CN102215559A - Method for obtaining external clock signal by multimode base station and multimode base station - Google Patents
Method for obtaining external clock signal by multimode base station and multimode base station Download PDFInfo
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- CN102215559A CN102215559A CN2010101446505A CN201010144650A CN102215559A CN 102215559 A CN102215559 A CN 102215559A CN 2010101446505 A CN2010101446505 A CN 2010101446505A CN 201010144650 A CN201010144650 A CN 201010144650A CN 102215559 A CN102215559 A CN 102215559A
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- 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
- H04J3/0688—Change of the master or reference, e.g. take-over or failure of the master
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/0015—Synchronization between nodes one node acting as a reference for the others
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
- H04W88/10—Access point devices adapted for operation in multiple networks, e.g. multi-mode access points
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Abstract
The embodiment of the invention discloses a method for obtaining an external clock signal by a multimode base station and a multimode base station and relates to the field of mobile communication. The method comprises: one system module in the multimode base station obtains an external clock signal from an external clock source, and the system module provides the external clock signal to each system module of the multimode base station to serve as the internal clock reference signal of each system module. The invention also provides the other method which comprises: one public clock unit in the multimode base station obtains the external clock signal from the external clock source, and the public clock unit provides the external clock signal to each system module of the multimode base station to serve as the internal clock reference signal of each system module. According to the method, the multimode base station can work only by configuring the external clock source for one system module or the public clock unit, the requirement on application conditions can be greatly lowered, the application scene is more flexible, and the method can be widely applied and developed.
Description
Technical field
The present invention relates to moving communicating field, particularly a kind of Multi-Mode Base Station obtains the method and the Multi-Mode Base Station of external timing signal.
Background technology
Along with Multi-Mode Base Station has appearred in the development of technology; so-called Multi-Mode Base Station is the base station that can support multiple wireless standard; be called the GU dual-mode base station such as the base station that can support GSM and two kinds of wireless standards of UMTS simultaneously; the dual-mode base station that two kinds of standards of UMTS and CDMA are formed; the base station that two kinds of standards of UMTS and LTE are formed, the three mould base stations that GSM, UMTS, three kinds of standards of LTE are formed etc.According to the needs of application scenarios, Multi-Mode Base Station can be divided into multimode macro base station and distributed Multi-Mode Base Station.
Multi-Mode Base Station is to realize that with the control veneer of stack different systems wherein, the control veneer of each standard is integrated with the standard module that is used to realize this standard business, and the formation schematic diagram of multimode macro base station is shown as Fig. 1.Business in the Multi-Mode Base Station between each standard module is that mutually independently each standard module need independently be obtained external timing signal and carry out work.With the GU dual-mode base station is that example is specifically described; referring to Fig. 2; in this application scenarios; GSM standard module and UMTS standard module are independently obtained the internal clocking reference signal of external timing signal as oneself by external clock reference separately; be that GSM standard module is obtained external timing signal by transmission network from the IP clock server, UMTS standard module is obtained external timing signal by transmission network from network clock source.
In the existing scheme; need independently to obtain external timing signal separately between a plurality of standard modules in the Multi-Mode Base Station from external clock reference; as the internal clocking reference signal of oneself; in actual applications; require operator that the external clock reference of every kind of required type of standard module of Multi-Mode Base Station must be able to be provided; to using having relatively high expectations of condition; in scene shown in Figure 2; if operator can not provide the IP clock server; then there is the problem that can't obtain external timing signal in GSM standard module; therefore, the application and the development of Multi-Mode Base Station have been limited greatly.
Summary of the invention
Method and Multi-Mode Base Station that the embodiment of the invention provides a kind of Multi-Mode Base Station to obtain external timing signal.
The method that the embodiment of the invention provides a kind of Multi-Mode Base Station to obtain external timing signal, described method comprises:
A standard module in the Multi-Mode Base Station is obtained external timing signal from external clock reference;
A described standard module offers each standard module of Multi-Mode Base Station with described external timing signal, as the internal clocking reference signal of each standard module.
The method that the embodiment of the invention also provides a kind of Multi-Mode Base Station to obtain external timing signal, described method comprises:
A common clock unit in the Multi-Mode Base Station obtains external timing signal from external clock reference;
Described common clock unit offers each standard module of Multi-Mode Base Station with described external timing signal, as the internal clocking reference signal of each standard module.
The embodiment of the invention provides a kind of Multi-Mode Base Station; comprise: a plurality of different systems modules; one of them standard module is used for obtaining external timing signal from external clock reference; and described external timing signal offered each standard module in the Multi-Mode Base Station, as the internal clocking reference signal of described each standard module.
The embodiment of the invention also provides a kind of Multi-Mode Base Station; comprise: the module of common clock unit and a plurality of different systems; wherein the common clock unit is used for obtaining external timing signal from external clock reference; and described external timing signal offered each standard module in the Multi-Mode Base Station, as the internal clocking reference signal of described each standard module.
