CN204795631U - EBBU baseband processing unit based on 230MHz - Google Patents
EBBU baseband processing unit based on 230MHz Download PDFInfo
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Abstract
The utility model provides a EBBU baseband processing unit based on 230MHz, it includes the quick -witted case of compriseing frame and frame backplate, quick -witted incasement includes: main control board, channel processing board, environment timing clock interface board, power source board, fan interface board, fan and test keysets, channel processing board is connected with the main control board, and channel processing board passes through the ir interface and links to each other with eRRU, the fan passes through the connector to be connected with the fan interface board, and rethread fan interface board is connected to on the frame backplate. The utility model discloses accomplish baseband signal's processing, clock and monitoring function, realize simultaneously S1 interface, ir interface, power source, this locality maintain interface, environmental monitoring interface and with outdoor GPS antennal interface. The utility model discloses an external control of reporting an emergency and asking for help or increased vigilance the case and realizing the environment, its function supports multiple electric power such as data acquisition, load control, video transmission professional, the unit cabinet can be supported can provide low -cost, the wide networking solution that covers for electric power industry by 6 years fans.
Description
Technical field
The utility model relates to electric power wireless communication field, is specifically related to a kind of eBBU baseband processing unit based on 230MHz.
Background technology
In the adapted electric automation system Construction of China, the modes such as main employing optical fiber, wireless, medium-voltage carrier, result of use is uneven, owing to lacking the more applicable communication technology in power private network application, various places mainly select 230MHz wireless private network channel to realize specially becoming data acquisition and the spatial load forecasting of user, have small investment, construction period short, safeguard the advantages such as simple, be applicable to very much the power distribution network being applied to communication node dispersion, used with monitoring as the information gathering of electric power large-scale special change user power utilization by most Utilities Electric Co. at present.Also there is the shortcomings such as some such as transmission rates are low, poor real, managerial ability are poor, power system capacity is little, networking capability is weak in 230MHz wireless private network, constrains development and the application of this technology to a great extent.
EBBU (BaseBandUnit) 230 product is the eNodeB230 distributed base station Base Band Unit equipment according to the independent research of broadband wireless access communication system using multi agreement, hereinafter referred to as eBBU; ERRU product is eNodeB230 distributed base station RF remote equipment.Wherein eRRU is connected with eBBU by Ir interface, and eBBU and eRRU jointly coordinates and realizes a complete eNodeB logic function.EBBU230 product and eRRU230 equipment cooperating.EBBU and eRRU is by Fiber connection, and networking flexibility, can provide low cost, the wide networking solution covered for operator.
This system adopts distributed base station, BBU and RRU is two independent individuals, and its research and development manufacturing cost is higher, and BBU and RRU volume is comparatively large, and installation and deployment are dumb, and it is high to consume energy, and construction cost is high, and application is limited.
Summary of the invention
The purpose of this utility model is to provide a kind of eBBU baseband processing unit of integration, is applied to 230MHz electric power wireless communication system.
According to the technical scheme that the utility model provides, the described eBBU baseband processing unit based on 230MHz comprises the cabinet be made up of machine frame and subrack backboard, include in cabinet: master control borad, Channel Processing plate, environment timer clock interface board, power interface plate, fan interface board, fan and test adaptor plate, described master control borad, environment timer clock interface board, power interface plate, test adaptor plate are all connected to case back plate; Channel Processing plate is connected with master control borad, and Channel Processing plate is connected with eRRU by Ir interface; Fan is connected with fan interface board by connector, then is connected on subrack backboard by fan interface board;
Described Channel Processing plate realizes air interface physical layer data processing and controlling functions thereof, transmitted in both directions signaling data, business datum, Operation and Maintenance information between Channel Processing plate and master control borad, and clock signal of system is supplied to Channel Processing plate by master control borad; Transmitted in both directions I/Q data between Channel Processing plate and master control borad, realizes baseband pool resource-sharing;
Described master control borad provides control, management and the function of exchange of data service, also for Base-Band Processing, Operation and Maintenance provide timing, system time and system works clock for eNodeB;
Described environment timer clock interface board completes environmental monitoring interface, alarm box interface, GPS module interface function, carries out route protection to the external interface of this plate simultaneously;
Described test adaptor plate provides debug serial port for each board, and wherein every block master control borad has 1 debug serial port, every block Channel Processing plate has 1 debug serial port, and the debug serial port of each board is led to cabinet panel by jumper cap by test adaptor plate;
Described power interface plate is respectively each active board and fan is powered.
