WO2006066449A1 - Procede de sauvegarde n+m de module de traitement de bande de base sur la base d'une commutation et dispositif associe - Google Patents
Procede de sauvegarde n+m de module de traitement de bande de base sur la base d'une commutation et dispositif associe Download PDFInfo
- Publication number
- WO2006066449A1 WO2006066449A1 PCT/CN2004/001485 CN2004001485W WO2006066449A1 WO 2006066449 A1 WO2006066449 A1 WO 2006066449A1 CN 2004001485 W CN2004001485 W CN 2004001485W WO 2006066449 A1 WO2006066449 A1 WO 2006066449A1
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- WO
- WIPO (PCT)
- Prior art keywords
- baseband processing
- processing module
- switching
- unit
- module
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
Definitions
- the present invention relates to a mobile communication system, and more particularly to a baseband processing module N+M backup method and apparatus in a base station subsystem. Background technique
- a mobile communication system is a communication system capable of establishing a plurality of information transmissions between mobile bodies, between mobile bodies and fixed-point users, and between fixed-point users and mobiles.
- the network side device of the mobile communication system mainly comprises a base station, a base station controller, and a core network device.
- the base station mainly comprises a transmission unit, a common control unit, a clock unit, a radio frequency transceiver unit, and a baseband processing unit. There is no strict standard for the interface between the RF transceiver unit and the baseband processing unit, basically using an internal interface.
- the uplink direction refers to the signal flow direction sent by the mobile phone and the base station
- the downlink direction refers to the signal flow direction sent by the base station and the mobile phone.
- the RF transceiver unit converts the received RF signal to a baseband processing unit after down-converting and analog-to-digital conversion, and performs demodulation, deinterleaving, and channel decoding operations in the baseband processing unit.
- the baseband processing unit channel codes, interleaves, and modulates, the digital signal is output to the RF transceiver unit for digital-to-analog conversion and up-conversion processing.
- the RF transceiver unit and the baseband processing unit have digital signal interfaces in both the uplink and downlink directions.
- the radio frequency transceiver unit and the baseband processing unit of the base station usually consist of a plurality of modules, and it is usually required that the baseband processing of one or more radio frequency transceiver modules be performed by a plurality of baseband processing modules.
- each baseband processing module performs a number of baseband processing of the carrier frequency so that in the upstream direction, one or more RF transceiver module (TRX) outputs are sent to multiple baseband processing modules (BBPs).
- BBPs baseband processing modules
- the signal output by each baseband processing module (BBP) needs to be sent to the corresponding radio transceiver module (TRX).
- each baseband processing module (BBP) 111 and each radio frequency transceiver module 121 are connected by a mesh.
- the characteristics of this approach are: 1. In the upstream direction, the digital signal output by each RF transceiver module (TRX) 121 needs to be sent to all baseband processing modules (BBP) 111. 2. In the downstream direction, the digital signals output by each baseband processing module 111 need to be sent to all of the radio transceiver modules 121. 3.
- Each BBP 111 or TRX 121 is selected according to the configuration. The signal to be processed.
- the technical problem to be solved by the present invention is to propose a switching baseband processing module N+M backup method and device, which solves the technical problem that the existing method has complicated wiring and interfaces and high cost when there are many modules.
- the present invention provides an exchange-based baseband processing module N+M backup method, which is characterized in that an exchange unit is added between a radio frequency transceiver unit and a baseband processing unit, and an IQ signal is completed by the switching unit. Forwarding between the baseband processing module of the baseband processing unit and the radio frequency transceiver module of the radio frequency transceiver unit, and by reconfiguring the switching unit, modifying the path of receiving and transmitting the IQ signal, and switching the function of the failed baseband processing module to The backup baseband processing module implements N+M backup of the baseband processing module.
- the above-mentioned switching-based baseband processing module N+M backup method is characterized in that, in the downlink direction, the switching unit exchanges the IQ signal output by the baseband processing module to the designated radio frequency transceiver module, and in the uplink direction, the switching unit transmits the radio frequency transceiver module.
- the output IQ signal is exchanged to the designated baseband processing module.
- the above-mentioned switching-based baseband processing module N+M backup method is characterized in that, when the baseband processing module fails, the switching unit is reconfigured, and the output from the radio frequency transceiver module processed by the faulty baseband processing module is switched to the backup baseband. Processing the mold ⁇ pills simultaneously exchanges the output of the backed up baseband processing module to the RF transceiver module.
