CN102752781B - Wireless base station device, radio equipment controller and wireless device - Google Patents
Wireless base station device, radio equipment controller and wireless device Download PDFInfo
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- CN102752781B CN102752781B CN201210207858.6A CN201210207858A CN102752781B CN 102752781 B CN102752781 B CN 102752781B CN 201210207858 A CN201210207858 A CN 201210207858A CN 102752781 B CN102752781 B CN 102752781B
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Abstract
Disclosure one wireless communication system, including: Wireless Telecom Equipment, this Wireless Telecom Equipment includes the wireless device RE supporting at least two communication standard and the radio equipment controller REC supporting this at least two communication standard; RE includes at least two REC-RE interface; The data of this at least two REC-RE interface transmission different communication standard, and REC-RE number of ports is corresponding with the communication standard number supported; REC includes at least two REC-RE interface and corresponding with at least two REC-RE interface of RE; The REC-RE interface of at least two REC-RE interface same communication standard corresponding to REC of RE is connected with each other by cable. In embodiment of the present invention, REC-RE interface is relatively independent, can remove from and realize the process that clock synchronizes in a communications system, reach convenient, to realize multi-mode solution at low cost effect.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to wireless communication system, radio equipment controller and wireless device.
Background technology
Along with developing rapidly of radio network technique, for protecting the investment of operator, reducing the risk that turn of the market brings, industry proposes the concept of Multi-Mode Base Station. The one of Multi-Mode Base Station concept is expressed as: support the base station that two or more communication standard is applied in a rack simultaneously.
The advantage of Multi-Mode Base Station mainly has:
(1) base station equipment can be reused, including reusing hardware platform and software architecture;
(2) equipment can be reduced repeat to install, reduce space, site;
Such as, GSM/UMTS dual-mode base station concept is to occur along with the ripe gradually of IMT-2000 technology in later 1990s. But, owing to the life cycle of GSM is longer than expection, software radio (SoftwareDefinedRadio, SDR) technological break-through is made slow progress, based on the Multi-Mode Base Station of SDR technology far from the demand meeting operator.
Market is still very urgent to the demand of Multi-Mode Base Station solution.
Summary of the invention
Embodiment of the present invention to solve the technical problem that and to be to provide a kind of wireless communication system, radio equipment controller and wireless device.
For solving above-mentioned technical problem, one embodiment of the present invention provides a kind of wireless base station device, including supporting the wireless device RE of at least two communication standard and supporting the radio equipment controller REC of described at least two communication standard; Described RE includes at least two REC-RE interface; The data of described at least two REC-RE interface transmission different communication standard, and described at least two REC-RE number of ports is corresponding with the communication standard number that described RE supports; Described REC includes at least two REC-RE interface and corresponding with at least two REC-RE interface of described RE; The REC-RE interface of at least two REC-RE interface same communication standard corresponding to described REC of described RE is connected with each other by cable.
Describe from above example and can be seen that, in embodiment of the present invention, the REC-RE interface of at least two REC-RE interface of RE same communication standard corresponding to REC is connected with each other by cable, REC-RE interface is relatively independent, such that it is able to the process that clock synchronizes need not be realized in a communications system, reach convenient, to realize bimodulus, multi-mode solution at low cost effect.
Further, the embodiment of the present invention on the basis of single system base station, by increasing the standard function veneer in REC, can be changed the software of RE simultaneously, can realize Multi-Mode Base Station solution, it is achieved scheme is convenient smaller, and cost is low. Meanwhile, the business data flow of multiple types is relatively independent, and a kind of standard traffic failure is without influence on the business of another kind of standard, and system reliability is higher.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of an embodiment of wireless communication system of the present invention;
Fig. 2 is four optical-fiber cable CPRI interface connection diagram of the present invention;
Fig. 3 is mRRU/mRFU embodiment schematic diagram of the present invention;
Fig. 4 is the schematic diagram of another embodiment of wireless communication system of the present invention.
Detailed description of the invention
Wireless base station device can be divided into radio equipment controller (RadioEquipmentController is called for short REC) and wireless device (RadioEquipment is called for short RE). The interface connecting REC and RE is properly termed as REC-RE interface.
Common public radio interface (CommonPublicRadioInterface is called for short CPRI) standard is the interface standard between REC and RE formulated by communications equipment manufacturer. In this standard, the REC-RE interface connecting REC and RE is called CPRI interface.
Open base station architecture motion (OpenBaseStationArchitectureInitiative is called for short OBSAI) standard is the interface standard between another REC and RE formulated by communications equipment manufacturer. In this standard, the REC-RE interface connecting REC and RE is called OBSAI interface.
