WO2007124995A1 - Verfahren zur synchronisation von baugruppen einer basisstation - Google Patents
Verfahren zur synchronisation von baugruppen einer basisstation Download PDFInfo
- Publication number
- WO2007124995A1 WO2007124995A1 PCT/EP2007/053127 EP2007053127W WO2007124995A1 WO 2007124995 A1 WO2007124995 A1 WO 2007124995A1 EP 2007053127 W EP2007053127 W EP 2007053127W WO 2007124995 A1 WO2007124995 A1 WO 2007124995A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clock signal
- frame
- rec
- module
- time
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0685—Clock or time synchronisation in a node; Intranode synchronisation
- H04J3/0691—Synchronisation in a TDM node
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2662—Arrangements for Wireless System Synchronisation
- H04B7/2671—Arrangements for Wireless Time-Division Multiple Access [TDMA] System Synchronisation
- H04B7/2678—Time synchronisation
- H04B7/2687—Inter base stations synchronisation
- H04B7/2693—Centralised synchronisation, i.e. using external universal time reference, e.g. by using a global positioning system [GPS] or by distributing time reference over the wireline network
Definitions
- the invention relates to a method for synchronizing modules of a base station to a reference clock signal.
- the oscillator is tuned via a phase locked loop to a reference signal of a generally external reference source.
- GPS Global Positioning System
- the GPS antenna is usually arranged near a transmitter-receiving antenna of the base station.
- the received GPS signal then usually has to travel a longer distance using a dedicated one
- Ubertragungslim or line are passed to the master oscillator. This is due to the power length generally under a considerable signal attenuation. In addition, high costs are caused by the line length and by an additional line installation effort.
- a first module called a "radio head” is arranged close to the antenna, while further modules are arranged remote from the antenna. Accordingly, it is necessary to synchronize both the remote first module and the remaining modules with the reference signal with high accuracy in time.
- a local clock signal and a frame are formed by a first module.
- the clock signal and the frame are transmitted to a second module using a predictable-term synchronous transmission.
- the second module receives a reference clock signal and determines a phase difference and a time difference between the transmitted clock signal on the one hand and the reference clock signal on the other hand.
- the phase difference and the time difference are transmitted from the second module to the first module via a connection with no predictable delay.
- the first module uses the phase difference and the time difference to determine a manipulated variable, wherein the manipulated variable controls the formation of the local clock signal such that the first and the second module are time-synchronized.
- the time synchronization takes place using a CPRI interface or a CPRI network, which is present in any case between the modules for the transmission of data and control signals.
- FIG. 2 shows a second exemplary embodiment of the inventive method.
- FIG. 1 shows a first exemplary embodiment of the inventive method.
- a first module REC and a second module RE of a base station BTS are preferably connected to one another via a network CPRI.
- the CPRI network enables synchronous transmission of signals with a predictable delay between the modules RE and REC.
- the first subassembly REC includes an oscillator VCXO and a frame generator RG, with the aid of the oscillator
- VCXO a local clock signal CLK and with the aid of the frame generator RG a frame frame is formed.
- the local clock signal CLK and the frame frame are transmitted to a second module RE using the predictive-time synchronous transmission.
- a layerl protocol of the CPRI network is preferably used.
- the second module RE receives a reference clock signal GPS via a GPS receiver.
- the second module RE includes a phase indicator PD and a time indicator TD, with which a phase difference PDIF and a time difference TDIF between the transmitted Clock signal CLK on the one hand and the reference clock signal GPS on the other hand is determined.
- phase difference PDIF and the time difference TDIF are transmitted from the second module RE to the first module REC via a connection with no predictable delay.
- This transmission is preferably performed as packet data transmission using an internet protocol.
- connection is designed without predictable runtime as a control & management channel (C & M) of the CPRI network.
- C & M control & management channel
- a temporal frequency is determined, with which the measurement results of phase difference PDIF and time difference TDIF are received by the first module REC. This frequency is also taken into account when determining the manipulated variable.
- the times of the measurements of the phase difference PDIF and the time difference TDIF are identified with a frame number and transmitted to the first module REC in order to be able to take these times into account when determining the manipulated variable of the oscillator VCXO.
- the GPS receiver for example, transmits a time signal GPS in the form of one pulse per second to the second module RE.
- the oscillator VCXO is preceded by a loop filter LF for forming the manipulated variable SG, to which the time difference TDIF and the phase difference PDIF are applied.
- the oscillator VCXO can be designed, for example, as oven quartz.
- the master oscillator VCXO is the output side connected to a counting unit "frame counter and t ⁇ ", the oscillation periods of the master oscillator VCXO first counts within a frame "frame”.