- the above-mentioned switching-based baseband processing module N+M backup method is characterized in that: the switching unit includes two switching modules, and each switching module can separately perform IQ signal forwarding and path switching, wherein one switching module is mainly The other switch module is used as a backup, and the switch between the two switch modules can be switched between the master and the backup.
- the above-mentioned switching-based baseband processing module N+M backup method is characterized in that a radio frequency transceiver unit, a baseband processing unit and a switching unit are grouped as a group, and different groups are bidirectionally connected through a switching module of the switching unit. By reconfiguring the switch module, it is possible to switch the function of the failed baseband processing module in one group to the backup baseband processing module in the other group.
- the present invention further provides an exchange-based baseband processing module N+M backup device, which is characterized in that it comprises: a radio frequency transceiver unit, a baseband processing unit and a switching unit;
- the data interface is connected to all the baseband processing modules in the baseband processing unit and all the radio frequency transceiver modules in the radio frequency transceiver unit;
- the IQ signal is completed by the switching unit in the baseband processing module of the baseband processing unit and the radio frequency transceiver module of the radio frequency transceiver unit Forwarding; by reconfiguring the switching unit, modifying the path of receiving and transmitting the IQ signal, switching the function of the failed baseband processing module to the backup baseband processing module, and implementing the N+M backup of the baseband processing module.
- the above-mentioned switching-based baseband processing module N+M backup device is characterized in that the switching unit comprises two switching modules, each of which is connected to all baseband processing modules and radio frequency in the baseband processing unit through a bidirectional data interface. All the radio frequency transceiver modules in the transceiver unit form a two-star signal transmission network, and each switching module can separately perform IQ signal forwarding and path switching, wherein one switching module is used as a backup for another switching module. And the master switch can be switched between the two switch modules.
- the above-mentioned switching-based baseband processing module N+M backup device is characterized in that one RF transceiver unit, one baseband processing unit and one switching unit are grouped together, and different groups of switching units are bidirectional through a bidirectional data interface.
- the connection by reconfiguring the switch module, enables switching the functionality of the failed baseband processing module in one group to the backup baseband processing module in the other group.
- the invention has the following advantages:
- Figure 1 is a schematic view of a prior art implementation method
- 2 is a schematic view of a method for implementing the technology of the present invention
- FIG. 3 is a schematic diagram of a method 1 for implementing the technology of the present invention.
- Figure 4 is a schematic diagram of a method 2 of implementing the technology of the present invention.
- Figure 5 is a schematic diagram of a time slot on an IQ link
- FIG. 6 is a schematic diagram of an IQ time slot exchange of the present invention.
- FIG. 7 is a schematic diagram of line switching. The best way to implement the invention
- FIG. 1 is a schematic illustration of a prior art implementation. There is a bidirectional data interface between the baseband processing module and all RF transceiver modules. The connection between the baseband processing module and the RF transceiver module is complicated. When the number of baseband processing modules or RF transceiver modules is large, it becomes difficult to implement.
- the technical solution of the present invention is realized by adding an exchange unit 230 between the radio frequency transceiver unit 210 and the baseband processing unit 220.
- the switching unit 230 has a bidirectional data interface with all of the baseband processing modules 211 and a bidirectional data interface with all of the radio frequency transceiver modules 221.
- the baseband processing module (BBP) 211 mainly performs processing of one or more carrier IQ signals;
- the radio transceiver module (TRX) 221 performs conversion between the plurality of carrier IQ signals and the radio frequency signals; and the switching unit 230 mainly performs the exchange of the IQ signals.
- An IQ link can be divided into multiple IQ time slots as needed, each time slot being composed of IQ data on multiple antennas of one or more carriers.
- 5 is an illustration of an IQ link having three time slots. Each time slot is composed of one carrier and four antenna IQ data.
- data 501 numbered C2A2I represents: I data of carrier 2 antenna 2 (C)
- the representative carrier, A represents the antenna
- the data 502 numbered C2A2Q represents: Q data of the carrier 2 antenna 2.
- the basic unit of switching unit switching is the IQ time slot, and the switching unit can switch any IQ time slot on any input link to any IQ time slot on any of the input links, depending on the configuration.
- FIG. 6 is a schematic illustration of the IQ time slot exchange of the present invention.
- each link has three IQ time slots, IQ time slot 0 of input link 0 is switched to IQ time slot 2 of output link 0, and input link 0 IQ slot 1 is switched to IQ slot 0 of output link 1, IQ slot 2 of input link 0 is switched to IQ slot 2 of output link 2, and so on.
- Line switching can only be exchanged between IQ links, which is a special case of IQ time slot exchange, which is equivalent to one
- the IQ link has only one IQ time slot, and the line switching is shown in Figure 7.
