WO2008058471A1 - Station de base, procédé de traitement d'un signal de bande de base d'une station de base et système de communication sans fil - Google Patents

Station de base, procédé de traitement d'un signal de bande de base d'une station de base et système de communication sans fil Download PDF

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Publication number
WO2008058471A1
WO2008058471A1 PCT/CN2007/003229 CN2007003229W WO2008058471A1 WO 2008058471 A1 WO2008058471 A1 WO 2008058471A1 CN 2007003229 W CN2007003229 W CN 2007003229W WO 2008058471 A1 WO2008058471 A1 WO 2008058471A1
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WO
WIPO (PCT)
Prior art keywords
base station
baseband
baseband unit
common module
unit
Prior art date
Application number
PCT/CN2007/003229
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English (en)
Chinese (zh)
Inventor
Peng Lan
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008058471A1 publication Critical patent/WO2008058471A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • Baseband baseband signal processing method and wireless communication system in base station
  • the present invention relates to the field of wireless communications, and in particular to a base station and a baseband processing technique therein. Background technique
  • the first is based on the original system, and a new base station is added, thereby forming a superimposed communication network, which can provide different mobile services for users.
  • the problem with this solution is that in order to build such an overlay network, the investment is huge, used to purchase equipment, obtain site, construction site, and network operation and maintenance, including CAPEX (investment cost) and OPEX (operating cost). In terms of investment, the investment is quite huge.
  • the second is to detach the old-style modules and install the new-style modules into the old-style modules, thereby sharing a machine rejection and implementing a multi-mode base station.
  • the main advantage of the second option over the first solution is that it saves site and machine rejection.
  • the common problem of the two schemes is that the resources are relatively wasteful. The reason is that there is no unified design between the new and old modules, and resources cannot be shared, especially the master control and transmission in the baseband unit.
  • An embodiment of the present invention provides a base station, which includes at least two baseband units for baseband processing, and a common module for providing at least one of a master, a transmission, and a clock for the baseband unit; Each baseband unit is connected in a direct or indirect manner; each baseband unit uses at least one of a master, a transmission, and a clock provided by a common module.
  • An embodiment of the present invention further provides a baseband signal processing method in a base station, including the following steps: The baseband unit obtains one of a master, a transmission, and a clock directly or indirectly from a shared common module; the baseband unit uses at least the obtained One of the master, transmit, and clock processes the baseband signal.
  • Embodiments of the present invention also provide a wireless communication system including at least one multi-standard base station as described above.
  • the main difference between the embodiment of the present invention and the prior art is that at least one of the main control, transmission, and clock functions is uniformly provided by the shared common module to each baseband unit in the base station, and each of the prior art
  • the baseband units each use their own master, transmission, and clock.
  • a plurality of baseband units can share a set of components to provide mastering, transmission, and clocking, which is low in cost.
  • the newly added baseband unit no longer needs independent master, transmission, and clock components, which reduces the expansion cost and saves resources.
  • FIG. 1 is a schematic structural diagram of a base station device according to a first embodiment of the present invention
  • FIG. 2 is a schematic diagram of a schematic diagram of an interconnection interface in a base station device according to a first embodiment of the present invention
  • FIG. 3 is a schematic diagram of a baseband unit and a baseband unit chain-type interconnection including a common module in a base station device according to the first embodiment of the present invention
  • FIG. 4 is a schematic diagram of a star-type interconnection of a baseband unit and a baseband unit including a common module in a base station device according to a first embodiment of the present invention
  • 5 is a schematic diagram of a bus-type interconnection of a baseband unit and a baseband unit including a common module in a base station device according to a first embodiment of the present invention
  • 6 is a schematic diagram of a ring-type interconnection of a baseband unit and a baseband unit including a common module in a base station device according to a first embodiment of the present invention
  • FIG. 7 is a schematic diagram of a switched-type interconnection of a baseband unit and a baseband unit including a common module in a base station device according to a first embodiment of the present invention
  • FIG. 8 is a schematic diagram of a shared channel of an interconnection interface on a baseband radio frequency interface in a base station device according to the first embodiment of the present invention
  • FIG. 9 is a schematic diagram of connection of each baseband unit in a base station device to a radio frequency unit according to the first embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a baseband unit in a base station device connected in series to a radio frequency unit according to a first embodiment of the present invention
  • FIG. 11 is a schematic diagram of an implementation scheme of a multimode base station in a base station device according to a first embodiment of the present invention
  • FIG. 12 is a flowchart of a method for processing a baseband signal in a base station according to a second embodiment of the present invention. detailed description
  • a common module for providing at least one of a master control, a transmission, and a clock to the baseband unit is included. Connected to each baseband unit in a direct or indirect manner, each baseband unit using at least one of the master, transmission, and clock provided by the common module.
  • the baseband units of different systems can share a set of components to provide master control, transmission and clock. When the base station is expanded, the newly added baseband unit no longer needs independent master, transmission, and clock components, which reduces the expansion cost.