- a UMTS frame "frame” of length 10 ms is used.
- the counter “frame counter and t ⁇ ” counts in a first part from a value "0" to "383999” and then starts counting again from the value "0".
- the counting unit "frame counter and t ⁇ ” has a first counter Z1.
- frame "frame” is now counted by the counting unit “frame counter and t ⁇ ", wherein a second counter Z2 of the counting unit “frame counter and t ⁇ ” is increased.
- the increase takes place whenever the first counter Z1 jumps from the above-mentioned value "383999” to the value "0".
- the second counter Z2 would count from value "0" to a value "4095", thereby indexing a "Node B frame number, BFN" defined in 3GPP TS 25.402 and used in the CPRI standard ,
- a time variable t ⁇ is managed.
- the time variable t ⁇ is always increased by a value of "40.96 sec" when the second payer Z2 jumps from the value "4095” to the value "0".
- the first counter Z1 which pays the values from “0” to "383999”
- the second counter Z2 which pays the values from "0" to "4095”
- the time variable t ⁇ represent a time system.
- the time variable t.sub. ⁇ is transmitted to the time indicator TD, this transmission preferably taking place via the CPRI_channel "C & M".
- the time system can be related to a weekly time "GPS time of week” tl or to a GPS time tl or to the coordinated time of day (UTC). Two exemplary options are described in more detail below:
- the time indicator TD the Zahlerstande of the first payer Zl and the second payer Z2 via the CPRI frame information BFN according to the standard CPRI, version V2.0, transmitted.
- the time variable t ⁇ is transmitted to the time indicator TD, this transmission preferably taking place via the CPRI_channel "C & M".
- the counting unit "frame counter and t ⁇ " is deliberately reset due to information of the time indicator TD.
- a counter reading of the first counter Z1 and of the second counter Z2 can also be unambiguously defined for each GPS time t1, the count of the second counter being defined via the "Node B frame number, BFN".
- the targeted reset takes place in such a way that the counter readings of the first and the second counter are set to the value "0" defined at a time that is the same for all base stations.
- a time "Monday, 01.01.2007, 0:00 '00' 'clock" is selected.
- the reset can not only on
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Mobile Radio Communication Systems (AREA)
- Electric Clocks (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07727599A EP2013995B1 (de) | 2006-04-26 | 2007-03-30 | Verfahren zur synchronisation von baugruppen einer basisstation |
| US12/226,724 US8244304B2 (en) | 2006-04-26 | 2007-03-30 | Method for synchronization of assemblies in a base station |
| AT07727599T ATE517476T1 (de) | 2006-04-26 | 2007-03-30 | Verfahren zur synchronisation von baugruppen einer basisstation |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006019475.6 | 2006-04-26 | ||
| DE102006019475A DE102006019475B4 (de) | 2006-04-26 | 2006-04-26 | Verfahren zur Synchronisation von Baugruppen einer Basisstation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007124995A1 true WO2007124995A1 (de) | 2007-11-08 |
Family
ID=38137558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2007/053127 Ceased WO2007124995A1 (de) | 2006-04-26 | 2007-03-30 | Verfahren zur synchronisation von baugruppen einer basisstation |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US8244304B2 (de) |
| EP (1) | EP2013995B1 (de) |
| CN (2) | CN104469929A (de) |
| AT (1) | ATE517476T1 (de) |
| DE (1) | DE102006019475B4 (de) |
| RU (1) | RU2438247C2 (de) |
| WO (1) | WO2007124995A1 (de) |
| ZA (1) | ZA200808899B (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009109088A1 (zh) * | 2008-03-03 | 2009-09-11 | 中兴通讯股份有限公司 | 时钟同步系统 |
| CN101982008A (zh) * | 2008-03-31 | 2011-02-23 | 爱立信电话股份有限公司 | 基于无线电设备(re)的同步 |
| CN101588588B (zh) * | 2008-05-20 | 2012-08-08 | 富士通株式会社 | 无线基站系统、控制设备以及无线设备 |
