireless zone 5 by the delay unit 13a.
It receives a radio wave transmitted from a mobile device inside and transmits it to the control unit 12.
制御部12は、制御局および無線基地局の諸機能を統括
制御するものであるが、本発明ではさらに次の諸機能を
備える。まず、位相調整の基準局として、送受信部11か
ら入力した標準電波受信通知のタイミング（即ち、標準
電波の受信タイミング）と、遅延部13a（予め数百msの
大きな遅延量に設定してある）を介して入力する制御信
号の受信タイミング、即ち制御信号の自局受信タイミン
グとの時間差τＯ（第２図（２））を検出する（検出手
段の動作）。次いで、前記検出した時間差τＯと前記通
知された時間差τＡ、同τＢとに基づき各無線基地局毎
に加える遅延量（τＯ−τA,τＯ−τＢ）を算出する
（算出手段の動作）。The control unit 12 centrally controls various functions of the control station and the radio base station, but the present invention further includes the following various functions. First, as a reference station for phase adjustment, the timing of the standard radio wave reception notification input from the transmission / reception unit 11 (that is, the reception timing of the standard radio wave) and the delay unit 13a (previously set to a large delay amount of several hundred ms) The reception timing of the control signal input via the control signal, that is, the time difference τ O ((2) in FIG. 2) between the control signal and the reception timing of the local station is detected (operation of the detection means). Then, based on the detected time difference τ O and the notified time differences τ A and τ B , the delay amount (τ O −τ A , τ O −τ B ) added to each radio base station is calculated (calculation). Operation of means).
そして、遅延部13b、同13cの各遅延量にτＯ−τＡ、
τＯ−τＢを加えてそれぞれ設定する（遅延手段の動
作）。Then, τ O −τ A is added to the delay amounts of the delay units 13b and 13c,
τ O −τ B is added and set (operation of the delay means).
その結果、基準局では、遅延部13aの遅延量で定まる
時間経過後に制御信号が送受信部11へ到達し、また無線
基地局Ａでは遅延部13bの遅延量で定まる時間経過後
に、無線基地局Ｂでは遅延部13cの遅延量で定まる時間
経過後に制御信号がそれぞれ送受信部８へ到達し、全て
同一の位相でそれぞれの無線ゾーンへ向けて送信できる
ことになる。As a result, in the reference station, the control signal reaches the transmission / reception unit 11 after the time determined by the delay amount of the delay unit 13a has passed, and in the radio base station A, after the time determined by the delay amount of the delay unit 13b has passed, the control signal of the radio base station B has passed. After a lapse of time determined by the delay amount of the delay unit 13c, the control signals reach the transmitting / receiving unit 8 and can be transmitted to the respective radio zones in the same phase.
（発明の効果） 以上詳述したように、本発明の移動通信システムにお
ける位相調整方式によれば、標準電波発生手段を設け、
無線基地局間で位相を合わせる位相調整において、制御
局および複数の無線基地局で、標準電波を受信したタイ
ミングと制御信号を検出したタイミングとの時間差を検
出してそれを制御局へ通知し、制御局では、制御局で測
定した時間差と複数の無線基地局から通知された時間差
とから任意の無線基地局用の遅延量を算出し、各無線基
地局へ伝送する前記制御信号を前記算出した遅延量に従
って遅延させるようにしたので、制御局から複数の無線
基地局へ送信される制御信号の位相を複数の無線基地局
において同一とすることができる。従って、本発明の位
相調整方式によれば、従来の如き調整誤差の蓄積を生じ
させることがないので、無線ゾーンが広域に分散し大規
模化しても支障なく位相調整をなし得る効果がある。(Effects of the Invention) As described in detail above, according to the phase adjustment method in the mobile communication system of the present invention, the standard radio wave generating means is provided,
In the phase adjustment to match the phase between the radio base stations, the control station and the plurality of radio base stations, the control station is notified of the time difference between the timing of receiving the standard radio wave and the timing of detecting the control signal, The control station calculates the delay amount for any radio base station from the time difference measured by the control station and the time difference notified from the plurality of radio base stations, and calculates the control signal to be transmitted to each radio base station. Since the delay is made according to the delay amount, the phases of the control signals transmitted from the control station to the plurality of radio base stations can be made the same in the plurality of radio base stations. Therefore, according to the phase adjustment method of the present invention, accumulation of adjustment error unlike the conventional case does not occur, and thus there is an effect that the phase adjustment can be performed without trouble even if the wireless zones are spread over a wide area and become large in size.