The Multi-Mode Base Station that the embodiment of the invention provides obtains the method and the Multi-Mode Base Station of external timing signal, and beneficial effect is:
Multi-Mode Base Station in the embodiment of the invention; as long as guarantee to be one of them standard module or a common clock configuration of cells external clock reference; just can provide internal reference clock signal, thereby a plurality of standard modules in this Multi-Mode Base Station can be worked all just for each standard module in the Multi-Mode Base Station.Therefore, the Multi-Mode Base Station that the embodiment of the invention provides obtains the method and the Multi-Mode Base Station of external timing signal, and the requirement of using condition is reduced greatly, makes its application scenarios more flexible, can be more widely used and develop.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 constitutes schematic diagram for the multimode macro base station;
Fig. 2 is a kind of GU dual-mode base station application scenarios schematic diagram;
A kind of Multi-Mode Base Station that Fig. 3 provides for the embodiment of the invention obtains the method flow diagram of external timing signal;
A kind of Multi-Mode Base Station that Fig. 4 provides for the embodiment of the invention obtains the method flow diagram of external timing signal;
Fig. 5 is the method flow diagram of the clock bus that can be shared by each standard module in the inner setting of Multi-Mode Base Station in the embodiment of the invention;
Fig. 6 is a clock bus configuration schematic diagram in the embodiment of the invention;
Fig. 7 is a clock bus configuration schematic diagram in the embodiment of the invention;
The application scenarios schematic diagram of a kind of GU dual-mode base station sharing E 1/T1 line clock that Fig. 8 provides for the embodiment of the invention;
A kind of dual-mode base station that Fig. 9 provides for the embodiment of the invention is shared the application scenarios schematic diagram of Clock Card clock signal;
The another kind of dual-mode base station that Figure 10 provides for the embodiment of the invention is shared the application scenarios schematic diagram of Clock Card clock signal;
A kind of Multi-Mode Base Station structured flowchart that Figure 11 provides for the embodiment of the invention;
A kind of Multi-Mode Base Station structured flowchart that Figure 12 provides for the embodiment of the invention;
A kind of Multi-Mode Base Station structured flowchart that Figure 13 provides for the embodiment of the invention;
A kind of Multi-Mode Base Station that Figure 14 provides for the embodiment of the invention obtains the method flow diagram of external timing signal;
Figure 15 is a kind of Multi-Mode Base Station structured flowchart of the embodiment of the invention;
Figure 16 is a kind of Multi-Mode Base Station structured flowchart of the embodiment of the invention;
Figure 17 is a kind of Multi-Mode Base Station structured flowchart of the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making all other embodiment that obtained under the creative work prerequisite.
In the prior art; each standard module in the Multi-Mode Base Station; its line clock interface unit or Clock Card are separately independently by obtaining external timing signal for the external clock reference of its configuration in advance; the master clock unit of each standard module obtains the internal clocking reference signal of external timing signal as oneself by modes such as serial ports from the line clock interface unit of this standard module or Clock Card; further; the master clock unit separately with the internal clocking reference signal through frequency division, phase-locked and phase place adjustment, as the synchronised clock of standard business separately.
Owing to need independently to obtain external timing signal separately between a plurality of standard modules in the Multi-Mode Base Station from external clock reference; as the internal clocking reference signal of oneself; in actual applications; require operator to provide external clock reference for every kind of standard module of Multi-Mode Base Station; very high to the requirement of using condition, limited the application and the development of Multi-Mode Base Station greatly.Method and Multi-Mode Base Station that the embodiment of the invention provides Multi-Mode Base Station to obtain external timing signal require to reduce greatly to the application conditions of external clock reference, can promote Multi-Mode Base Station to be more widely used and develop.
Referring to Fig. 3, the embodiment of the invention provides a kind of Multi-Mode Base Station to obtain the method for external timing signal, comprises the steps:
Step S301: a standard module in the Multi-Mode Base Station is obtained external timing signal from external clock reference.
Step S302: this standard module offers each standard module in the Multi-Mode Base Station with described external timing signal, as the internal clocking reference signal of described each standard module.
The embodiment of the invention can be applied to the multimode scene that various different systems are formed; be applicable to the Multi-Mode Base Station that various standard module combinations such as GSM, UMTS, CDMA, WIMAX, LTE form; dual-mode base station such as GSM and two kinds of standards compositions of UMTS; the dual-mode base station that two kinds of standards of UMTS and CDMA are formed; the base station that two kinds of standards of UMTS and LTE are formed, the three mould base stations that GSM, UNTS, LTE form etc.Obviously, the Multi-Mode Base Station in the present embodiment can be supported two or more standards.
The embodiment of the invention is not only applicable to the multimode macro base station, is applicable to distributed Multi-Mode Base Station yet, to the form and the no requirement (NR) of base station.
As seen; in the embodiment of the invention; a standard module in the Multi-Mode Base Station is obtained external timing signal from external clock reference, and described external timing signal is offered each standard module in the Multi-Mode Base Station, as the internal clocking reference signal of described each standard module.
The a plurality of standard modules in this Multi-Mode Base Station like this,, just can provide internal reference clock signal, just then can be worked for each standard module in the Multi-Mode Base Station as long as guarantee external clock reference into the required type of one of them standard block configuration.Therefore, the Multi-Mode Base Station that the embodiment of the invention provides obtains the method for external timing signal, and the requirement of using condition is reduced greatly, makes its application scenarios more flexible, can be more widely used and develop.
In actual applications, having disposed mode that the standard module of external clock reference offers other standard module with its external timing signal that obtains has multiplely, referring to Fig. 4, a kind of specific implementation is shown.
Step S401: the clock bus that can be shared by each standard module in the inner setting of Multi-Mode Base Station.
Here the clock bus of She Zhiing can adopt MLVDS (Low-Voltage DifferentialSignaling, Low Voltage Differential Signal) mode, also can adopt alternate manner, all can such as LVPECL (low-voltage positive-referenced emitter coupled logic, the pseudo-emitter coupled logic of low-voltage) mode etc.
The standard module that comprises a plurality of different systems in the Multi-Mode Base Station when specific implementation, can be integrated into these standard modules on the different veneers, for example the standard module of an integrated different systems on veneer.In Multi-Mode Base Station inside clock bus is set; this clock bus can be shared by these a plurality of standard modules; for example when clock bus is one; each standard module all is connected with described clock bus; when clock bus is many; concerning each standard module, all be connected with every clock bus.