The REC of different systems may include that master clock module, baseband processing module, baseband radio interface module etc. These functional modules of same standard or these functional modules of different systems highly integrated can be designed at one, such as it is integrated on one or more veneer, and it is arranged at an only small Base Band Unit (BasebandUnit of volume, it is called for short BBU) in box, form a Field Replaceable (FieldReplaceableUnit is called for short FRU).
The form of RE may include that Remote Radio Unit (RadioRemoteUnit, it is called for short RRU), radio frequency and filter unit (RadioandFilterUnit is called for short RFU), multimode RRU (mRRU), multi-mode RF U (mRFU) etc.
Embodiment of the present invention is mainly explained for the situation in WCDMA/CDMA bimodulus (W/C bimodulus), the bimodulus of other standard or many die combination, such as: GSM, CDMA, WCDMA, TD-SCDMA, LTE (LongTermEvolution), WIMAX, Ultra-Mobile Broadband (UltraMobileBroadband, it is called for short " UMB "), personal handyphone system (PersonalHandyphoneSystem, it is called for short " PHS "), or AIE (AirInterfaceEvolution, be called for short " AIE ") and any two kinds of standards of standard such as new radio communication standard of occurring of follow-up evolution or the combination of multiple types can analogize. embodiment of the present invention is mainly explained for CPRI interface, the interface type between other REC-RE, such as: the REC-RE proprietary protocol interface that OBSAI interface, miscellaneous equipment supplier oneself define can be analogized. in like manner, some appearance herein have the entity/equipment/equally possible use of device/unit of specific names and have entity/equipment/device/unit of same or like function and replace, and no longer superfluous chat.
Consult Fig. 1, the schematic diagram of an embodiment of wireless communication system of the present invention.
Wireless communication system includes a Wireless Telecom Equipment 110. Wireless Telecom Equipment 110 includes: at least one REC_103, and at least one supports the RE_101 of multimode, such as: mRRU or mRFU. Connected by cable 109 between REC_103 and RE_101, such as: optical fiber, cable, netting twine etc. In Fig. 1, it is represented by the connection of 109 by 101a and 103 in figure by the connection of 109 between REC_103 and RE_101, other RE (such as: 101b, 101c) and 103 is similar by the connection of 109, no longer draws, omitted in figure.
REC13 may include that support the master clock module 107 of at least two communication standard, baseband processing module 104, baseband radio interface module 105. The master clock module of described support at least two communication standard, baseband processing module and baseband radio interface module are relatively independent in logic, it is possible to be connected with each other by core bus or panel bus or CPRI electricity mouth cable mode. These functional modules of same standard or these functional modules of different systems highly integrated can be designed at one, are such as integrated on one or more veneer, and are arranged in an only small BBU box of volume, form a FRU.
Master clock module 107 can include the master clock module of different systems, such as: the C master clock module 107a of CDMA standard, and the W master clock module 107b of WCDMA standard. The master clock module of different systems can be physically separate master clock module, it is also possible to be the master clock module physically unified. One of ordinary skill in the art will appreciate that, it is illustrated as two independent master clock module 107a and 107b and is only a kind of logical description, two physical modules that 107a and 107b can be independent from physics realization, namely the master clock module of different systems is separate; Can also be the physical module physically unified, i.e. different systems master clock module altogether.
Baseband processing module 104 can include the baseband processing module of different systems, such as: the C baseband processing module 104a of CDMA standard, and the W baseband processing module 104b of WCDMA standard. The baseband processing module of different systems can be physically separate baseband processing module, it is also possible to be the baseband processing module physically unified. One of ordinary skill in the art will appreciate that, it is illustrated as two independent baseband processing module module 104a and 104b and is only a kind of logical description, two physical modules that 104a and 104b can be independent from physics realization, namely the baseband processing module of different systems is separate; Can also be the physical module physically unified, i.e. different systems baseband processing module altogether.
Baseband radio interface module 105 can include the baseband radio interface module of different systems, such as: the C baseband radio interface module 105a of CDMA standard, and the W baseband radio interface module 105b of WCDMA standard. The baseband radio interface module of different systems can be physically separate baseband radio interface module, it is also possible to be the baseband radio interface module physically unified. One of ordinary skill in the art will appreciate that, it is illustrated as two independent baseband radio interface module module 105a and 105b and is only a kind of logical description, two physical modules that 105a and 105b can be independent from physics realization, namely the baseband radio interface module of different systems is separate; Can also be the physical module physically unified, i.e. different systems cobasis band radio frequency interface module.
