JPH02164140A - Synchronization establishment method between base stations - Google Patents
Synchronization establishment method between base stationsInfo
- Publication number
- JPH02164140A JPH02164140A JP63318397A JP31839788A JPH02164140A JP H02164140 A JPH02164140 A JP H02164140A JP 63318397 A JP63318397 A JP 63318397A JP 31839788 A JP31839788 A JP 31839788A JP H02164140 A JPH02164140 A JP H02164140A
- Authority
- JP
- Japan
- Prior art keywords
- synchronization
- base station
- base stations
- signal
- clock
- 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
Links
- 238000000034 method Methods 0.000 title claims description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000010295 mobile communication Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 abstract description 14
- 238000010586 diagram Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、小ゾーン構成のディジタル移動通信における
基地局間のクロック同期、フレーム同期及びスーパフレ
ーム同期を、無線通信により確立する方法に関するもの
であって、移動機を仲介して基地局間の同期を確立する
ことにより、基地局間同期確立のための専用の送受信機
を必要とせず、また、基地局同士の無線通信が困難な基
地局間の同期確立を可能とするものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method of establishing clock synchronization, frame synchronization, and superframe synchronization between base stations in digital mobile communication with a small zone configuration by wireless communication. By establishing synchronization between base stations through mobile devices, there is no need for a dedicated transceiver for establishing synchronization between base stations, and base stations where wireless communication between base stations is difficult. This makes it possible to establish synchronization between
（従来の技術）
すべての基地局が基地局間同期確立のための専用の送受
信機を持ち、基地局同士が直接無線通信を行い、同期を
確立する方法が開発されている。(Prior Art) A method has been developed in which all base stations have dedicated transceivers for establishing synchronization between base stations, and the base stations directly communicate wirelessly with each other to establish synchronization.
（発明が解決しようとする課題）
しかし、基地局同士が直接無線通信を行う方法は、基地
局同士の見通しがな（、無線通信が困難な基地局間では
同期の確立ができないこと、基地局間同期確立のために
は基地局同士が直接無線通信を行う専用の送受信機が必
要なこと等の問題点がある。(Problems to be Solved by the Invention) However, the method of direct wireless communication between base stations has problems such as the fact that there is no line of sight between the base stations (and synchronization cannot be established between base stations where wireless communication is difficult). There are problems such as the need for a dedicated transceiver for direct wireless communication between base stations in order to establish synchronization.
本発明は上記問題点を解決することを目的とする。The present invention aims to solve the above problems.
（課題を解決するための手段）
本発明の特徴は、ゾーン構成のディジタル移動通信にお
ける基地局間の同期確立方法において、第１の無線基地
局は基準信号を無線送信し、移動機は、第１の無線基地
局が送信した基準信号を受信して再生して得られるタイ
ミングに同期して信号を無線送信し、第２の無線基地局
は、前記移動機が送信した信号を受信して再生して得ら
れるタイミングを送信信号の基準タイミングとすること
により、第１の無線基地局と第２の無線基地局の間のク
ロック同期、フレーム同期及びスーパフレーム同期の少
な（ともひとつを確立する基地局間同期確立方法にある
。(Means for Solving the Problems) A feature of the present invention is that in a method for establishing synchronization between base stations in zone-configured digital mobile communication, a first radio base station wirelessly transmits a reference signal, and a mobile station transmits a reference signal by radio. A first radio base station receives and reproduces a reference signal transmitted and transmits the signal wirelessly in synchronization with the timing obtained, and a second radio base station receives and reproduces the signal transmitted by the mobile device. By using the timing obtained by It is in the method of establishing synchronization between stations.
（作用）
本発明によると、移動機を仲介して基地局間の同期を確
立することにより、基地局間同期確立のための専用の送
受信機を必要とせず、また基地局同士の無線通信が困難
な場合にも基地局間同期の確立を可能とする。(Operation) According to the present invention, by establishing synchronization between base stations via a mobile device, there is no need for a dedicated transmitter/receiver for establishing synchronization between base stations, and wireless communication between base stations is possible. It is possible to establish synchronization between base stations even in difficult cases.
この方法による同期は、り、ロック同期、フレーム同期
、及びスーパフレーム同期が可能で、これらの同期を単
独または組合わせて行うことができる。Synchronization using this method can include lock synchronization, frame synchronization, and superframe synchronization, and these synchronizations can be performed alone or in combination.