Concrete, referring to Fig. 5, the clock bus in that the inner setting of Multi-Mode Base Station can be shared by each standard module specifically comprises:
Step 501: the clock bus that energy transmission line clock signal or Clock Card clock signal are set in Multi-Mode Base Station inside.
Wherein, line clock can be E1/T1 clock signal, FE/GE clock signal etc.The Clock Card clock signal is such as being GPS (Global Positioning System, global positioning system) clock signal or BITS (Building Integrated Timing Supply System, building integrated timing supply) clock signal etc.
Step 502: will dispose the line clock interface unit of standard module of external clock reference and/or Clock Card and described clock bus and connect; The master clock unit and the described clock bus of each standard module are connected.
Referring to Fig. 6, if clock bus is one, the line clock interface unit of each standard module and/or Clock Card and described clock bus can be connected, the master clock unit and the described clock bus of each standard module connected.
Referring to Fig. 7, if clock bus is many, the line clock interface unit and/or the Clock Card of each standard module can be connected with every clock bus respectively, the master clock unit of each standard module is connected with every clock bus respectively.
Above-mentioned two kinds of methods to set up, the line clock interface unit and/or the Clock Card of each standard module, and the master clock unit all establishes with whole clock bus and is connected.In concrete the application; if clock bus is many; can hold consultation according to the configuring condition of current external clock reference; determine that line clock interface unit and/or Clock Card are to clock bus output external timing signal wherein; the master clock unit obtains external timing signal from this clock bus; good through consultation mutual corresponding relation; never obtain external timing signal on the clock bus of signal in the time of can avoiding sharing clock; make that this Multi-Mode Base Station application scenarios is more flexible, adaptability is stronger.
In the practical application, connected mode between each standard module and the clock bus not merely is limited to above-mentioned two kinds of connected modes, can design voluntarily according to concrete application, as long as overall thought is one or several standard module in a plurality of standard modules obtained external timing signal from the external clock reference external with it after, can utilize this connection that this external timing signal is shared on clock bus and get final product to other standard module, the embodiment of the invention does not limit.
Need to prove, when external clock reference is E1/T1 line clock source, describedly obtain external timing signal, export described external timing signal to clock bus and specifically comprise from external clock reference:
The line clock interface unit of a described standard module obtains the E1/T1 line clock from described E1/T1 line clock source, exports described E1/T1 line clock to clock bus.
Or, when external clock reference is GPS (Global Positioning System, global positioning system) clock source, describedly obtain external timing signal from external clock reference, export described external timing signal to clock bus and specifically comprise:
The Clock Card of a described standard module obtains the gps clock signal from described gps clock source, and the Clock Card in this standard module exports the 1pps signal in the gps clock signal to Multi-Mode Base Station clock internal bus; And the master clock unit in the described standard module sends to this absolute time signal the master clock unit of other standard module from Clock Card extraction absolute time signal.
Or, when external clock reference is BITS (Building Integrated Timing Supply System, building integrated timing supply) during the clock source, describedly obtain external timing signal, export described external timing signal to clock bus and specifically comprise from external clock reference:
The Clock Card of a described standard module obtains the BITS clock signal from described bits timing source, exports described BITS clock signal to clock bus.
Usually; can be set by the clock bus that each standard module is shared in advance in Multi-Mode Base Station inside; like this; in application; just the external timing signal that obtains from external clock reference can be exported in real time on this clock bus; each standard module can be in real time be obtained the internal clocking reference signal of external timing signal as oneself from this clock bus, and all clock bus is provided with when need not to carry out external timing signal at every turn and obtaining.
Step S402: the standard module that has disposed external clock reference is obtained external timing signal from described external clock reference, exports described external timing signal to clock bus.
In the embodiment of the invention; owing to be provided with the clock bus that to be shared by each standard module in Multi-Mode Base Station inside; thereby need not restriction and be necessary for all configuring external clock sources of whole standard modules; the embodiment of the invention can be applied to whole standard modules and all dispose external clock reference, the external clock reference that also can be applied to part standard block configuration.
Step S403: each standard module is obtained external timing signal from described clock bus, with the external timing signal that obtained as separately internal clocking reference signal.
Need to prove that a standard module in the Multi-Mode Base Station comprises clock signal output unit and master clock unit, any standard module comprises the master clock unit at least in other standard module.Wherein, described clock signal output unit is used for obtaining external timing signal from external clock reference, exports described external timing signal to clock bus; Concrete, when external clock reference is E1/T1 line clock source or FE/GE line clock source, the clock signal output unit is specially the line clock interface unit, and when external clock reference was bits timing source or gps clock source, the clock signal output unit was specially Clock Card.Described clock bus is by setting in advance in described Multi-Mode Base Station inside and can being shared by each standard module.Described master clock unit is used for obtaining described external timing signal from described clock bus, as the internal clocking reference signal of this standard module.That is to say, dispose the standard module of external clock reference, obtain external timing signal from external clock reference after, export clock bus to; The master clock unit of this standard module and other standard module obtains external timing signal from clock bus, as the internal clocking reference signal of this standard module.
In the practical application, can also comprise the corresponding relation of consulting between each standard module and described clock bus.
Usually, can transmission lines clock signal (such as the E1/T1 line clock) on every clock bus, or Clock Card clock signal (such as gps clock signal, BITS clock signal), the clock signal output unit of each standard module (being specially line clock interface unit or Clock Card) can be exported the own external timing signal that obtains from external clock reference at arbitrary clock bus, but can only transmit a clock signal simultaneously on every clock bus.
The master clock unit of each standard module can obtain external timing signal from arbitrary clock bus, but the master clock unit of each standard module can only extract external timing signal from a clock bus.