The master clock module of different systems, baseband processing module, baseband radio interface module are relatively independent all in logic, it is possible to be connected with each other by core bus or panel bus or CPRI electricity mouth cable mode. Each functional module of same standard or each functional module of different systems highly integrated can be designed at one, are such as integrated on one or more veneer, and are arranged in an only small BBU box of volume, form a FRU.
The baseband radio interface module of different systems connects the CPRI interface of the corresponding same communication standard of mRRU/mRFU respectively through cable, the CPRI interface making the data of transmission different communication standard is relatively independent, such that it is able to the process that clock synchronizes need not be realized in BBU, reach the convenient effect realizing dual-mode solution.
The REC-RE interface of the data transmitting different communication standard respectively is relatively independent, and the business data flow of multiple types is relatively independent, and a kind of standard traffic failure is without influence on the business of another kind of standard, and system reliability is higher. The carrier number that the REC of different systems can support can configure flexibly.
At least there is the RRU/RFU of two CPRI interfaces, generally its CPRI interface can be configured to a CPRI interface connect higher level equipment (such as: REC), another CPRI interface is used for subordinate's cascade, to support chain or the different networking mode such as annular or star. When for CPRI interface free time of subordinate's cascade, it is possible to by updating software release or Loading Control software, hardware is not done and changes, it is achieved idle CPRI interface is used and supports dual-mode base station solution. Mainly for dual-mode base station solution, the embodiment of the present invention is explained below. When there being two or more CPRI interface free time, it is possible to idle CPRI interface is used and supports Multi-Mode Base Station solution. Multi-Mode Base Station solution is similar with dual-mode base station solution, and those of ordinary skill in the art are based on the understanding to dual-mode base station solution embodiment of the present invention, it is possible to derives and learns, repeats no more.
Fig. 1 connects REC103 and RE101 corresponding same communication standard REC-RE interface between cable 109 may is that 22 core optical cables or 14 core optical cable, in order to realize different systems in REC baseband radio interface module (such as: C baseband radio interface module 105a and W baseband radio interface module 105b) connect with two CPRI interfaces of mRRU/mRFU respectively. So, W/C dual-mode base station scheme can just be supported by two independent CPRI interfaces. In the present embodiment, RE has two CPRI interfaces, supports two kinds of communication standards, and the CPRI number of ports of RE is corresponding with the communication standard number that RE supports. Transmitting the data of different communication standards between the REC-RE interface of the corresponding same communication standard of REC103 and RE101 respectively, i.e. the data of a pair REC-RE interface transmission WCDMA standard, REC-RE interface is transmitted the data of CDMA standard by another.
Consult Fig. 2, four optical-fiber cable CPRI interface connection diagram of the present invention.
CPRI0 in figure represents the CPRI interface supporting a kind of standard, and CPRI1 represents the CPRI interface supporting another kind of standard. As shown, in BBU side, the transmitting-receiving of CPRI0 and the transmitting-receiving of CPRI1 respectively account for two cores, four cores altogether; In RRU/RFU side, the transmitting-receiving of CPRI0 and the transmitting-receiving of CPRI1 respectively account for two cores, four cores altogether.
Consult Fig. 3, mRRU/mRFU embodiment schematic diagram of the present invention.
On the basis of the existing RRU/RFU with two CPRI interfaces, it is possible to by updating software release or Loading Control software, hardware is not done and changes, it is achieved idle CPRI interface is used and supports dual-mode base station solution. Two CPRI interfaces of the RRU/RFU with two CPRI interfaces are all operated under SLAVE pattern. At down direction: CPRI interface module extracts control information from the CPRI data stream of two kinds of standards and is transferred to main control module, extracts clock information and is transferred to clock module, extract carrier data information to middle radio-frequency module. Clock module provides clock information to RRU/RFU. The carrier data of two kinds of standards is respectively through after filtering and Digital Up Convert in middle radio-frequency module, and conjunction road is launched by radio frequency transmitting channel, thus realizing multiple types shared radio frequency transmission channel.
Be can be seen that by the description of above example, in wireless communication system embodiment provided by the invention, the REC-RE interface of at least two REC-RE interface same communication standard corresponding to REC of RE is connected with each other by cable, REC-RE interface is relatively independent, such that it is able to the process that clock synchronizes need not be realized in a communications system, reach convenient, to realize bimodulus, multi-mode solution at low cost effect.
Further, the embodiment of the present invention on the basis of single system base station, by increasing the standard function veneer in REC, can be changed the software of RE simultaneously, can realize Multi-Mode Base Station solution, it is achieved scheme is convenient smaller, and cost is low. Meanwhile, the business data flow of multiple types is relatively independent, and a kind of standard traffic failure is without influence on the business of another kind of standard, and system reliability is higher.