Further, described Channel Processing intralamellar part comprises: Switching Module, signaling processing module, business data processing module, baseband processing module, I/Q data processing module, clock module and extended operation maintenance module, wherein baseband processing module is connected with Switching Module, I/Q data processing module respectively, and Switching Module is connected with business data processing module, signaling processing module respectively;
Described Switching Module is connected with master control borad, realizes the packet-switching between master control borad and channel board, comprises business, signaling and Operation and Maintenance information, both supports Ethernet exchanging, also supports that RapidIO exchanges;
Described signaling processing module is used for veneer management and the signaling process of channel board;
Described business data processing module is used for upper strata, comprises the process of the business datum of PDCP, MAC and RLC;
Described baseband processing module is for realizing the physical layer process of baseband signal;
Described I/Q data processing module is connected with master control borad, realizes base-band resource and shares; Complete I/Q data and operation maintenance data in addition to the encapsulation of Ir interface protocol, be connected with eRRU by Ir interface;
Described clock module is connected with master control borad, and the system clock utilizing master control borad to provide and PP2S complete timing signals all on channel board;
Described extended operation maintenance module is connected with master control borad, the relevant information of memory channel disposable plates.
Further, described master control borad inside comprises: main processor modules, Switching Module, clock module and primary processor subboard port module, described main processor modules connects clock module and Switching Module respectively, main processor modules, Switching Module, clock module all connect primary processor subboard port module, and Switching Module, clock module all connect subrack backboard;
Described main processor modules is for completing the dissection process of the signaling from AIBc plate, and the control and management to whole eNodeB;
Described Switching Module is used for the exchange of business datum, provides the passage of signaling and Operation and Maintenance information simultaneously, and completes the exchange of I/Q data;
Described clock module selects timing reference input according to configuration, for generation of the system clock synchronous with external reference with distribution and idol signal second;
Described primary processor subboard port module is for providing the interface with AIBc plate.
Described environment timer clock interface board comprises clock cascade module, alarm box control interface module, gps clock access interface module and dry contact interface module, and clock access is GPS access way.
Described master control borad provides adaptive ethernet link and SRIO link, in this, as the transmission channel of business datum, signaling and Operation and Maintenance information for other veneers.
The utility model has the advantages that: the utility model completes the process of baseband signal, clock and monitoring function, realize simultaneously S1 interface, Ir interface, power interface, local maintenance interface, environmental monitoring interface and with outdoor gps antenna interface.The utility model adopts external alarm box to realize the monitoring of environment, the multiple power businesses such as its collection of function supported data, spatial load forecasting, transmission of video, Single Cabinet is maximum supports 6 contained fans, can provide low cost, the wide networking solution covered for power industry.Baseband processing unit has the features such as framework advanced person, reliability are high, easy for installation, is applicable to extensively covering city, rural area.
Accompanying drawing explanation
Fig. 1 is the utility model circuit structure block diagram.
Fig. 2 is Channel Processing plate logic diagram.
Fig. 3 is master control borad logic diagram.
Fig. 4 is environment timer clock interface board logic diagram.
Fig. 5 is power interface plate logic diagram.
Fig. 6 is test adaptor plate circuit board jumper plug schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
The utility model is by machine frame, master control borad eMCB (maincontrolpanel), Channel Processing plate CPB (channelprocessingpanel), environment timer clock interface board TEMB (TimeandEnvironmentMaintenanceBoard), power interface plate PWIB (PowerInterfaceBoard), fan interface board FIB (FanInterfaceBoard), test adaptor plate TTIB (TransmissionTimeIntervalBoard), subrack backboard BCBP (BBUCommonBackPlane) forms.As shown in Figure 1, described master control borad, environment timer clock interface board, power interface plate, test adaptor plate are all connected to case back plate; Channel Processing plate is connected with master control borad, and Channel Processing plate is connected with eRRU by Ir interface; Fan is connected with fan interface board by connector, then is connected on subrack backboard by fan interface board.Below be introduced respectively.
1, machine frame.