Each standard module can consult to adopt the mode of sharing clock bus to share external clock reference, can consult the Clock Card of a described standard module or the master clock unit of line clock interface unit and each standard module in advance links to each other with certain bar clock bus respectively, then the Clock Card of a standard module or line clock interface unit are exported external timing signal on this clock bus, then the master clock unit of each standard module just can obtain external timing signal from this clock bus, as inside OCXO (Oven Controlled Crystal Oscillator, constant temperature crystal voltage controlled oscillator) reference separately.Clock Card or the line clock interface unit that also can consult a described standard module in advance link to each other with at least one of a plurality of clock bus, the master clock unit of each standard module links to each other with this at least one clock bus respectively, the Clock Card of a then described standard module or line clock interface unit can be exported external timing signal on several corresponding with it clock bus, then the master clock unit of each standard module can be respectively obtains external timing signal from the clock bus of correspondence, as inside OCXO reference separately.
Each standard module can also consult to adopt the mode that exclusively enjoys clock bus to exclusively enjoy external clock reference, if promptly each standard module respectively takies a clock bus, obtain the line clock interface unit of own standard module or the external timing signal of Clock Card output independently, as inside OCXO reference separately.
Wherein, mode that adopt to share clock bus consult the corresponding relation between each standard module and described clock bus method such as being:
Rule according to an external timing signal of a clock bus transmission is held consultation, determine a plurality of corresponding different respectively clock bus of clock signal output unit that disposed the standard module (being a plurality of described standard modules) of external clock reference, and can hold consultation from the rule that a clock bus obtains external timing signal according to a standard module, the corresponding above-mentioned and described clock signal output unit in master clock unit of determining each standard module has arbitrary clock bus of corresponding relation.
The mode that employing exclusively enjoys clock bus is consulted corresponding relation between each standard module and described clock bus such as can being to comprise:
According to external timing signal of a clock bus transmission, and hold consultation from the rule that a clock bus obtains external timing signal in a master clock unit, determine the corresponding a plurality of clock bus of clock signal output unit of a described standard module, the master clock unit of each standard module takies different clock bus respectively, wherein said clock signal output unit is used for to clock bus output external timing signal, and described master clock unit is used for obtaining external timing signal from clock bus.
Through consultation; any determine to bar clock bus output external timing signal (can control) by the output control sub unit; reach from any bar clock bus and obtain external timing signal (can control) by selecting control sub unit; seize the situation of clock bus when avoiding sharing clock; never obtain external timing signal on the clock bus of signal in the time of also can avoiding sharing clock; make that this Multi-Mode Base Station application scenarios is more flexible, adaptability is stronger.
Usually, can when configuring external clock source, consult the corresponding relation between each standard module and clock bus, after externally clock source when configuration consult the corresponding relation between each standard module and clock bus, in application, just can be with the external timing signal that obtains from external clock reference, control by its line clock interface unit or Clock Card, export on the corresponding clock bus according to the described corresponding relation of consulting to determine; Same, each standard module is controlled by its master clock unit, obtain the internal clocking reference signal of external timing signal according to the corresponding relation of consult determining from the corresponding clock bus, and all the corresponding relation between each standard module and clock bus is held consultation when need not to carry out external timing signal at every turn and obtaining as oneself.
Accordingly, disposed the standard module of external clock reference and obtained external timing signal, controlled, exported on the corresponding clock bus according to the described corresponding relation of consulting to determine by its line clock interface unit or Clock Card from external clock reference.
Each standard module is controlled by the selection control sub unit of its master clock unit, obtains the internal clocking reference signal of external timing signal as oneself according to the corresponding relation of consulting to determine from the corresponding clock bus.
As seen, in the embodiment of the invention,, after the standard module that has then disposed external clock reference is obtained external timing signal from this external clock reference, export it to clock bus at the clock bus that the inner setting of Multi-Mode Base Station can be shared by each standard module; Each standard module just can be obtained external timing signal from clock bus, as the internal clocking reference signal of oneself.Like this, whether can all dispose the external clock reference of required type for every kind of standard module, as long as can be the external clock reference of the required type of one of them standard block configuration at least, then a plurality of standard modules in this Multi-Mode Base Station just can be worked.Therefore, the Multi-Mode Base Station that the embodiment of the invention provides obtains the method and the Multi-Mode Base Station of external timing signal, and the requirement of using condition is reduced greatly, makes its application scenarios more flexible, can be more widely used and develop.
Necessarily require all to dispose corresponding external clock reference in the prior art relatively, during the embodiment of the invention provides, can adopt the mode of sharing clock bus to share external clock reference for each standard module, thereby, waste effectively avoided to resource.
Referring to Fig. 8, the embodiment of the invention provides a kind of application scenarios of GU dual-mode base station sharing E 1/T1 line clock.
In the GU dual-mode base station; be UMTS standard block configuration external clock reference (being network clock source shown in Fig. 8); after UMTS standard module is obtained the E1/T1 line clock from network clock source; share to GSM standard module by being arranged on GU dual-mode base station clock internal bus; promptly the master clock unit of two standard modules all obtains the E1/T1 line clock from clock bus; as internal clocking reference signal separately; after adjusting through frequency division, phase-locked and phase place further, as the synchronised clock of standard business separately.
Sharing line clock source side formula can obtain external timing signal from the external clock reference of arbitrary standard block configuration of dual-mode base station and share to another standard module.The concrete scene that Multi-Mode Base Station is shared the line clock source is very many; pass through external clock source sharing E 1/T1 line clock such as GSM standard module; or UMTS standard module is shared FE/GE line clock or the like by the external clock source; referring to table 1; the concrete condition of the line clock that each standard pattern of GU dual-mode base station can share is shown; it is the example explanation that present embodiment is only listed a kind of scene, does not have essential distinction on other combine scenes principle, does not list one by one.