| US8654796B2 (en) | 2008-03-03 | 2014-02-18 | Zte Corporation | System for synchronizing clock |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2099146A1 (de) * | 2008-03-04 | 2009-09-09 | Cambridge Positioning Systems Limited | Netzwerkuhr für Mobiltelefone |
| DE102008046737B4 (de) * | 2008-09-11 | 2010-12-30 | Siemens Aktiengesellschaft | Verfahren und System zum Synchronisieren der Taktfrequenzen eines Senders und eines Empfängers |
| EP2579678B1 (de) | 2010-05-31 | 2018-02-28 | Huawei Technologies Co., Ltd. | Basisstation und taktsynchronisationsverfahren dafür |
| CN101868055B (zh) * | 2010-05-31 | 2012-08-15 | 华为技术有限公司 | 一种无线基站 |
| JP5770309B2 (ja) * | 2011-01-26 | 2015-08-26 | 華為技術有限公司Huawei Technologies Co.,Ltd. | 時間同期を実施する方法及び装置 |
| US9036544B2 (en) * | 2011-10-25 | 2015-05-19 | Telefonaktiebolaget L M Ericsson (Publ) | Delay compensation during synchronization in a base station in a cellular communication network |
| JP2014159685A (ja) * | 2013-02-19 | 2014-09-04 | Tokai Rika Co Ltd | 伝搬時間測定装置 |
| US9204312B2 (en) | 2013-11-27 | 2015-12-01 | Freescale Semiconductor, Inc. | Method for adding leaf node to multi-node base station |
| US9094908B1 (en) | 2014-04-22 | 2015-07-28 | Freescale Semiconductor, Inc. | Device and method for synchronization in a mobile communication system |
| US9521636B2 (en) | 2014-04-22 | 2016-12-13 | Nxp Usa, Inc. | Synchronization circuitry, common public radio interface enable device, and a method of synchronizing a synchronized clock signal of a second transceiver to a clock of a first transceiver |
| PL225485B1 (pl) * | 2014-11-19 | 2017-04-28 | Inst Technik Innowacyjnych Emag | Sposób i układ do synchronizacji sejsmicznych i sejsmoakustycznych sieci pomiarowych, zwłaszcza kopalnianych sieci iskrobezpiecznych |
| WO2016201619A1 (zh) * | 2015-06-16 | 2016-12-22 | 华为技术有限公司 | 一种信号转换方法,信号转换装置以及系统 |
| CN105577650A (zh) * | 2015-12-16 | 2016-05-11 | 北京握奇智能科技有限公司 | 一种动态令牌的远程时间同步方法及系统 |
| WO2017134533A1 (en) * | 2016-02-02 | 2017-08-10 | Marvell World Trade Ltd. | Method and apparatus for network synchronization |
| CN111786741B (zh) * | 2020-07-20 | 2023-02-28 | 哈尔滨海能达科技有限公司 | 一种cpri传输数据的时钟同步方法及相关装置 |
| CN117479202A (zh) * | 2022-07-20 | 2024-01-30 | 华为技术有限公司 | 一种通信方法、通信装置和通信系统 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5062124A (en) * | 1988-09-01 | 1991-10-29 | Fujitsu Limited | Network synchronization system |
| WO2000038361A2 (en) * | 1998-12-18 | 2000-06-29 | Telefonaktiebolaget Lm Ericsson (Publ) | Clock synchronization in telecommunications network using system frame number |
| WO2001055803A2 (en) * | 2000-01-27 | 2001-08-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Time synchronization of radio networks |
| EP1519505A2 (de) * | 2003-09-26 | 2005-03-30 | Alcatel | Taktsynchonisierung von Systemen mit mehreren Baugruppen |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4696052A (en) * | 1985-12-31 | 1987-09-22 | Motorola Inc. | Simulcast transmitter apparatus having automatic synchronization capability |
| GB9111313D0 (en) * | 1991-05-24 | 1991-07-17 | British Telecomm | Radio system |
| US5544324A (en) * | 1992-11-02 | 1996-08-06 | National Semiconductor Corporation | Network for transmitting isochronous-source data using a frame structure with variable number of time slots to compensate for timing variance between reference clock and data rate |
| US5638410A (en) * | 1993-10-14 | 1997-06-10 | Alcatel Network Systems, Inc. | Method and system for aligning the phase of high speed clocks in telecommunications systems |
| US6307868B1 (en) * | 1995-08-25 | 2001-10-23 | Terayon Communication Systems, Inc. | Apparatus and method for SCDMA digital data transmission using orthogonal codes and a head end modem with no tracking loops |
| SE509836C2 (sv) * | 1997-06-13 | 1999-03-15 | Ericsson Telefon Ab L M | Förfarande och arrangemang i ett radiokommunikationssystem |