Whole machine frame is mainly divided into 4 parts, and the left side is blower module; The region of middle main plate is followed successively by CPB0 from top to bottom, and CPB1, CPB2, CPB3, CPB4, CPB5 are 6 blocks of Channel Processing plate plates, and MCB0, MCB1 are two blocks of master control borad plates.The right side of main plate is little board region, is 1 piece of TEMB and 1 piece PWIB from top to bottom.The rightmost side is Air Filter.Machine frame is full sheet metal structural, is connected between each sheet metal component by riveted joint or screw, and realizes overlap joint shielding; Guide rail uses mould straight forming, and whole machine frame supports 19 " standard cabinet installation.
2, subrack backboard BCBP.
BCBP is BBU subrack backboard, is mainly board and module provides position to fix, and board is powered and between board, signal connects.The board (module) supported comprises 2 pieces of MCB, 6 pieces of CPB, 1 piece of PWIB, 1 piece of TEMB1,1 piece of TTIB and 1 blower module.
3, fan.
Fan is positioned at the left side of BBU cabinet, employing be aerofoil fan.Cabinet employs double fan, improves the reliability of cooling system.Fan is connected with fan interface board FIB by connector, and FIB plate mainly completes fan and powers, by functions such as fan power supply and system power supply Isolations.FIB, between fan and subrack backboard BCBP, plays connection fan and subrack backboard.When cabinet does wall hanging installation, air channel is air-out form on lower air intake.When cabinet is arranged on 19 " in rack time, air channel is the exhausting form of the left air-out of right air intake.
4, Channel Processing plate CPB.
Channel Processing plate realizes air interface physical layer data processing function and controlling functions thereof.Channel Processing plate and have interface relationship between master control borad eMCB, eRRU.The signal transmitted between Channel Processing plate and master control borad has: signaling data, business datum, Operation and Maintenance OM (Operation & Maintenance) information, clock signal of system.
As shown in Figure 1: clock signal of system is supplied to Channel Processing plate by master control borad; Transmitted in both directions business, signaling and OM information between Channel Processing plate and master control borad; Transmitted in both directions I/Q data between Channel Processing plate and master control borad, realizes baseband pool resource-sharing; Transmit IQ (In-phaseQuadrature) data and OM message between Channel Processing plate and eRRU, realize Ir (InterfacebetweentheRRUandtheBBU) interface.
As shown in Figure 2, the main modular of Channel Processing intralamellar part comprises: Switching Module, signaling processing module, business data processing module, baseband processing module, I/Q data processing module, clock module and extended operation maintenance module, wherein baseband processing module is connected with Switching Module, I/Q data processing module respectively, and Switching Module is connected with business data processing module, signaling processing module respectively.
Switching Module realizes the packet-switching between master control borad and channel board, comprises business, signaling and OM information, both supports Ethernet exchanging, also supports that RapidIO exchanges;
Signaling processing module is used for veneer management and the signaling process of channel board;
Business data processing module is used for upper strata as the process of the business datum of PDCP (PacketDataConvergenceProtocol), MAC (MediaAccessControl) and RLC (RadioLinkControl);
Baseband processing module is for realizing the physical layer process of baseband signal;
I/Q data processing module is connected with master control borad by IQ_LINK interface, realizes base-band resource and shares; Complete I/Q data and OM data in addition to the encapsulation of Ir interface protocol, be connected with eRRU by Ir interface;
The system clock that clock module utilizes master control borad to provide and PP2S (Pulsepertwosecond), complete timing signals all on channel board;
The relevant information (as temperature) of extended operation maintenance module memory channel disposable plates.
CPB panel there are 3 optical interfaces, indicator light and reset button.The implication of indicator light asks for an interview table 1.Press reset button RST to CPB sheet reset.
Table 1CPB front panel indicator light implication
Technical indicator
Veneer capacity: support 2 8.5MHz communities.
5, master control borad eMCB.
Master control borad eMCB provides control, management and the function of exchange of data service, also for Base-Band Processing, Operation and Maintenance provide timing, system time and system works clock for eNodeB.
Master control borad for other veneers provide the system clock of timing and synchronous even second signal.
Master control borad provides adaptive ethernet link and SRIO (SerialRapidIOSwitch) link, in this, as the transmission channel of business datum, signaling and OM information for other veneers.
The Switching Module of master control borad realizes the exchange of business datum.Main processor modules on master control borad resolves the signaling from AIBc plate, and sends relevant control signaling to Channel Processing plate, and is responsible for carrying out Operation and Maintenance to other veneers.Switching Module supports that gigabit Ethernet exchanges, SRIO exchanges, I/Q data exchanges.