Table 1
Referring to Fig. 9, the embodiment of the invention provides a kind of dual-mode base station to share the application scenarios of Clock Card clock signal.
Dual-mode base station, such as comprising GSM standard module and UMTS standard module, can be on GSM standard module the configurable clock generator card, and the external gps clock of configurable clock generator card source.After the Clock Card of GSM standard module obtains the gps clock signal from external gps clock source, Clock Card exports the 1pps signal (being to be 1 second pulse signal in the time interval) of gps clock to clock bus, this 1pps signal is given the master clock unit of two standard modules by this clock bus.In addition; after the absolute time signal is extracted from Clock Card by the master clock unit of the GSM standard module that has disposed Clock Card; after for example can extracting by the RS485 serial ports; send to the master clock unit of UMTS standard module again; for example can give the master clock unit of UMTS standard module by BURST (burst) message; in a Multi-Mode Base Station, can be provided with the BURST bus; this BURST bus can be connected with the master clock unit of each standard module, and BURST message can be sent to the master clock unit of other standard module by the BURST bus from the master clock unit of a standard module.1pps signal that GSM standard module and UMTS standard module are obtained it respectively and absolute time signal are as its internal clocking reference signal.Wherein, the 1pps signal is used to realize Frequency Synchronization, promptly is used for frequency lock, and the absolute time signal is used to realize time synchronized, promptly is used for phase locking.Should be with in the scene, clock interface between GSM standard module and UMTS standard module and the transmission network is FE/GE line clock interface, in the practical application, clock interface between GSM standard module and UMTS standard module and the transmission network also can be other clock interface mode, shown in above-mentioned table 1.
In the embodiment of the invention, the clock Source Type that Clock Card articulates is not limited to gps clock, also is suitable for other external clock reference.Only list several application scenarioss in the foregoing description, other application scenarios principle is identical, does not list one by one.
Referring to Figure 10, the embodiment of the invention provides another kind of dual-mode base station to share the application scenarios of Clock Card clock signal.
Dual-mode base station can be on a standard module configurable clock generator card, and the external bits timing source of configurable clock generator card, two standard modules can be shared the BITS clock signal of Clock Card output.After Clock Card obtains the BITS clock signal from external bits timing source, export the BITS clock signal of 2.048MHz to clock bus, the BITS clock signal of this 2.048MHz is given the master clock unit of two standard modules by clock bus.
Wherein, the concrete scene that Multi-Mode Base Station is shared gps clock source or bits timing source by Clock Card is very many, and it doesn't matter with transmission means, goes out the mode etc. that E1/T1, UMTS go out FE/GE such as GSM.
In the embodiment of the invention, the clock Source Type that Clock Card articulates is not limited to gps clock or BITS clock, also is suitable for other external clock reference, as RGPS clock, the Big Dipper clock etc.Only list several application scenarioss in the foregoing description, other application scenarios principle can be the application scenarios of gps clock or BITS clock referring to external clock reference, does not list one by one herein.
Referring to Figure 11, the embodiment of the invention provides a kind of Multi-Mode Base Station, comprising:
The module of a plurality of different systems; one of them standard module 1101 is used for obtaining external timing signal from external clock reference; and described external timing signal offered each standard module in the Multi-Mode Base Station, as the internal clocking reference signal of described each standard module.
Need to prove that described each standard module comprises above-mentioned standard module 1101 and other standard module 1102 (being the standard module except that standard module 1101 in the Multi-Mode Base Station).
The embodiment of the invention can be applied to the multimode scene that various different systems are formed; be applicable to the Multi-Mode Base Station that various standard module combinations such as GSM, UMTS, CDMA, WIMAX, LTE form; dual-mode base station such as GSM and two kinds of standards compositions of UMTS; the dual-mode base station that two kinds of standards of UMTS and CDMA are formed; the base station that two kinds of standards of UMTS and LTE are formed, the three mould base stations that GSM, UNTS, LTE form etc.
The embodiment of the invention is not only applicable to the multimode macro base station, is applicable to distributed Multi-Mode Base Station yet.
As seen; in the embodiment of the invention; a standard module in the Multi-Mode Base Station is obtained external timing signal from external clock reference, and described external timing signal is offered each standard module in the Multi-Mode Base Station, as the internal clocking reference signal of described each standard module.Like this, whether can all dispose the external clock reference of required type for every kind of standard module, as long as can be the external clock reference of the required type of one of them standard block configuration at least, then a plurality of standard modules in this Multi-Mode Base Station just can be worked.Therefore, the Multi-Mode Base Station that the embodiment of the invention provides obtains the method and the Multi-Mode Base Station of external timing signal, and the requirement of using condition is reduced greatly, makes its application scenarios more flexible, can be more widely used and develop.
Referring to Figure 12, in one embodiment of the present of invention, a described standard module 1101 comprises clock signal output unit 1201 and master clock unit 1202, and any standard module all comprises master clock unit 1202 at least in described other standard module 1102;
The clock signal output unit 1201 of a described standard module 1101, be used for obtaining BITS clock signal or E1/T1 line clock or FE/GE line clock, export BITS clock signal or E1/T1 line clock or FE/GE line clock to clock bus from external clock reference; Described clock bus is by setting in advance in described Multi-Mode Base Station inside and can being shared by each standard module;
The master clock unit 1202 of described each standard module is used for obtaining BITS clock signal or E1/T1 line clock or FE/GE line clock from described clock bus, as the internal clocking reference signal of this standard module.
Described clock bus links to each other with the clock signal output unit 1201 of a described standard module and the master clock unit 1202 of each standard module respectively.