  • the present embodiment relates to a base station device.
  • the base station in this embodiment includes a baseband unit of multiple standards, and a common module, and the common module is included as a module in the base station.
  • a baseband unit In a baseband unit.
  • the base station includes a radio frequency unit (RFU) for radio frequency signal processing, Baseband units (BBUs) of various formats, and baseband units including common modules, each baseband unit including an interconnection interface for directly or indirectly connecting with other baseband units or baseband units including common modules.
  • the radio frequency unit is used for processing the radio frequency signal;
  • the common module is used to provide the main control, transmission, and clock resources for the baseband unit;
  • the baseband unit is used for baseband processing, and the main control provided by the common module is shared by the transmission of the interconnection interface, Transmit, clock resources, to avoid each baseband unit use its own master, transmission and clock, thus reducing costs.
  • the common module provides a reference clock whose frequency is a multiple or a submultiple of the required frequency of each baseband unit, and each baseband unit obtains its own required clock by frequency multiplication or frequency division, thereby realizing sharing of clock resources. It solves the problem that the clocks used by different baseband units may be different.
  • the interface used for extending the interconnection of each baseband unit may be an Eia interface, and the specific structure is shown in FIG. 2.
  • the baseband unit has a Global System for Mobile communication (“GSM”) standard, Code Division Multiple Access (“CDMA”) standard, and 4 ⁇ wave access to the global system.
  • GSM Global System for Mobile communication
  • CDMA Code Division Multiple Access
  • WiMAX Worldwide Interoperability for Microwave Access
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • baseband units of other standards such as baseband units of the Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, baseband units of the CDMA2000 system, and personal handyphone systems ( The baseband unit of the Personal Handyphone System (“PHS”) system, the baseband unit of the trunk system, or the baseband unit of the Air Interface Evolution (AIE) system, etc.
  • PHS Personal Handyphone System
  • AIE Air Interface Evolution
  • each baseband unit still uses its own baseband processing logic.
  • the cost of the base station can also share power distribution, backup power, and monitoring resources to further reduce the multi-standard base;
  • the baseband unit of each system and the baseband unit including the common module may be connected by at least one of the following ways:
  • the baseband unit with the common module and each baseband unit can be interconnected by various methods such as chain type, star type, bus type, ring type, and switching type, which increases the flexibility when actually configuring the base station.
  • Each baseband unit also includes a baseband radio interface for direct or indirect connection to the radio unit, transmitting operational maintenance information (0&M information) and baseband IQ data. That is to say, the interconnection interface of the baseband unit is used for transmitting the main control information, the transmission information and the clock synchronization information, so as to share the main control, transmission and clock resources between the multi-standard baseband units; the baseband radio frequency interface of the baseband unit, The transmission of the O&M information and the baseband IQ data is as shown in FIG.
  • Each baseband unit can be connected to the radio frequency unit through the baseband radio frequency interface (as shown in FIG. 9), respectively, to reduce the possibility of simultaneous failure of multiple baseband units due to connection failure; each baseband unit can also be connected in series and then connected to the radio unit. (also in series), as shown in Figure 10, the same baseband RF channel can be shared between the baseband units to reduce cost, especially for the radio unit at the far end.
  • FIG 11 is a schematic diagram of a multi-standard base station that may be used in practical applications.
  • One case is to add a new baseband unit and a common module (2G BBU, 3G BBU, and include) to the existing base station.
  • BBU of the common module, and the relevant radio unit is added to the base station (3G) MRRU) is used to process radio frequency signals;
  • another case is that RF units associated with newly added baseband units and common modules (2G BBUs, 3G BBUs, and BBUs containing common modules) cannot be added to existing base stations (3G) MRRU), therefore, it is necessary to implement a multi-standard base station by configuring a remote radio unit (RRU).
  • RRU remote radio unit
  • the baseband unit of the new system can also be extended through the interconnection interface of the baseband unit.
  • These BBUs of different capacities and different systems can be installed in a cabinet or rack, connected through interconnect interfaces, and can choose to share the power distribution, backup, and monitoring resources of the main control, transmission, clock, and site.
  • a multi-standard universal interface is implemented between the baseband unit and the radio frequency unit.
  • the baseband units of each system support the direct connection with the radio frequency unit, and can also be connected to the radio frequency unit through the baseband unit of other standards.
  • the base station equipment can be optimized for the mainstream requirements of the operator, instead of the initial configuration, a lot of expansion slots are reserved. Bit.
  • the operator can configure a small-capacity baseband unit as needed. When a large-capacity configuration is required in the future, the new baseband unit is extended through the interconnection interface between the BBUs.
  • the baseband unit can be concealed by miniaturization and decentralized mounting of the baseband unit, and there is no problem of bearing. Therefore, as long as the original mobile phone operator already has a base station site, the baseband unit can be directly installed by using the remaining space in the outdoor macro base station, the machine rejection of the indoor macro base station room, or the remaining space of the rack, without requiring an additional The location of the base station solves the problem that the base station address selection of the mobile phone carrier is difficult. At the same time, due to the miniaturization and decentralized installation of equipment, mobile phone operators can greatly shorten the time for network construction and achieve rapid network construction.