The REC interface module of different systems is relatively independent. The carrier number that the REC of different systems can support can configure flexibly.
Fig. 4 is the schematic diagram of another embodiment of wireless communication system of the present invention.
The REC co-sited point of different systems or common rack, be connected to multimode RE by different REC-RE interfaces and realize Multi-Mode Base Station solution.
Wireless communication system in Fig. 4, including: a Wireless Telecom Equipment 401, this Wireless Telecom Equipment includes:
The radio equipment controller REC_405 standard 1REC_405a and standard 2REC_405b, the REC of two different systems that support at least two communication standard are placed in a base station site 403;
Support the wireless device RE_409 of at least two communication standard;
This REC and this RE all includes two REC-RE interfaces 407; Described REC-RE interface supports different communication standard standard 1 and standard 2; Described REC-RE interface transmits standard 1 and the data of standard 2 respectively; And described REC-RE number of ports is corresponding with the communication standard number supported;
The REC-RE interface of the REC-RE interface same communication standard corresponding to RE of REC is connected with each other by cable, and namely the REC-RE interface _ 407a of standard 1 is connected with each other, and the REC-RE interface _ 407b of standard 2 is connected with each other.
Be can be seen that by the description of above example, in wireless communication system embodiment provided by the invention, the REC-RE interface of at least two REC-RE interface same communication standard corresponding to REC of RE is connected with each other by cable, REC-RE interface is relatively independent, such that it is able to the process that clock synchronizes need not be realized in a communications system, reach convenient, to realize bimodulus, multi-mode solution at low cost effect.
Further, the embodiment of the present invention on the basis of single system base station, by increasing the standard function veneer in REC, can be changed the software of RE simultaneously, can realize Multi-Mode Base Station solution, it is achieved scheme is convenient smaller, and cost is low. Meanwhile, the business data flow of multiple types is relatively independent, and a kind of standard traffic failure is without influence on the business of another kind of standard, and system reliability is higher.
The REC interface module of different systems is relatively independent. The carrier number that the REC of different systems can support can configure flexibly.
Above wireless communication system provided by the present invention, radio equipment controller and wireless device being described in detail by specific embodiment, the explanation of above example is only intended to help to understand method and the thought thereof of the present invention; Simultaneously for one of ordinary skill in the art, according to the thought of the present invention, all will change in specific embodiments and applications. In sum, this specification content should not be construed as limitation of the present invention.
Claims (4)
1. a wireless base station device, it is characterised in that:
Described wireless base station device includes a wireless device RE supporting an at least two communication standard and radio equipment controller REC supporting described at least two communication standard;
Described RE includes at least two REC-RE interface, the communication data stream of described at least two REC-RE interface transmission different communication standard, and described at least two REC-RE number of ports is corresponding with the communication standard number that described RE supports;
Described REC includes the master clock module of different systems, the baseband radio interface module of different systems, the baseband processing module of different systems and at least two REC-RE interface;
The REC-RE interface of at least two REC-RE interface same communication standard corresponding to described REC of described RE is connected with each other by cable;
Wherein, the RE of described support at least two communication standard includes: REC-RE interface module, main control module, clock module and middle radio-frequency module; Described REC-RE interface module is used for: extracts control information from the communication data stream of at least two communication standard and is transferred to described main control module, extracts clock information and is transferred to described clock module, extracts carrier data and is supplied to described middle radio-frequency module; Described main control module is used for processing described control information; Described middle radio-frequency module is used for: by the carrier data of at least two communication standard after filtering with Digital Up Convert after, close road launched by radio frequency transmitting channel; Described clock module is for providing clock information to RE.
2. wireless base station device as claimed in claim 1, it is characterised in that when described RE supports two kinds of communication standards and includes two REC-RE interfaces, described is connected to by cable: be connected with each other by 22 core optical cables or 14 core optical cable.
3. wireless base station device as claimed in claim 1 or 2, it is characterised in that described REC-RE interface is common public radio interface.
4. wireless base station device as claimed in claim 1 or 2, it is characterised in that described communication standard includes: GSM, CDMA, WCDMA, TD-SCDMA, LTE, WIMAX, UMB, PHS, AIE.
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| CN103686814B (en) * | 2013-12-25 | 2017-12-12 | 北京北方烽火科技有限公司 | Base Band Unit, base station and base station system |
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| US7567791B2 (en) * | 2005-09-19 | 2009-07-28 | Qualcomm Incorporated | Wireless terminal methods and apparatus for use in a wireless communications system that uses a multi-mode base station |
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