Concrete, external clock reference can be E1/T1 line clock source, the clock signal output unit 1201 of a described standard module 1101 can be used for obtaining the E1/T1 line clock from external clock reference, exports the E1/T1 line clock to Multi-Mode Base Station clock internal bus;
The master clock unit 1202 of described each standard module can be used for obtaining the E1/T1 line clock from described clock bus, as the internal clocking reference signal of this standard module.
Perhaps external clock reference can be a bits timing source, the clock signal output unit 1201 of a described standard module is specially Clock Card, can be used for obtaining the BITS clock signal, export the BITS clock signal to Multi-Mode Base Station clock internal bus from external clock reference;
The master clock unit 1202 of described each standard module can be used for obtaining the BITS clock signal from described clock bus, as the internal clocking reference signal of this standard module.
Referring to Figure 13, in an alternative embodiment of the invention, external clock reference can be GPS (global positioning system) clock source, a described standard module 1101 comprises clock signal output unit 1301 and master clock unit 1302, and any standard module all comprises master clock unit 1303 at least in described other standard module 1102.
Concrete, the clock signal output unit 1301 of a described standard module 1101 specifically is a Clock Card, is used for obtaining the gps clock signal from external clock reference, exports the 1pps signal in the gps clock signal to Multi-Mode Base Station clock internal bus;
The master clock unit 1302 of a described standard module 1101, be used for obtaining the absolute time signal from Clock Card, obtain described 1pps signal from described clock bus, with described 1pps signal and described absolute time signal as a described standard module 1101 internal clocking reference signals; And the master clock unit 1303 that this absolute time signal is sent to other standard module;
The master clock unit 1303 of described other standard module 1102, can be used for obtaining described 1pps signal from described clock bus, receive the absolute time signal from the master clock unit of a described standard module, with described 1pps signal and described absolute time signal as the internal clocking reference signal.
Further, the master clock unit 1302 of a described standard module 1101 specifically can extract the absolute clock signal by serial ports from described Clock Card, and the absolute clock signal is sent to the master clock unit 1303 of other standard module 1102 by BURST message.
In the another embodiment of the present invention, Multi-Mode Base Station can further include negotiation element, is used to consult the corresponding relation between each standard module and described clock bus; Then
Described clock signal output unit or Clock Card specifically are used for: obtain external timing signal from the external clock reference of this standard block configuration, with the described corresponding relation that described external timing signal is determined according to described negotiation element, export corresponding clock bus to;
Described master clock unit specifically is used for: the described corresponding relation of determining according to described negotiation element, obtain external timing signal from the clock bus of correspondence, with the external timing signal that the obtained internal clocking reference signal as this standard module.
Referring to Figure 14, the embodiment of the invention also provides a kind of Multi-Mode Base Station to obtain the method for external timing signal, comprising:
S1401: a common clock unit in the Multi-Mode Base Station obtains external timing signal from external clock reference.
S1402: described common clock unit offers each standard module of Multi-Mode Base Station with described external timing signal, as the internal clocking reference signal of each standard module.
Need to prove; in the embodiment of the invention; common clock unit of configuration in Multi-Mode Base Station; this common clock unit can be line clock interface unit or Clock Card; the common clock unit links to each other with clock bus in being arranged on Multi-Mode Base Station, is connected with each standard module by clock bus.
The embodiment of the invention can be applied to the multimode scene that various different systems are formed; be applicable to the Multi-Mode Base Station that various standard module combinations such as GSM, UMTS, CDMA, WIMAX, LTE form; dual-mode base station such as GSM and two kinds of standards compositions of UMTS; the dual-mode base station that two kinds of standards of UMTS and CDMA are formed; the base station that two kinds of standards of UMTS and LTE are formed, the three mould base stations that GSM, UNTS, LTE form etc.
The embodiment of the invention is not only applicable to the multimode macro base station, is applicable to distributed Multi-Mode Base Station yet.
As seen; in the embodiment of the invention; whether can all dispose the external clock reference of required type for every kind of standard module; as long as at least can be for the common clock configuration of cells external clock reference; then a plurality of standard modules in this Multi-Mode Base Station just can be worked; thereby make the requirement of using condition reduced greatly that application scenarios is more flexible, can be more widely used and develop.
In one embodiment of the present of invention, described common clock unit offers each standard module of Multi-Mode Base Station with described external timing signal, specifically comprises as the internal clocking reference signal of each standard module:
Described common clock unit exports E1/T1 line clock or FE/GE line clock or building integrated timing supply BITS clock to Multi-Mode Base Station clock internal bus;
The master clock unit of each standard module obtains described E1/T1 line clock or FE/GE line clock or BITS clock signal from described clock bus respectively, as the internal clocking reference signal of each standard module.
In the another embodiment of the present invention, described common clock unit offers each standard module of Multi-Mode Base Station with described external timing signal, comprises as the internal clocking reference signal of each standard module:
Described common clock unit exports the 1pps signal in the gps clock signal to Multi-Mode Base Station clock internal bus; And the master clock unit of a standard module sends to the absolute time signal master clock unit of other standard module from common clock unit extraction absolute time signal;
The master clock unit of each standard module obtains described 1pps signal from described clock bus respectively, with described 1pps signal and the described absolute time signal internal clocking reference signal as each standard module.
Further, the described master clock unit that this absolute time signal is sent to other standard module can comprise:
This absolute time signal is sent to the master clock unit of other standard module by BURST message.
Need to prove that the correlation technique feature of the inventive method embodiment can repeat no more referring to technical characterictic described in said method embodiment and the Multi-Mode Base Station embodiment herein.