As shown in Figure 3: the functional module of master control borad comprises: main processor modules, Switching Module, clock module and primary processor subboard port module, described main processor modules connects clock module and Switching Module respectively, main processor modules, Switching Module, clock module all connect primary processor subboard port module, and Switching Module, clock module all connect subrack backboard.
Main processor modules is for completing the dissection process of signaling, and the control and management to whole eNodeB.
Switching Module is used for the exchange of business datum, provides the passage of signaling and OM information simultaneously, and completes the exchange of I/Q data.
Clock module selects timing reference input according to configuration, for generation of the system clock synchronous with external reference with distribution and idol signal second.
EMCB subboard port module: the interface with AIBc plate is provided.
EMCB panel has 2 optical fiber interfaces, 1 Ethernet interface, 2 clock interfaces and reset button, pressing reset button RST can to other board resetting.The implication of indicator light asks for an interview table 2.
Table 2eMCB front panel indicator light implication
Each interface specification is as follows:
2 photoelectricity alternative interface OFP0 and OFP1 (GE interface) are namely S1 physical interfaces.S1 interface rate reaches as high as 1Gbps.
1 Ethernet interface ETH, for local operation maintenance interface.
2 clock interface: 10MHZ and PP2S are for testing the interface provided
1 reset button RST, pressing reset button can reset to other veneer.
Technical indicator
10M clock frequency accuracy;
At a lock condition: 10M clock frequency accuracy < ± 1 × 10
-10;
Under losing lock condition: 10M clock frequency accuracy < ± 1 × 10
-9.
6, environment timer clock interface board TEMB.
Environment timer clock interface board has realized environmental monitoring interface, alarm box interface, GPS module interface function, carries out route protection to the external interface of this plate simultaneously.
As shown in Figure 4, TEMB mainly comprises clock cascade module, alarm box control interface module, gps clock access interface module and dry contact interface module.Gps clock access interface module receives gps antenna signal, output clock synchronizing signal; Clock cascade module receives from the clock cascade signal of RJ45 interface and the clock sync signal of gps clock access interface module, output clock cascade signal; Dry contact interface module receives dry contact signal, exports I
2c bus signals; The input of alarm box control interface module from the signal of external alarm box, and to the output processed alarm box signal of subrack backboard.
Clock access is GPS access way.In clock cascade module, the function of gps satellite receiver has: provide base station system the synchronous required time; Geographical location information is provided, comprises longitude and latitude, height etc.; As the normal steady reference source of clock.
On TEMB panel, each interface specification is as follows:
ANT:GPS clock access interface.
RSV: spare interface, does not use at present.
Dry.N: dry contact.Dry contact is used for monitoring of environmental information (using when needing the environmental information of monitoring few).
Env.I: environment alarm box interface.For monitoring of environmental information.
Ref.I: cascade clock TOD (TimeofDate) input.Outside clock source can be connect, main access be the information of PP1S and TOD, the clock signal of TEMB output multi-channel PP1S and TOD, for this eBBU, now no longer needs use GPS.
Ref.O: cascade clock TOD exports.Can external output clock information (PP1S and TOD information), for other eBBU.
7, power interface plate PWIB.
PWIB is the power import of system, the functions such as the instruction of completion system upper electrical switch, power supply status, power protection, power filter and power distribution.PWIB is respectively the active board of BBU and fan is powered.Input voltage Shi – 48VDC, output is 2 tunnel-48VDC.Power supply turns DC by NodeB indoor equipment electrical power distribution module or 220VAC to be provided, and is sent to BBU by service cable.System works on power under front panel switch controls.
As shown in Figure 5: PWIB comprises SPD, EMI filter circuit and power distribution three zones.SPD function is realized by power supply special nonlinear protection device, and in order to prevent the surge of power circuit from invading, the maximum surge current of permission is 10kA (8/20 μ s).EMI filter circuit suppresses conduction interference and the radiation disturbance of power line, improves the Main Means of its immunity to interference, the low pass filter that EMI power filter is made up of the passive device such as inductance, electric capacity.
8, test adaptor plate TTIB.
Test adaptor plate TTIB provide debug serial port for each board, is positioned at the upper right side of machine frame.As shown in Figure 6, TTIB provides 8 RS232 serial line interfaces (every block MCB plate has 1 debug serial port, often block CPB plate to have 1 debug serial port) altogether, and the debug serial port of each board is led to front panel by TTIB plate.Such as on TTIB circuit board, jumper cap is plugged in CPB1 silk-screen position, then the RS232 interface on TTIB plate is exactly the debug serial port of CPB1 plate.Other serial ports of a board use after the same method.