（実施例）
添付図面は本発明の基地局間同期確立方法の一実施例を
示す図で、基地局間のクロック同期を取る方法の実施例
である。(Embodiment) The accompanying drawing is a diagram showing an embodiment of the method for establishing synchronization between base stations of the present invention, and is an embodiment of the method for synchronizing clocks between base stations.
基地局Ａはマスククロックを有する無線基地局、基地局
Ｂはマスククロツタをもたない通常の無線基地局とし、
移動機が基地局Ａと通信中であるとする。移動機は基地
局Ａが送信する信号を受信すると、受信信号のクロック
を再生し、送信データのタイミングを調整して、受信信
号のクロックに同期して信号を送信する。基地局Ｂは前
記移動機が送信する信号を受信すると、受信信号のクロ
ックを再生し、送信信号のクロックとして用いる。Base station A is a wireless base station with a mask clock, base station B is a normal wireless base station without a mask clock,
Assume that the mobile device is communicating with base station A. When the mobile device receives a signal transmitted by base station A, it reproduces the clock of the received signal, adjusts the timing of the transmitted data, and transmits the signal in synchronization with the clock of the received signal. When base station B receives the signal transmitted by the mobile station, it regenerates the clock of the received signal and uses it as the clock of the transmitted signal.
本実施例の方法により、基地局Ａと基地局Ｂの送信クロ
ックの同期を確立できる。By the method of this embodiment, synchronization of the transmission clocks of base station A and base station B can be established.
本実施例の方法は基地局同士の直接の無線通信を行わず
、無線基地局は移動機とのみ通信を行うため、基地局同
士の通信用の専用の送受信機を必要とせず、通常の通信
用の無線基地局対移動機の送受信機を利用できる。また
、基地局同士の見通しがなく、直接の無線通信が困難な
場合でも、移動機を仲介するため、基地局間同期の確立
が可能である。The method of this embodiment does not perform direct wireless communication between base stations, and the wireless base station only communicates with mobile devices, so there is no need for a dedicated transceiver for communication between base stations, and normal communication Wireless base station-to-mobile transceivers are available. Furthermore, even when there is no line-of-sight between base stations and direct wireless communication is difficult, synchronization between base stations can be established because mobile devices are used as intermediaries.
基地局間のフレーム同期を確立する場合は、前記実施例
において基地局Ａはマスクのフレーム同期タイミングを
有し、移動機及び基地局Ｂは第１図のクロック再生回路
のかわりにフレーム同期再生回路を用い、受信信号のフ
レーム同期を再生し、タイミング調整回路において受信
信号のフレームのタイミングに同期して送信信号のフレ
ームを構成して送信することにより、基地局Ａと基地局
Ｂの送信信号のフレーム同期を確立する。When establishing frame synchronization between base stations, in the embodiment described above, base station A has a masked frame synchronization timing, and the mobile station and base station B use a frame synchronization regeneration circuit instead of the clock regeneration circuit shown in FIG. The frame synchronization of the received signal is regenerated using a timing adjustment circuit, and the frame of the transmitted signal is constructed and transmitted in synchronization with the timing of the frame of the received signal. Establish frame synchronization.
基地局間のスーパフレーム同期を確立する場合も同様で
ある。The same applies when establishing superframe synchronization between base stations.
（発明の効果）
以上説明したように、本発明の基地局間同期確立方法は
小ゾーン構成のディジタル移動通信における基地局間の
クロック同期、フレーム同期及びスーパフレーム同期を
、無線通信により確立するための方法であり、本発明の
方法によれば、基地局間同期確立のための専用の送受信
機を必要とせず、また、基地局同士の直接の無線通信が
困難な場合にも基地局間同期を確立できる。(Effects of the Invention) As explained above, the method for establishing synchronization between base stations of the present invention is for establishing clock synchronization, frame synchronization, and superframe synchronization between base stations in digital mobile communication with a small zone configuration by wireless communication. According to the method of the present invention, there is no need for a dedicated transceiver for establishing synchronization between base stations, and even when direct wireless communication between base stations is difficult, synchronization between base stations can be achieved. can be established.