Referring to Figure 15; the embodiment of the invention also provides a kind of Multi-Mode Base Station; comprise: common clock unit 1501 and a plurality of different systems module 1502; wherein common clock unit 1501 is used for obtaining external timing signal from external clock reference; and described external timing signal offered each standard module 1502 in the Multi-Mode Base Station, as the internal clocking reference signal of described each standard module.
Need to prove, in the embodiment of the invention, common clock unit of configuration in Multi-Mode Base Station, this common clock unit can be line clock interface unit or Clock Card, is connected with each standard module by the clock bus that is arranged in the Multi-Mode Base Station.
The embodiment of the invention can be applied to the multimode scene that various different systems are formed; be applicable to the Multi-Mode Base Station that various standard module combinations such as GSM, UMTS, CDMA, WIMAX, LTE form; dual-mode base station such as GSM and two kinds of standards compositions of UMTS; the dual-mode base station that two kinds of standards of UMTS and CDMA are formed; the base station that two kinds of standards of UMTS and LTE are formed, the three mould base stations that GSM, UNTS, LTE form etc.
The embodiment of the invention is not only applicable to the multimode macro base station, is applicable to distributed Multi-Mode Base Station yet.
As seen; in the embodiment of the invention; whether can all dispose the external clock reference of required type for every kind of standard module; as long as at least can be for the common clock configuration of cells external clock reference; then a plurality of standard modules in this Multi-Mode Base Station just can be worked; thereby make the requirement of using condition reduced greatly that application scenarios is more flexible, can be more widely used and develop.
Referring to Figure 16, in one embodiment of the present of invention, described common clock unit 1601 is used for obtaining BITS clock signal or E1/T1 line clock or FE/GE line clock from external clock reference, exports BITS clock signal or E1/T1 line clock or FE/GE line clock to Multi-Mode Base Station clock internal bus;
The master clock unit 1600 of described each standard module 1602 is used for obtaining BITS clock signal or E1/T1 line clock or FE/GE line clock from described clock bus, as the internal clocking reference signal of this standard module.
Referring to Figure 17, in the another embodiment of the present invention, described common clock unit 1701 is used for obtaining the gps clock signal from external clock reference, exports the 1pps signal in the gps clock signal to Multi-Mode Base Station clock internal bus;
Master clock unit 17021 in one of them standard module 1702 is used for the 1701 extraction absolute time signals from described common clock unit, this absolute time signal is sent to the master clock unit 17031 of other standard module 1703; And with described 1pps signal and described absolute time signal internal clocking reference signal as a described standard module 1702;
Master clock unit 17031 in described other standard module 1703, be used for obtaining described 1pps signal from described clock bus, and 1701 receive the absolute time signals from described common clock unit, with described 1pps signal and described absolute time signal as the internal clocking reference signal.
Need to prove that the correlation technique feature of the embodiment of the invention can repeat no more referring to technical characterictic described in said method embodiment and the Multi-Mode Base Station embodiment herein.
Need to prove, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key element of clearly not listing, or also be included as this process, method, article or equipment intrinsic key element.Do not having under the situation of more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
One of ordinary skill in the art will appreciate that, realize that all or part of step in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in the computer read/write memory medium, this program comprises that some instructions are in order to carry out the described method of each embodiment of the present invention when carrying out.Storage medium described here, as: ROM/RAM, magnetic disc, CD etc.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all be included in protection scope of the present invention.
Claims (16)
1. a Multi-Mode Base Station obtains the method for external timing signal, it is characterized in that described method comprises:
A standard module in the Multi-Mode Base Station is obtained external timing signal from external clock reference;
A described standard module offers each standard module of Multi-Mode Base Station with described external timing signal, as the internal clocking reference signal of each standard module.
2. according to the described method of claim 1, it is characterized in that, when external clock reference is E1/T1 line clock source or FE/GE line clock source,
A described standard module offers each standard module of Multi-Mode Base Station with described external timing signal, comprises as the internal clocking reference signal of each standard module:
Line clock interface unit in the described standard module exports E1/T1 line clock or FE/GE line clock to Multi-Mode Base Station clock internal bus;
The master clock unit of each standard module obtains described E1/T1 line clock or FE/GE line clock from described clock bus respectively, as the internal clocking reference signal of each standard module.
3. according to the described method of claim 1, it is characterized in that, when external clock reference is the building integrated timing supply bits timing source,
A described standard module offers each standard module of Multi-Mode Base Station with described external timing signal, comprises as the internal clocking reference signal of each standard module:
Clock Card in the described standard module exports the BITS clock signal to Multi-Mode Base Station clock internal bus;
The master clock unit of each standard module obtains described BITS clock signal from described clock bus respectively, as the internal clocking reference signal of each standard module.
4. according to the described method of claim 1, it is characterized in that, when external clock reference is global position system GPS clock source,
A described standard module offers each standard module of Multi-Mode Base Station with described external timing signal, comprises as the internal clocking reference signal of each standard module:
Clock Card in the described standard module exports the 1pps signal in the gps clock signal to Multi-Mode Base Station clock internal bus; And the master clock unit in the described standard module sends to this absolute time signal the master clock unit of other standard module from described Clock Card extraction absolute time signal;
The master clock unit of each standard module obtains described 1pps signal from described clock bus respectively, with described 1pps signal and the described absolute time signal internal clocking reference signal as each standard module.
5. according to the described method of claim 4, it is characterized in that the described master clock unit that this absolute time signal is sent to other standard module comprises:
This absolute time signal is sent to the master clock unit of other standard module by BURST message.
6. a Multi-Mode Base Station obtains the method for external timing signal, it is characterized in that described method comprises:
A common clock unit in the Multi-Mode Base Station obtains external timing signal from external clock reference;
Described common clock unit offers each standard module of Multi-Mode Base Station with described external timing signal, as the internal clocking reference signal of each standard module.