  • each baseband unit can share a common module, and provides a unified control and transmission interface function, which simplifies the management and maintenance of the multi-standard base station, and satisfies the operator's requirements for maintainability of the base station.
  • the second embodiment of the present invention relates to a base station device, and the present embodiment is substantially the same as the first embodiment, except that in the first embodiment, the common module is included in one baseband unit in the base station, and in the present embodiment In the mode, the common module is an independent physical unit. That is, in the first embodiment, in order to reduce the requirement for the independent space in the chassis, the common module may be included in one baseband unit in the base station, and in the present embodiment, the common module is set to be independent.
  • the physical unit can replace the common module separately when the common module fails, which reduces the maintenance cost, and the functions of each baseband unit are relatively uniform, which is convenient for mass production.
  • a third embodiment of the present invention relates to a baseband signal processing method in a base station, and a specific process is shown in FIG.
  • each of the baseband units in the base station obtains the master, transmission, and clock resources directly or indirectly from the shared common module.
  • the base station includes a baseband unit of the GSM standard, a baseband unit of the CDMA system, a baseband unit of the WiMAX system, and a baseband unit of the LTE system, and the baseband units of these systems obtain the master control, transmission, and clock resources from the common module.
  • the baseband unit in this embodiment may be other systems, such as a WCDMA system, a TD-SCDMA system, a CDMA2000 system, a PHS system, a cluster system, or an AIE system. The present embodiment is not specifically limited.
  • the baseband units of each system process the baseband signals using the obtained master, transmission, and clock.
  • the frequency of the reference clock provided by the common module is a multiple or a multiple of the required frequency of each baseband unit.
  • the baseband units of each system multiply or divide the clock provided by the common module to obtain the clock required by itself. And use this clock resource to process the baseband signal.
  • a plurality of baseband units of different standards can share a set of components to provide master control, transmission, and clock, thereby reducing costs, and when the base station is expanded, the newly added baseband unit is no longer needed.
  • Independent mastering, transmission, and clocking components further reduce expansion costs.
  • each baseband unit uses its own master, transmission, and clock.
  • a plurality of baseband units can share a set of components to provide mastering, transmission, and clocking, reducing costs.
  • the newly added baseband unit no longer needs independent master, transmission, and clock components, which reduces the expansion cost.
  • the embodiments of the present invention can be applied to the case where the baseband unit in the same base station is in different standards, such as WCDMA, GSM, LTE are mixed in one base station.
  • the most important difference between baseband units of different standards is that the baseband processing is different.
  • Each baseband unit still uses its own baseband processing logic, but shares the master, transmission, and clock. Therefore, the baseband units of different standards are formed to form a multi-standard base station, which reduces the cost of the multi-standard base station.
  • the frequency of the reference clock provided by the common module is a multiple or a submultiple of the required frequency of each baseband unit, and each baseband unit obtains its own required clock by frequency multiplication or frequency division, thereby solving the use of the baseband unit of different standards.
  • the clock may be different.
  • Each baseband processing unit in the same base station can share power distribution, backup power, and monitoring resources, thereby further reducing the cost of the multi-standard base station.
  • the common module can be a separate physical unit. When the common module fails, the public module can be replaced separately, which reduces maintenance costs.
  • Each baseband unit has a uniform function and is convenient for mass production.
  • the common module can also be part of a baseband unit in the base station, thereby reducing the need for a separate space in the chassis.
  • the common module and each baseband unit can be interconnected by various methods such as chain type, star type, bus type, ring type, and switching type, thereby increasing flexibility in actually configuring the base station.
  • Each of the baseband units can be separately connected to the radio frequency unit, thereby reducing the possibility of simultaneous failure of the plurality of baseband units due to connection failure.
  • the baseband units can also be connected in series and then connected to the radio frequency unit, so that the baseband units can share the same radio frequency line, and the P strips are low-cost, and are particularly suitable for the radio unit at the far end.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne le domaine de la communication sans fil et, plus spécifiquement, une station de base, un procédé de traitement d'un signal de bande de base de la station de base et un système de communication sans fil. Un module commun partagé fournit les principales fonctions de commande, de transmission et d'horloge, etc., à chaque unité de bande de base de la station de base. Le partage permet de réduire le coût d'établissement de la station et les coûts de réparation et d'exploration d'anaphase. Les unités de bande de base d'une station de base peuvent être des mécanismes différents. Le module commun peut être une unité physique spéciale et peut faire partie de certaines unités de bande de base de la station de base. Le module commun et chaque unité de bande de base peuvent être connectés à un type de chaîne, un type d'étoile, un type de bus, un type d'anneau, un type d'échange ou d'autres types d'éléments.
PCT/CN2007/003229 2006-11-16 2007-11-15 Station de base, procédé de traitement d'un signal de bande de base d'une station de base et système de communication sans fil WO2008058471A1 (fr)