添付図面は本発明の基地局間同期確立方法の一実施例を
示す図である。
１・・・基地局Ａ、 ２・・・移動機、 ３・・・基地
局Ｂ、１１・・・基地局Ａのタイミング回路、１２・・
・基地局Ａの送信機１３・・・基地局Ａの受信機、２１
・・・移動機のタイミング回路、
２２・・・移動機の送信機、
２３・・・移動機の受信機、
２４・・・移動機のクロック再生回路、３１・・・基地
局Ｂのタイミング回路、３２・・・基地局Ｂの送信機、
３３・・・基地局Ｂの受信機、３４・・・基地局Ｂの
クロック再生回路。The accompanying drawing is a diagram showing an embodiment of the method for establishing synchronization between base stations of the present invention. DESCRIPTION OF SYMBOLS 1... Base station A, 2... Mobile device, 3... Base station B, 11... Timing circuit of base station A, 12...
- Transmitter 13 of base station A...Receiver of base station A, 21
... Timing circuit of mobile device, 22... Transmitter of mobile device, 23... Receiver of mobile device, 24... Clock recovery circuit of mobile device, 31... Timing circuit of base station B , 32... transmitter of base station B,
33... Receiver of base station B, 34... Clock recovery circuit of base station B.
Claims (1)
期確立方法において、 第１の無線基地局は基準信号を無線送信し、移動機は、
第１の無線基地局が送信した基準信号を受信して再生し
て得られるタイミングに同期して信号を無線送信し、 第２の無線基地局は、前記移動機が送信した信号を受信
して再生して得られるタイミングを送信信号の基準タイ
ミングとすることにより、第１の無線基地局と第２の無
線基地局の間のクロック同期、フレーム同期及びスーパ
フレーム同期の少なくともひとつを確立することを特徴
とする基地局間同期確立方法。[Claims] In a method for establishing synchronization between base stations in zone-configured digital mobile communication, a first wireless base station wirelessly transmits a reference signal, and a mobile device:
The first wireless base station receives and reproduces a reference signal, and transmits the signal wirelessly in synchronization with the timing obtained, and the second wireless base station receives the signal transmitted from the mobile device and transmits the signal wirelessly. At least one of clock synchronization, frame synchronization, and superframe synchronization between the first radio base station and the second radio base station is established by using the timing obtained by the reproduction as the reference timing of the transmission signal. Features: A method for establishing synchronization between base stations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63318397A JP2665497B2 (en) | 1988-12-19 | 1988-12-19 | How to establish synchronization between base stations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63318397A JP2665497B2 (en) | 1988-12-19 | 1988-12-19 | How to establish synchronization between base stations |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02164140A true JPH02164140A (en) | 1990-06-25 |
| JP2665497B2 JP2665497B2 (en) | 1997-10-22 |
Family
ID=18098699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63318397A Expired - Fee Related JP2665497B2 (en) | 1988-12-19 | 1988-12-19 | How to establish synchronization between base stations |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2665497B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0629910A (en) * | 1992-07-09 | 1994-02-04 | Nec Corp | Inter radio base station synchronization system |
| EP0806845A2 (en) * | 1996-04-30 | 1997-11-12 | Trw Inc. | Method and apparatus for synchronizing communications in a satellite based telecommunications system |
| US5722080A (en) * | 1994-06-30 | 1998-02-24 | Nec Corporation | Inter-station synchronization method |
| US6359869B1 (en) | 1997-06-25 | 2002-03-19 | Nec Corporation | Mobile communication system capable of establishing frame syncronization among base stations |
| EP1223684A2 (en) * | 1994-07-06 | 2002-07-17 | NTT Mobile Communications Network, Inc. | Mobile communication system using base station frequency correction scheme |
| US6477183B1 (en) | 1997-11-11 | 2002-11-05 | Nec Corporation | Economical synchronization system for asynchronous transfer mode mobile communication network without dependence on external system |
| JP2003509953A (en) * | 1999-09-17 | 2003-03-11 | クゥアルコム・インコーポレイテッド | System and method for synchronizing base stations in cellular and PCS networks |
| US6628628B1 (en) | 1999-03-19 | 2003-09-30 | Denso Corporation | Wireless communication having operation time correcting function |
| US7110781B1 (en) | 1999-08-24 | 2006-09-19 | Roke Manor Research Ltd. | Mobile telecommunications systems |
| GB2469676A (en) * | 2009-04-23 | 2010-10-27 | Percello Ltd | Femtocell handset assisted clock correction |
-
1988
- 1988-12-19 JP JP63318397A patent/JP2665497B2/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0629910A (en) * | 1992-07-09 | 1994-02-04 | Nec Corp | Inter radio base station synchronization system |
| US5722080A (en) * | 1994-06-30 | 1998-02-24 | Nec Corporation | Inter-station synchronization method |