- IQ time slot switching it offers greater flexibility than line switching.
- one RF transceiver module can implement 6-carrier 4 antennas
- one baseband processing module can implement 3-carrier 8-antenna processing, so that in an 8-antenna system, if The data of the 3 carrier 4 antennas constitutes an IQ time slot, and the N+M backup of the baseband processing module can be conveniently realized by the switching unit.
- Fig. 3 is a schematic view showing a method 1 of the present invention.
- the switching unit consists of two switching modules 231 (XI) and 232 (X2), which form a two-star (double-star network) signal transmission network.
- the switching modules XI and X2 are the centers of two star networks, XI and X2.
- Mutual backup here assumes that XI works in the active state.
- the IQ signal output by the baseband processing module is sent to the XI, and the XI exchanges the IQ signal output by the baseband processing module to the designated RF transceiver module according to the configuration.
- the IQ signal output from the RF transceiver module is sent to the XI.
- the XI exchanges the IQ signal output from the RF transceiver module to the designated baseband processing module.
- the X2 board and the XI board function as the same, and the XI board is backed up.
- the baseband processing module completes the above work through X2, and all the work done by XI is transferred to X2.
- the baseband processing module BBPn When any of the baseband processing modules ⁇ 1, ⁇ 2 ⁇ . ⁇ _1 fails, the baseband processing module BBPn will replace the faulty board. At this time, only the system sends a command to change the configuration of the XI, so that the backup of the baseband processing module can be realized. . For example, suppose the IQ data output by BBP2 is exchanged to the radio transceiver module TRX3 via XI, and the IQ data processed by BBP2 in the uplink direction is from the radio transceiver module TRX3. When the baseband processing module BBP2 fails, only the baseband processing module BBPn is used instead of the original baseband processing.
- the switching of the processing module BBP2 to the RF transceiver module TRX3 is changed to the exchange of the baseband processing module BBPn to the RF transceiver module TRX3. All the work on the original BBP2 board is completed by the baseband processing module BBPn, thus completing the backup of the baseband processing module.
- Fig. 4 is a schematic view showing a second embodiment of the present technology.
- the baseband processing module, the radio frequency transceiver module, and the switch module are divided into two groups.
- the switching unit consists of XI, X2 and X3, X4.
- XI and X2 are backups of each other to form a switch module;
- X3 and X4 are backups of each other to form another switch module. It is assumed here that XI and X3 work in the main state.
- the baseband processing module BBPn When any one of the baseband processing module ⁇ 1, ⁇ 2 ⁇ . ⁇ -1 fails, the baseband processing module BBPn will replace the faulty board. At this time, only the system sends a command to change the configuration of XI and X3, and the baseband processing module can be realized. Backup. For example, suppose the IQ data output by BBP2 is exchanged to the RF transceiver module TRX3 via XI, and the IQ data processed by the BBP2 in the upstream direction is from the RF transceiver module TRX3. When the baseband processing module BBP2 fails, only the baseband processing module BBPn is used instead of the original baseband processing.
- the baseband processing module radio frequency transceiver module can be divided into more groups, and one switch module is added to each group.
- the M-block baseband processing module can be used to effectively complete the N+M backup of all baseband processing modules.
- the present invention discloses a method and apparatus for efficiently implementing N+M backup of a baseband processing module by adding a switching unit in a mobile communication system, and reducing the cost of the system and improving the reliability of the system. .
- the invention solves the technical problems that the connection and the interface are complicated and the cost is relatively high when there are many BBP and TRX modules.
- the switching unit By adding the switching unit, the N+M backup of the baseband processing module can be effectively realized, and the interface part in the BBP and TRX modules is simple.
- the BBP and the TRX are to be in two or more sub-boxes, between the sub-boxes
- the number of cables is low, the reliability is high, and the cost of the system can be reduced, and the reliability of the system can be improved.
- the invention can be applied to the base station subsystem of the mobile communication system, and can also be applied to any field where similar technical problems exist, and can be widely applied in industrial automation, monitoring, communication and the like.