| US6421322B1 (en) * | 1997-11-17 | 2002-07-16 | Adc Telecommunications, Inc. | System and method for electronically identifying connections of a cross-connect system |
| JP4313044B2 (ja) * | 2001-03-15 | 2009-08-12 | クゥアルコム・インコーポレイテッド | 無線位置決定システムにおける時間取得 |
| US6839391B2 (en) * | 2002-01-08 | 2005-01-04 | Motorola, Inc. | Method and apparatus for a redundant clock |
| US20040057543A1 (en) * | 2002-09-24 | 2004-03-25 | Arie Huijgen | Synchronizing radio units in a main-remote radio base station and in a hybrid radio base station |
| DE60313812T3 (de) * | 2003-04-02 | 2019-04-11 | Christopher Julian Travis | Methode zur erzeugung eines oszillator-taktsignales |
| US7571338B2 (en) * | 2004-05-24 | 2009-08-04 | Telefonaktiebolaget Lm Ericsson (Publ) | Determining a time difference between first and second clock domains |
| EP1630979B1 (de) * | 2004-08-25 | 2008-12-24 | Nokia Siemens Networks Gmbh & Co. Kg | Verfahren und System zur Taktuhrenaktualisierung in Komponenten eines Kommunikationsnetzwerks |
| EP1810534B1 (de) * | 2004-10-12 | 2015-06-17 | Telefonaktiebolaget LM Ericsson (publ) | Kommunikation zwischen einem funkgeräte -steuerknoten und mehreren abgesetzten funkgeräte-knoten |
-
2006
- 2006-04-26 DE DE102006019475A patent/DE102006019475B4/de not_active Expired - Fee Related
-
2007
- 2007-03-30 AT AT07727599T patent/ATE517476T1/de active
- 2007-03-30 EP EP07727599A patent/EP2013995B1/de not_active Not-in-force
- 2007-03-30 WO PCT/EP2007/053127 patent/WO2007124995A1/de not_active Ceased
- 2007-03-30 US US12/226,724 patent/US8244304B2/en not_active Expired - Fee Related
- 2007-03-30 RU RU2008146506/08A patent/RU2438247C2/ru not_active IP Right Cessation
- 2007-03-30 CN CN201410831822.4A patent/CN104469929A/zh active Pending
- 2007-03-30 CN CN200780014977.7A patent/CN101485126A/zh active Pending
-
2008
- 2008-10-17 ZA ZA200808899A patent/ZA200808899B/xx unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5062124A (en) * | 1988-09-01 | 1991-10-29 | Fujitsu Limited | Network synchronization system |
| WO2000038361A2 (en) * | 1998-12-18 | 2000-06-29 | Telefonaktiebolaget Lm Ericsson (Publ) | Clock synchronization in telecommunications network using system frame number |
| WO2001055803A2 (en) * | 2000-01-27 | 2001-08-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Time synchronization of radio networks |
| EP1519505A2 (de) * | 2003-09-26 | 2005-03-30 | Alcatel | Taktsynchonisierung von Systemen mit mehreren Baugruppen |
Non-Patent Citations (1)
| Title |
|---|
| "CPRI Specification V2.0 (2004-10-01)", INTERNET CITATION, 1 October 2004 (2004-10-01), XP002359217, Retrieved from the Internet <URL:http://www.cpri.online/> [retrieved on 20051215] * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009109088A1 (zh) * | 2008-03-03 | 2009-09-11 | 中兴通讯股份有限公司 | 时钟同步系统 |
| CN101527959B (zh) * | 2008-03-03 | 2012-09-05 | 中兴通讯股份有限公司 | 时钟同步系统 |
| RU2489801C2 (ru) * | 2008-03-03 | 2013-08-10 | Зет-Ти-И Корпорейшн | Система синхронизирующих тактовых импульсов |
| US8654796B2 (en) | 2008-03-03 | 2014-02-18 | Zte Corporation | System for synchronizing clock |
| CN101982008A (zh) * | 2008-03-31 | 2011-02-23 | 爱立信电话股份有限公司 | 基于无线电设备(re)的同步 |
| JP2011521503A (ja) * | 2008-03-31 | 2011-07-21 | テレフオンアクチーボラゲット エル エム エリクソン(パブル) | 無線機器(re)に基づく同期 |
| CN101588588B (zh) * | 2008-05-20 | 2012-08-08 | 富士通株式会社 | 无线基站系统、控制设备以及无线设备 |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2008146506A (ru) | 2010-06-10 |
| US20090238154A1 (en) | 2009-09-24 |
| EP2013995A1 (de) | 2009-01-14 |
| DE102006019475B4 (de) | 2008-08-28 |
| CN104469929A (zh) | 2015-03-25 |
| CN101485126A (zh) | 2009-07-15 |
| US8244304B2 (en) | 2012-08-14 |
| ZA200808899B (en) | 2009-11-25 |
| RU2438247C2 (ru) | 2011-12-27 |
| EP2013995B1 (de) | 2011-07-20 |
| ATE517476T1 (de) | 2011-08-15 |
| DE102006019475A1 (de) | 2007-10-31 |
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