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CN2006101491237A CN101188818B (zh) 2006-11-16 2006-11-16 基站、基站中基带信号处理方法及无线通信系统

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CN102395227A (zh) * 2008-12-17 2012-03-28 华为技术有限公司 通信信号的多路复用方法、无线通信系统及无线设备控制器
CN102685934A (zh) * 2011-12-22 2012-09-19 华为技术有限公司 无线接入系统及无线业务处理方法
CN102752781A (zh) * 2008-05-23 2012-10-24 华为技术有限公司 无线基站设备、无线设备控制器和无线设备
US8780802B2 (en) 2008-12-17 2014-07-15 Huawei Technologies Co., Ltd. Communication signal multiplexing method, radio communication system, and radio equipment controller
CN111400640A (zh) * 2020-04-10 2020-07-10 中国铁塔股份有限公司 一种站址全息信息管理系统、构建方法及构建装置

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CN102026422B (zh) * 2009-09-10 2017-06-20 上海华为技术有限公司 一种多模基站共享传输线路的方法和多模基站
CN101778497B (zh) * 2009-12-30 2013-01-30 华为技术有限公司 获取软件的方法及通信设备
CN102340470A (zh) * 2010-07-20 2012-02-01 中兴通讯股份有限公司 基带处理系统及方法
CN102170714A (zh) * 2011-03-25 2011-08-31 中兴通讯股份有限公司 一种多制式驱动方法、系统和终端
WO2011144053A2 (fr) * 2011-05-20 2011-11-24 华为技术有限公司 Station de base multimode, et procédé et appareil pour la communication dans une station de base multimode
WO2013051592A1 (fr) * 2011-10-06 2013-04-11 三菱電機株式会社 Dispositif de station de base et système de communication
CN105657831B (zh) * 2014-12-03 2020-01-14 中兴通讯股份有限公司 基带资源管理方法和装置

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CN102752781A (zh) * 2008-05-23 2012-10-24 华为技术有限公司 无线基站设备、无线设备控制器和无线设备
CN102752781B (zh) * 2008-05-23 2016-06-15 华为技术有限公司 无线基站设备、无线设备控制器和无线设备
CN102395227A (zh) * 2008-12-17 2012-03-28 华为技术有限公司 通信信号的多路复用方法、无线通信系统及无线设备控制器
US8780802B2 (en) 2008-12-17 2014-07-15 Huawei Technologies Co., Ltd. Communication signal multiplexing method, radio communication system, and radio equipment controller
CN102395227B (zh) * 2008-12-17 2014-09-17 华为技术有限公司 通信信号的多路复用方法、无线通信系统及无线设备控制器
CN102685934A (zh) * 2011-12-22 2012-09-19 华为技术有限公司 无线接入系统及无线业务处理方法
CN102685934B (zh) * 2011-12-22 2014-06-25 华为技术有限公司 无线接入系统及无线业务处理方法
CN111400640A (zh) * 2020-04-10 2020-07-10 中国铁塔股份有限公司 一种站址全息信息管理系统、构建方法及构建装置
CN111400640B (zh) * 2020-04-10 2023-09-22 中国铁塔股份有限公司 一种站址全息信息管理系统、构建方法及构建装置

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