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
- Mobile Radio Communication Systems (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04802498A EP1833270B1 (en) | 2004-12-21 | 2004-12-21 | A base band processing module n+m backup method based on switching and device thereof |
PCT/CN2004/001485 WO2006066449A1 (fr) | 2004-12-21 | 2004-12-21 | Procede de sauvegarde n+m de module de traitement de bande de base sur la base d'une commutation et dispositif associe |
US11/722,377 US7948948B2 (en) | 2004-12-21 | 2004-12-21 | Base band processing module N+M backup method based on switching and device thereof |
CNA2004800440805A CN101027927A (zh) | 2004-12-21 | 2004-12-21 | 一种基于交换的基带处理模块n+m备份方法和装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2004/001485 WO2006066449A1 (fr) | 2004-12-21 | 2004-12-21 | Procede de sauvegarde n+m de module de traitement de bande de base sur la base d'une commutation et dispositif associe |
Publications (1)
Publication Number | Publication Date |
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WO2006066449A1 true WO2006066449A1 (fr) | 2006-06-29 |
Family
ID=36601342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2004/001485 WO2006066449A1 (fr) | 2004-12-21 | 2004-12-21 | Procede de sauvegarde n+m de module de traitement de bande de base sur la base d'une commutation et dispositif associe |
Country Status (4)
Country | Link |
---|---|
US (1) | US7948948B2 (zh) |
EP (1) | EP1833270B1 (zh) |
CN (1) | CN101027927A (zh) |
WO (1) | WO2006066449A1 (zh) |
Cited By (4)
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CN101777947A (zh) * | 2010-01-19 | 2010-07-14 | 中兴通讯股份有限公司 | 一种基带单元的iq通道分配的方法和装置 |
WO2010145448A1 (zh) * | 2009-10-20 | 2010-12-23 | 中兴通讯股份有限公司 | 一种基带池设备及其实现基带数据交换的方法 |
WO2012155745A1 (zh) * | 2011-07-12 | 2012-11-22 | 中兴通讯股份有限公司 | 一种iq通道分配方法与装置 |
CN103379527A (zh) * | 2012-04-26 | 2013-10-30 | 上海贝尔股份有限公司 | 基于共享基带池的系统和方法 |
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CN100426897C (zh) * | 2005-01-12 | 2008-10-15 | 华为技术有限公司 | 分体式基站系统及其组网方法和基带单元 |
CN101217786B (zh) * | 2008-01-02 | 2012-04-25 | 华为技术有限公司 | 一种基带资源共享方法、通信系统及设备 |
CN101426303B (zh) | 2008-10-27 | 2012-03-21 | 华为技术有限公司 | 通信系统、设备和方法 |
WO2010081300A1 (zh) * | 2009-01-19 | 2010-07-22 | 华为终端有限公司 | 数据接发处理设备、数据接发处理设备底座及系统 |
CN101835165A (zh) * | 2010-04-30 | 2010-09-15 | 上海华为技术有限公司 | 基于硬件故障的小区重建立方法及系统 |
CN102137417B (zh) * | 2011-02-18 | 2014-02-26 | 华为技术有限公司 | 载频互助方法、基站及无线通信系统 |
EP3586561B1 (en) * | 2017-02-21 | 2020-12-09 | Telefonaktiebolaget LM Ericsson (publ) | Method and devices for dual connectivity between a dual protocol stack user equipment and two baseband units of a radio access telecommunications network |
EP3847849A4 (en) | 2018-09-03 | 2022-06-01 | Celeno Communications (Israel) Ltd. | DYNAMICALLY CONFIGURABLE WIRELESS DEVICE SUPPORTING MULTIPLE SIMULTANEOUS FREQUENCY BANDS |
CN116938279B (zh) * | 2023-09-13 | 2023-12-22 | 北京航天晨信科技有限责任公司 | 一种多通道软件无线电通信控制系统 |
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WO2010145448A1 (zh) * | 2009-10-20 | 2010-12-23 | 中兴通讯股份有限公司 | 一种基带池设备及其实现基带数据交换的方法 |
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CN101777947A (zh) * | 2010-01-19 | 2010-07-14 | 中兴通讯股份有限公司 | 一种基带单元的iq通道分配的方法和装置 |
CN101777947B (zh) * | 2010-01-19 | 2014-01-01 | 中兴通讯股份有限公司 | 一种基带单元的iq通道分配的方法和装置 |
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CN102882580B (zh) * | 2011-07-12 | 2018-01-30 | 中兴通讯股份有限公司 | 一种iq通道分配方法与装置 |
CN103379527A (zh) * | 2012-04-26 | 2013-10-30 | 上海贝尔股份有限公司 | 基于共享基带池的系统和方法 |
Also Published As
Publication number | Publication date |
---|---|
CN101027927A (zh) | 2007-08-29 |
US7948948B2 (en) | 2011-05-24 |
EP1833270B1 (en) | 2013-03-27 |
EP1833270A1 (en) | 2007-09-12 |
US20100016021A1 (en) | 2010-01-21 |
EP1833270A4 (en) | 2009-06-03 |
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