第１図は本発明の位相調整方式の構成例を示す全体構成
図、第２図は位相調整のタイミングチャートである。 １……制御局、２……通信回線（2a…下り、2b…上
り）、3,4,5……無線ゾーン、６……移動機、７……標
準電波発生回路、8,11……送受信部、9,12…制御部、13
a,13b,13c……遅延部。FIG. 1 is an overall configuration diagram showing a configuration example of a phase adjustment method of the present invention, and FIG. 2 is a timing chart of phase adjustment. 1 ... control station, 2 ... communication line (2a ... down, 2b ... up), 3,4,5 ... radio zone, 6 ... mobile unit, 7 ... standard radio wave generation circuit, 8,11 ... Transmitter / receiver unit, 9, 12 ... Control unit, 13
a, 13b, 13c …… Delay part.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 村瀬 淳 神奈川県横須賀市武１丁目2356番地 日本 電信電話株式会社通信網第二研究所内 審査官 清水 稔 (56)参考文献 特開 昭63−38334（ＪＰ，Ａ) 特開 昭58−162148（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Jun Murase 1-2356 Takeshi, Yokosuka City, Kanagawa Pref. Minoru Shimizu (56) References, Communication Network Research Laboratories, Nippon Telegraph and Telephone Corporation (56) Reference JP-A-63-38334 ( JP, A) JP-A-58-162148 (JP, A)
Claims (1)
介して接続され各無線ゾーン毎に配置される複数の無線
基地局と、移動機とを備えた移動通信システムにおい
て、制御局からの制御信号を全無線基地局が同一周波数
の制御チャネルで移動機へ同時に送信する際に、その制
御信号が同期して移動機へ到達するように制御信号の位
相調整を行う位相調整方式であって；前記制御局および
前記複数の無線基地局へ供給するための標準電波を発生
する標準電波発生手段を設けるとともに；前記無線基地
局は、前記標準電波と、制御局から通信回線を介して伝
送される制御信号との両受信タイミングの時間差を検出
し、それを通信回線を介して制御局へ通知する検出通知
手段；を備え、かつ前記制御局は、前記制御信号の自局
受信タイミングと前記標準電波の受信タイミングの時間
差を検出する検出手段と；前記検出した時間差と前記通
知された時間差とに基づき各無線基地局毎に遅延量を算
出する算出手段と；各無線基地局へ伝送する前記制御信
号を前記算出した遅延量に従って遅延させる遅延手段
と；を備えたことを特徴とする移動通信システムにおけ
る位相調整方式。1. A mobile communication system comprising a control station, a plurality of radio base stations connected to the control station via a communication line and arranged in each radio zone, and a control station in a mobile communication system. A phase adjustment method that adjusts the control signal phase so that the control signals arrive at the mobile station in synchronization when all the wireless base stations simultaneously transmit the control signal to the mobile station on the same frequency control channel. A standard radio wave generating means for generating a standard radio wave to be supplied to the control station and the plurality of radio base stations is provided; and the radio base station is connected to the standard radio wave via a communication line from the control station. A detection notification means for detecting a time difference between the reception timing of the control signal to be transmitted and the reception timing of the control signal, and notifying the control station of the difference between the reception timing of the control signal and the reception timing of the control signal. Before Detecting means for detecting a time difference between reception timings of standard radio waves; calculating means for calculating a delay amount for each radio base station based on the detected time difference and the notified time difference; and transmitting to each radio base station And a delay unit that delays the control signal according to the calculated delay amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61227046A JPH0815345B2 (en) | 1986-09-25 | 1986-09-25 | Phase adjustment method in mobile communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61227046A JPH0815345B2 (en) | 1986-09-25 | 1986-09-25 | Phase adjustment method in mobile communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6382028A JPS6382028A (en) | 1988-04-12 |
| JPH0815345B2 true JPH0815345B2 (en) | 1996-02-14 |
Family
ID=16854677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61227046A Expired - Lifetime JPH0815345B2 (en) | 1986-09-25 | 1986-09-25 | Phase adjustment method in mobile communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0815345B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5201061A (en) * | 1990-07-23 | 1993-04-06 | Motorola, Inc. | Method and apparatus for synchronizing simulcast systems |
| GB2271248B (en) * | 1992-10-05 | 1997-04-02 | Motorola Inc | Simulcast transmission system |
| JP4671749B2 (en) * | 2005-04-26 | 2011-04-20 | 株式会社エヌ・ティ・ティ・ドコモ | Transceiver, mobile communication system, and transmission / reception method |
-
1986
- 1986-09-25 JP JP61227046A patent/JPH0815345B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6382028A (en) | 1988-04-12 |
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