Claims (5)
1. based on the eBBU baseband processing unit of 230MHz, comprise the cabinet be made up of machine frame and subrack backboard, it is characterized in that, include in cabinet: master control borad, Channel Processing plate, environment timer clock interface board, power interface plate, fan interface board, fan and test adaptor plate, described master control borad, environment timer clock interface board, power interface plate, test adaptor plate are all connected to case back plate; Channel Processing plate is connected with master control borad, and Channel Processing plate is connected with eRRU by Ir interface; Fan is connected with fan interface board by connector, then is connected on subrack backboard by fan interface board;
Described Channel Processing plate realizes air interface physical layer data processing and controlling functions thereof, transmitted in both directions signaling data, business datum, Operation and Maintenance information between Channel Processing plate and master control borad, and clock signal of system is supplied to Channel Processing plate by master control borad; Transmitted in both directions I/Q data between Channel Processing plate and master control borad, realizes baseband pool resource-sharing;
Described master control borad provides control, management and the function of exchange of data service, also for Base-Band Processing, Operation and Maintenance provide timing, system time and system works clock for eNodeB;
Described environment timer clock interface board completes environmental monitoring interface, alarm box interface, GPS module interface function, carries out route protection to the external interface of this plate simultaneously;
Described test adaptor plate provides debug serial port for each board, and wherein every block master control borad has 1 debug serial port, every block Channel Processing plate has 1 debug serial port, and the debug serial port of each board is led to cabinet panel by jumper cap by test adaptor plate;
Described power interface plate is respectively each active board and fan is powered.
2. as claimed in claim 1 based on the eBBU baseband processing unit of 230MHz, it is characterized in that, described Channel Processing intralamellar part comprises: Switching Module, signaling processing module, business data processing module, baseband processing module, I/Q data processing module, clock module and extended operation maintenance module, wherein baseband processing module is connected with Switching Module, I/Q data processing module respectively, and Switching Module is connected with business data processing module, signaling processing module respectively;
Described Switching Module is connected with master control borad, realizes the packet-switching between master control borad and channel board, comprises business, signaling and Operation and Maintenance information, both supports Ethernet exchanging, also supports that RapidIO exchanges;
Described signaling processing module is used for veneer management and the signaling process of channel board;
Described business data processing module is used for upper strata, comprises the process of the business datum of PDCP, MAC and RLC;
Described baseband processing module is for realizing the physical layer process of baseband signal;
Described I/Q data processing module is connected with master control borad, realizes base-band resource and shares; Complete I/Q data and operation maintenance data in addition to the encapsulation of Ir interface protocol, be connected with eRRU by Ir interface;
Described clock module is connected with master control borad, and the system clock utilizing master control borad to provide and PP2S complete timing signals all on channel board;
Described extended operation maintenance module is connected with master control borad, the relevant information of memory channel disposable plates.
3. as claimed in claim 1 based on the eBBU baseband processing unit of 230MHz, it is characterized in that, described master control borad inside comprises: main processor modules, Switching Module, clock module and primary processor subboard port module, described main processor modules connects clock module and Switching Module respectively, main processor modules, Switching Module, clock module all connect primary processor subboard port module, and Switching Module, clock module all connect subrack backboard;
Described main processor modules is for completing the dissection process of the signaling from AIBc plate, and the control and management to whole eNodeB;
Described Switching Module is used for the exchange of business datum, provides the passage of signaling and Operation and Maintenance information simultaneously, and completes the exchange of I/Q data;
Described clock module selects timing reference input according to configuration, for generation of the system clock synchronous with external reference with distribution and idol signal second;
Described primary processor subboard port module is for providing the interface with AIBc plate.
4. as claimed in claim 1 based on the eBBU baseband processing unit of 230MHz, it is characterized in that, described environment timer clock interface board comprises clock cascade module, alarm box control interface module, gps clock access interface module and dry contact interface module, and clock access is GPS access way.
5. as claimed in claim 1 based on the eBBU baseband processing unit of 230MHz, it is characterized in that, described master control borad provides adaptive ethernet link and SRIO link, in this, as the transmission channel of business datum, signaling and Operation and Maintenance information for other veneers.
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