7. according to the described method of claim 6, it is characterized in that described common clock unit offers each standard module of Multi-Mode Base Station with described external timing signal, comprise as the internal clocking reference signal of each standard module:
Described common clock unit exports E1/T1 line clock or FE/GE line clock or building integrated timing supply BITS clock signal to Multi-Mode Base Station clock internal bus;
The master clock unit of each standard module obtains described E1/T1 line clock or FE/GE line clock or BITS clock signal from described clock bus respectively, as the internal clocking reference signal of each standard module.
8. according to the described method of claim 6, it is characterized in that described common clock unit offers each standard module of Multi-Mode Base Station with described external timing signal, comprise as the internal clocking reference signal of each standard module:
Described common clock unit exports the 1pps signal in the gps clock signal to Multi-Mode Base Station clock internal bus; And the master clock unit of a standard module sends to the absolute time signal master clock unit of other standard module outside the described standard module from common clock unit extraction absolute time signal;
The master clock unit of each standard module obtains described 1pps signal from described clock bus respectively, with described 1pps signal and the described absolute time signal internal clocking reference signal as each standard module.
9. described according to Claim 8 method is characterized in that, the described master clock unit that this absolute time signal is sent to other standard module comprises:
This absolute time signal is sent to the master clock unit of other standard module by BURST message.
10. Multi-Mode Base Station; it is characterized in that; comprise: a plurality of different systems modules; one of them standard module is used for obtaining external timing signal from external clock reference; and described external timing signal offered each standard module in the Multi-Mode Base Station, as the internal clocking reference signal of described each standard module.
11., it is characterized in that a described standard module comprises clock signal output unit and master clock unit according to the described Multi-Mode Base Station of claim 10, other any the standard module outside the described standard module includes the master clock unit;
The clock signal output unit of a described standard module, be used for obtaining BITS clock signal or E1/T1 line clock or FE/GE line clock, export BITS clock signal or E1/T1 line clock or FE/GE line clock to Multi-Mode Base Station clock internal bus from external clock reference;
The master clock unit of described each standard module is used for obtaining BITS clock signal or E1/T1 line clock or FE/GE line clock from described clock bus, as the internal clocking reference signal of this standard module.
12., it is characterized in that a described standard module comprises Clock Card and master clock unit according to the described Multi-Mode Base Station of claim 10, other any the standard module outside the described standard module includes the master clock unit;
The Clock Card of a described standard module is used for obtaining the gps clock signal from external clock reference, exports the 1pps signal in the gps clock signal to Multi-Mode Base Station clock internal bus;
The master clock unit of a described standard module, be used for obtaining described absolute time signal from described Clock Card, obtain described 1pps signal from described clock bus, with described 1pps signal and described absolute time signal internal clocking reference signal as a described standard module; And the master clock unit that this absolute time signal is sent to other standard module;
The master clock unit of described other standard module, be used for obtaining described 1pps signal from described clock bus, receive the absolute time signal from the master clock unit of a described standard module, with described 1pps signal and described absolute time signal as the internal clocking reference signal.
13. according to claim 11 or 12 described Multi-Mode Base Station, it is characterized in that described Multi-Mode Base Station also comprises negotiation element, be used to consult the corresponding relation between each standard module and described clock bus; Then
Described clock signal output unit or Clock Card specifically are used for: obtain external timing signal from the external clock reference of this standard block configuration, with the described corresponding relation that described external timing signal is determined according to described negotiation element, export corresponding clock bus to;
Described master clock unit specifically is used for: the described corresponding relation of determining according to described negotiation element, obtain external timing signal from the clock bus of correspondence, with the external timing signal that the obtained internal clocking reference signal as this standard module.
14. Multi-Mode Base Station; it is characterized in that; comprise: common clock unit and a plurality of different systems module; wherein the common clock unit is used for obtaining external timing signal from external clock reference; and described external timing signal offered each standard module in the Multi-Mode Base Station, as the internal clocking reference signal of described each standard module.
15. according to the described Multi-Mode Base Station of claim 14, it is characterized in that, described common clock unit is used for obtaining BITS clock signal or E1/T1 line clock or FE/GE line clock from external clock reference, exports BITS clock signal or E1/T1 line clock or FE/GE line clock to Multi-Mode Base Station clock internal bus;
The master clock unit of described each standard module is used for obtaining BITS clock signal or E1/T1 line clock or FE/GE line clock from described clock bus, as the internal clocking reference signal of this standard module.
16., it is characterized in that described common clock unit is used for obtaining the gps clock signal from external clock reference according to the described Multi-Mode Base Station of claim 14, export the 1pps signal in the gps clock signal to Multi-Mode Base Station clock internal bus;
Master clock unit in one of them standard module is used for extracting the absolute time signal from described common clock unit, this absolute time signal is sent to the master clock unit of other standard module; And with described 1pps signal and described absolute time signal internal clocking reference signal as a described standard module;
Master clock unit in described other standard module, be used for obtaining described 1pps signal from described clock bus, and the master clock unit from a described standard module receives the absolute time signal, with described 1pps signal and described absolute time signal as the internal clocking reference signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101446505A CN102215559A (en) | 2010-04-09 | 2010-04-09 | Method for obtaining external clock signal by multimode base station and multimode base station |
| PCT/CN2011/072561 WO2011124155A1 (en) | 2010-04-09 | 2011-04-09 | Multi-mode base station and method for multi-mode base station acquiring an external clock signal |
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| CN2010101446505A CN102215559A (en) | 2010-04-09 | 2010-04-09 | Method for obtaining external clock signal by multimode base station and multimode base station |
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| WO2011124155A1 (en) | 2011-10-13 |
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