| EP1223684A2 (en) * | 1994-07-06 | 2002-07-17 | NTT Mobile Communications Network, Inc. | Mobile communication system using base station frequency correction scheme |
| EP1223684A3 (en) * | 1994-07-06 | 2004-06-16 | NTT Mobile Communications Network, Inc. | Mobile communication system using base station frequency correction scheme |
| EP1526656A2 (en) * | 1996-04-30 | 2005-04-27 | Northrop Grumman Corporation | Method and apparatus for synchronizing communications in a satellite based telecommunications system |
| EP0806845A2 (en) * | 1996-04-30 | 1997-11-12 | Trw Inc. | Method and apparatus for synchronizing communications in a satellite based telecommunications system |
| EP0806845A3 (en) * | 1996-04-30 | 2002-01-02 | Trw Inc. | Method and apparatus for synchronizing communications in a satellite based telecommunications system |
| EP1526656A3 (en) * | 1996-04-30 | 2005-06-15 | Northrop Grumman Corporation | Method and apparatus for synchronizing communications in a satellite based telecommunications system |
| US6359869B1 (en) | 1997-06-25 | 2002-03-19 | Nec Corporation | Mobile communication system capable of establishing frame syncronization among base stations |
| US6477183B1 (en) | 1997-11-11 | 2002-11-05 | Nec Corporation | Economical synchronization system for asynchronous transfer mode mobile communication network without dependence on external system |
| US6628628B1 (en) | 1999-03-19 | 2003-09-30 | Denso Corporation | Wireless communication having operation time correcting function |
| US7110781B1 (en) | 1999-08-24 | 2006-09-19 | Roke Manor Research Ltd. | Mobile telecommunications systems |
| JP2003509953A (en) * | 1999-09-17 | 2003-03-11 | クゥアルコム・インコーポレイテッド | System and method for synchronizing base stations in cellular and PCS networks |
| GB2469676A (en) * | 2009-04-23 | 2010-10-27 | Percello Ltd | Femtocell handset assisted clock correction |
| GB2469676B (en) * | 2009-04-23 | 2011-11-30 | Percello Ltd | Femtocell handset assisted clock correction |
| US8306527B2 (en) | 2009-04-23 | 2012-11-06 | Percello Ltd. | Femtocell handset assisted clock correction |
| US9084194B2 (en) | 2009-04-23 | 2015-07-14 | Broadcom Semiconductors Israel Ltd. | Femtocell handset assisted clock correction |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2665497B2 (en) | 1997-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2157727C (en) | Method and apparatus for providing a synchronous communication environment | |
| KR0149951B1 (en) | Method and apparatus for increasing spectrum efficiency | |
| EP1892868B1 (en) | CDMA communication method for adjusting transmission timing of signals from mobile station to base station, and base station therefore | |
| US6859647B2 (en) | Interference elimination system and interference eliminating method | |
| AU2001289561A1 (en) | Method for transmitting signals in a radio communications system | |
| JPH02164140A (en) | Synchronization establishment method between base stations | |
| DE69933420D1 (en) | DATA TRANSMISSION AND RADIO SYSTEM | |
| KR100272015B1 (en) | Transmission systems and subscriber devices | |
| FR2762168B1 (en) | MOBILE STATION INTEGRATING RADIOCOMMUNICATION AND LOCATION FUNCTIONS, AND CORRESPONDING METHOD FOR RECEIVING LOCATION SIGNALS BY A MOBILE STATION | |
| KR980007117A (en) | Signal transmission method and apparatus in code division multiple access mobile communication system | |
| JP2004229242A (en) | Repeating apparatus and repeating method | |
| JP2653004B2 (en) | Wireless communication system | |
| JPH0823319A (en) | Synchronization control system | |
| JPH09148977A (en) | Radio communication system | |
| KR920017383A (en) | How to Transfer Time Alignment in Mobile Radiotelephone System Using Split Window | |
| JPH0314854Y2 (en) | ||
| JP2943398B2 (en) | Transmission equipment | |
| JPH0575520A (en) | Radio communication system | |
| JPH0344462B2 (en) | ||
| JPH04246923A (en) | Time division communication system | |
| JPS5930332A (en) | Radio transmission system | |
| JPH07336346A (en) | Control signal transmitter and radio communication system using the same | |
| KR980007074A (en) | Network Synchronization Method for Satellite Communication System and Its Apparatus | |
| JPH02119332A (en) | Time divisional multi-way multiplex communication system with automatic bit position alignment function | |
| JPH0456545A (en) | Time synchronization control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |