CN101325753A - Baseband apparatus of WCDMA mobile communication system base station - Google Patents
Baseband apparatus of WCDMA mobile communication system base station Download PDFInfo
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- CN101325753A CN101325753A CNA2008100743780A CN200810074378A CN101325753A CN 101325753 A CN101325753 A CN 101325753A CN A2008100743780 A CNA2008100743780 A CN A2008100743780A CN 200810074378 A CN200810074378 A CN 200810074378A CN 101325753 A CN101325753 A CN 101325753A
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Abstract
The invention relates to the technical of wideband code division multiple access, discloses a base band device of a wideband code division multiple access mobile communication system base station which causes the WCDMA base band subsystem be able to flexibly crate network, reliably run and smoothly expand, thereby satisfying the need of high capacity multi-service rate. The invention adopts the modular unitized design method to respectively integrate each functional unit and processing source on each veneer to be loaded by physical frame; the amount of the up and down processing veneer is able to be randomly added and subtracted by the frame so as to satisfy the system processing ability upgrading or expansion demand; the frame is symmetrically designed and composed of two independent half-frames as the redundancy; further, the frame is asymmetrically designed by up and down business and realized by veneer in different amounts and different processing ability; and each veneer is realized by adopting modularization.
Description
Technical field
The present invention relates to Wideband CDMA Technology, particularly the base band device of WCDMA mobile communication system base station.
Background technology
Along with the fast development of internet and the increase of various wireless traffic demands, at present based on the wireless communication networks that carries single voice service incompatibility people's needs more and more.With big capacity, High Data Rate and bearing multimedia business is the developing direction that the 3-G (Generation Three mobile communication system) (3rd Generation, be called for short " 3G ") of purpose becomes radio communication.Code division multiple access (Code Division Multiple Access is called for short " CDMA ") technology relies on advantages such as its good noise immunity, confidentiality and low-power to become topmost multiple access technique in the 3G (Third Generation) Moblie.
Compare with traditional cdma system, the maximum characteristics of 3G (Third Generation) Moblie are to support the business of multiple speed, from the speech to the grouped data to multimedia service, and can be according to concrete service needed, necessary bandwidth is provided.Third generation partner program (3rd Generation Partnership Project, abbreviation " 3GPP ") type of service of agreement regulation Wideband Code Division Multiple Access (WCDMA) (Wide Code Division Multiple Access is called for short " WCDMA ") system's support comprises: 5.15Kbps～12.2Kbps voice data, 64Kbps circuit data, 144Kbps grouped data and 384Kbps grouped data.To the Base-Band Processing of different rates business, required memory space, operand and to handle delay difference very big, so hardware configuration and implementation are to solve the efficient of WCDMA system and the key of capacity.
A key character of WCDMA mobile communication system is broadband, big capacity, supports various flexible circuit domain and packet switch domain service etc.Fig. 1 shows the functional block diagram of WCDMA base station apparatus and peripheral system.Wherein by wireless access network and subscriber equipment (User Equipment is called for short " UE ") communication, its interface is called the Uu interface to base station system downwards; Upwards then receive radio network controller the control signaling and the business datum of (RadioNetwork Controller is called for short " RNC "); In addition, base station system inside again can be according to signal flow to being divided into antenna feeder subsystem, Radio Frequency Subsystem, baseband subsystems, transmission subsystem, control subsystem and operation and maintenance sub system successively, wherein Radio Frequency Subsystem is finished the band signal processing, baseband subsystems is finished base band signal process, and transmission subsystem realizes professional high-rise interface to bottom.
As seen base station apparatus mainly is the physical layer function that realizes the WCDMA system, mainly comprises down channel coding and modulation, the up channel despreading, separates and is in harmonious proportion decoding, and radio frequency sends and receiving processing module.The capacity and the traffic profile of the support of WCDMA base station baseband device have determined WCDMA power system capacity and traffic profile to a great extent.For the volume of business growth of requirement, must seek relevant base station device solves scheme.
Simultaneously from the process of current mobile communication business evolution, the construction cost of 3G mobile communications network is high to be a key factor that hinders evolution, so operator claims for the manufacturing cost of 3G equipment.Base band device design requirement for the WCDMA base station is: design cost is low, supports big capacity, supports various flexible circuit domain and packet switch domain service.The research of the flexible WCDMA base station baseband of the big capacity device of a kind of low cost, high reliability is extremely urgent.
The baseband subsystems implementation of present existing WCDMA base station all is that each processing capacity is module integrated on a veneer, such as being made up of sector control unit, spread spectrum receiving element, channel decoding unit, base band transmitting element and core bus of being used to interconnect etc.Though the baseband subsystems veneer of Shi Xianing can be realized the base station baseband processing capacity by certain requirement like this, has a lot of shortcomings and infeasibility.
At first, handle resource and adjust underaction, handle resource, cause the waste or the shortage of resource, can't reach very high resource utilization and Business Processing efficient in case single board design well just can not be adjusted it according to actual demand later on again.
Secondly, system reliability is not high enough, because whole baseband subsystems realizes on a veneer that all wherein any one module goes wrong and all causes the whole system fault.
In addition, network construction cost is higher and cause it infeasible, and the construction of 3G network needs beginning cheaply as previously mentioned, and the prior art scheme does not provide the solution of network smooth expansion, and following volume of business demand will be raised the initial stage construction cost.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of base band device of WCDMA mobile communication system base station, makes the establishment flexibly of WCDMA baseband subsystems, reliability service, smooth expansion, to satisfy the requirement of big capacity multi-service speed.
For achieving the above object, the invention provides a kind of base band device of WCDMA mobile communication system base station, comprise,
The relay process plate is used to realize exchanges data between radio network controller and base station
The downlink processing plate is used to realize the control of down channel coded modulation and power;
Up disposable plates is used to realize up channel search and demodulation, decoding;
The interface disposable plates is used to realize the interface between the baseband subsystems and Radio Frequency Subsystem on the up-downgoing channel;
Master control borad is used for coordinating control and monitors each the veneer collaborative work of described base band device;
Wherein,
At up direction, described interface disposable plates sends to described downlink processing plate from described Radio Frequency Subsystem receiving baseband signal, is transmitted to described up disposable plates by it and handles, and after the processing data is sent to the relay process plate;
At down direction, described downlink processing plate receives data and handles from described relay process plate interface, sends to described interface disposable plates after the processing, sends to described Radio Frequency Subsystem by it.
Wherein, the capacity of its physics framework is at least one block of described downlink processing plate, at least one described up disposable plates, at least one described interface disposable plates or at least one described master control borad;
According to demand and cost, the piece number of determining described downlink processing plate, up disposable plates, interface disposable plates or master control borad be one to any piece number between the capacity of described physics framework.
In addition, if there are at least two in described downlink processing plate, up disposable plates, interface disposable plates or master control borad, then wherein at least one main board and at least one standby plate, described standby plate replaces its work as the redundancy backup of described main board when described main board breaks down.
In addition, described physics framework comprises at least two symmetrical and independent subframes, can distinguish the independent function that realizes described base band device.
In addition, the piece number of described up disposable plates is more than the piece number of described downlink processing plate; The disposal ability of every block of described downlink processing plate is higher than the disposal ability of every described up disposable plates; The disposal ability of the dedicated IC chip that every block of described downlink processing plate is comprised is higher than the disposal ability of the dedicated IC chip that described up disposable plates comprises.
In addition, described up disposable plates receives the upstream digital baseband signal from described downlink processing plate, respectively special uplink channel and up access channel are searched for and the demodulation coding processing, and the data after will handling is delivered to described relay process plate;
Described up disposable plates produces the power control data, catches designation data, and delivers to described downlink processing plate;
Described up disposable plates receives control and clock signal from described master control borad, and to its uploaded state.
In addition, described up disposable plates comprises:
Up disposable plates control module is used to realize cell configuration, uplink channel resources management, and the upload control face is handled and transmission, and the maintenance management of described up disposable plates;
Demodulation/access module is used to realize that dedicated channel is separated is in harmonious proportion the Reverse Access Channel demodulation;
Decoding module is used to realize the channel decoding processing;
Up disposable plates interface module is used to realize the conversion and the transmitting-receiving of upstream data, power control data.
In addition, described downlink processing plate receives the upstream digital baseband signal from described interface disposable plates, and is transmitted to up disposable plates;
Described downlink processing plate receives data and carries out the down channel processing from described relay process plate interface, is sent to the interface disposable plates then;
Described downlink processing plate receives control and clock signal from described master control borad, and to its uploaded state.
In addition, described downlink processing plate comprises:
Downlink processing plate control module is used to realize cell configuration management, chain of command processing and data statistics, and the maintenance management of described downlink processing plate;
Code modulation module is used to realize coding and modulation to downlink data;
Downlink processing plate interface module is used to realize the conversion and the transmitting-receiving of upstream data, downlink data, power control data.
In addition, described downlink processing plate under the mode of working alone, every described downlink processing plate self-contained processing section cell channel;
Active and standby part of working method, a part of described downlink processing plate is handled all cell channels, and all the other described downlink processing plates are as redundancy backup;
In the load sharing mode, all described downlink processing plates are handled all cell channels jointly.
In addition, described interface disposable plates receives descending digital baseband signal from described downlink processing plate, by main diversity correspondence, is distributed to each radio-frequency receiving-transmitting plate of described Radio Frequency Subsystem;
Described interface disposable plates receives the upstream digital baseband signal from described radio-frequency receiving-transmitting plate, and is transmitted to described downlink processing plate;
Described interface disposable plates receives control and clock signal from described master control borad, and to its uploaded state.
In addition, described interface disposable plates comprises,
Interface disposable plates control module is used to realize and the information interaction of described radio-frequency receiving-transmitting plate, reaches the maintenance management of described interface disposable plates;
Multicarrier associating slicing module is used to realize downlink double/multi-load ripple master diversity associating slicing function and data forwarding functional verification;
Interface is handled the plate interface module, be used to realize and described radio-frequency receiving-transmitting plate and downlink processing plate between coffret function and slicing bypass functionality.
By relatively finding, the main distinction of technical scheme of the present invention and prior art is, adopted the modular combination method for designing, each functional unit and processing resource are incorporated into respectively on each veneer, and it is unified by the physics framework for carrying, the number that veneer is handled in up-downgoing can subtract by adding arbitrarily on the framework, to satisfy system processing power upgrading and dilatation demand;
Framework has adopted symmetric design, is made up of two independence half frames, and capacity extensions is a times of single half frame.；
Also adopted the professional asymmetric design of up-downgoing, realized by the veneer of different numbers and different disposal ability respectively;
Also adopt modular implementation for each veneer.
Difference on this technical scheme, brought comparatively significantly beneficial effect, be that modularized design has realized setting up flexibly scheme, the initial stage user can adopt minimal configuration, to reduce initial stage networking cost, the back is added corresponding module and is got final product smooth expansion according to the extension of network needs, greatly reduce system's initial stage construction cost, improved feasibility;
The professional asymmetric design of up-downgoing, it is more reasonable to make that business processing resources distributes, and improves system handles efficient, satisfies the demand of big capacity multi-service speed;
The modular implementation of each veneer has reduced implementation complexity, has improved design efficiency.
Description of drawings
Fig. 1 is a WCDMA base station system schematic diagram;
Fig. 2 is the physics framework schematic diagram of base band device according to a second embodiment of the present invention;
Fig. 3 is operational environment and the composition module diagram of the NULP of a fourth embodiment in accordance with the invention;
Fig. 4 is the operational environment of NDLP according to a fifth embodiment of the invention and forms module diagram;
Fig. 5 is the operational environment of interface disposable plates according to a sixth embodiment of the invention and forms module diagram.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
The present invention has adopted modularized design, each functional unit and processing resource are incorporated into respectively on each veneer, and unified by the physics framework for carrying, the number that veneer is handled in up-downgoing can subtract by adding arbitrarily on the framework, to satisfy system processing power upgrading and dilatation demand.So not only can improve system flexibility, and provide the solution of system's smooth expansion.
In order to improve the reliability of WCDMA base station system, also need to provide the error protection solution, the present invention provides the symmetric design of physics framework on the basis of modularized design, with the multiplication of two and half frame realization capacity or the redundancy backup function of symmetry.
Consider the asymmetry of WCDMA wireless network up-downgoing volume of business and demand, the design of employing up-downgoing asymmetry is handled for uplink service, adopts the polylith veneer to realize, the number of channel of every veneer processing is less, and is then opposite for downlink business.So just make that the system handles resource allocation is more reasonable.
For the veneer of several realization key functions, the present invention gives its modular implementation scheme, reduces implementation complexity, improves design efficiency.
In the first embodiment of the present invention, the base band device of WCDMA system base-station is realized that by modularized design it is made of four modules substantially: downlink processing plate (NDLP) is used to realize the control of down channel coded modulation and power; Up disposable plates (NULP) is used to realize up channel search and demodulation, decoding; Interface disposable plates (NIFP) is used to realize the interface between the baseband subsystems and Radio Frequency Subsystem on the up-downgoing channel; Master control borad (NMPT) is used for coordinating control and monitors each the veneer collaborative work of described base band device.
In addition, in order to realize the integral baseband processing capacity, also need to be used to realize monitor board (NMON) to the system monitoring function, be used to support the relay process plate (NDTI) of E1/T1 LI(link interface) processing on the Iub interface, be used to support the Optical Fiber Interface Board (NAOI) of STM1 optical interface of the asynchronous transmission system (Asynchronous Transfer Mode, be called for short " ATM ") of Iub.
The baseband subsystems major function comprises the physical layer process process of descending transmission, up reception and the closed-loop process process of physical layer, and above-mentioned each functional module collaborative work realizes these functions, and NDLP, NULP realize the up-downgoing Channel Processing under NMPT control; The interface disposable plates is then finished the interface of Radio Frequency Subsystem to baseband subsystems, and in the Radio Frequency Subsystem side, it links to each other with radio-frequency receiving-transmitting plate (NTRX), and it links to each other with NDLP in the baseband subsystems side, and for the uplink baseband signal, then is transmitted to NULP by NDLP.
At up direction, reception is from the uplink baseband data of this rack Radio Frequency Subsystem, reach by the interface disposable plates from the Radio Frequency Subsystem receiving baseband signal, send to NDLP then earlier, being transmitted to NULP by it again handles, finish demodulation, decode procedure, after the processing data are sent to transmission subsystem with frame-forming protocol (Framing Protocol is called for short " FP ") packet form.At down direction, NDLP receives data and handles from the relaying disposable plates, sends to the interface disposable plates after the processing, by it to Radio Frequency Subsystem.Receive the FP bag from transmission subsystem, carry out chnnel coding, forward direction modulation, power control etc.
In physics realization, the base band device of WCDMA base station provides a plurality of slots by the physics framework, is used to carry the veneer of each module.Provide a plurality of grooves position, and the also support groove position expansion of this physics framework, promptly the user can be as required and the compromise consideration of cost, determines to stick with several grooves position, so not only can realize handling the flexible adjustment of resource, can also provide the capacity extensions scheme.Particularly NDLP, NULP, interface disposable plates or NMPT all can determine its actual needs piece number with cost according to demand.
As seen adopt modularized design to realize setting up flexibly scheme, the initial stage user can adopt minimal configuration, and promptly baseband subsystems only needs to use: 1 NDLP, 1 NULP and 1 interface disposable plates, add 1 public master control borad NMPT, 1 relay plate NDTI and 1 monitor board NMON.To reduce initial stage networking cost, the back is added corresponding module (NDLP veneer and NULP veneer) and is got final product smooth expansion according to the extension of network needs.Thereby solved the first current cost problem that 3G network is built.
The second embodiment of the present invention is utilized the feature of foregoing polylith expandable board on the basis of first embodiment, realized that the polylith veneer backs up mutually.Design polylith NDLP, NULP, interface disposable plates, NMPT wherein have main board and standby plate in the base band device of WCDMA base station, and standby plate replaces its work as the redundancy backup of main board when main board breaks down.
In addition, the groove position design on the physics framework also needs reasonable contemplation, and among second embodiment, the physics framework is made of two symmetrical and independent subframes, can distinguish the independent function that realizes described base band device, and the groove position on each subframe distributes symmetrically.When real work, can be with one of them framework as standby subframe.
Fig. 2 shows the groove position distribution design of physics framework in the second embodiment of the present invention.Therefore wherein consider the interface disposable plates and for Radio Frequency Subsystem is corresponding, with its both sides of design in the radio frequency frame.Base band then can obviously be divided into two sub-frames, is left half frame from the 1-11 groove promptly, and the 12-22 groove is right half frame, and each half frame comprises 8 NULP, 2 NDLP, 1 NMPT, and the 23-25 groove is placed NDTI, NAOI, NMON respectively in addition.Half frame respectively is an independently baseband processing resource pond about base band frame, with regard to half frame, and 8 NULP, 2 NDLP, maximum 6 sectors of supporting, actual needs 6 NULP in work, and other 2 NULP reserve as single board backup.
The 1st, No. 20 grooves in radio frequency frame both sides are the interface disposable plates, and middle then is the veneer of Radio Frequency Subsystem, NTRX that has addressed before comprising and duplexing low noise amplifier (NDDL).Here NTRX is used to realize the variation of descending if-to-rf signal, amplification, gain controlling; Up radiofrequency signal amplification, filtering, radio frequency are to medium-frequency transformation.NDDL is used to realize up-downgoing radio frequency duplex and low noise amplifier.
As seen, the present invention has realized low-cost redundancy backup solution by framework symmetric design cleverly, can realize redundancy backup between the NDLP of left and right half frame, NULP, interface disposable plates, the NMPT veneer.Provide failure protection scheme easily, improve system reliability.
The third embodiment of the present invention is considered the asymmetry of up-downlink direction volume of business disposition in the WCDMA wireless access system on the basis of second embodiment, adopt the asymmetric design of up-downgoing business.In each baseband subsystems, the piece number of NULP is more than the piece number of NDLP, and in second embodiment, each half frame has 8 NULP, 2 NDLP.Like this for the professional scale of balance, the disposal ability of every NDLP will be higher than the disposal ability of every NULP, here the core of every processing veneer is all realized by up-downgoing Channel Processing application-specific integrated circuit (ASIC) (Application Specific IntegratedCircuit is called for short " the ASIC ") chip of key.Up asic chip of the present invention is supported 128 tunnel adaptive multi-rate (Adaptive Multi-Rate is called for short " AMR ") voice channel for every, and descending asic chip is supported 256 road AMR voice for every.As seen, the disposal ability of the asic chip that every NDLP comprised is higher than NULP.And every NULP veneer comprises 1 up ASIC, supports 128 road AMR speeches, and every NDLP veneer comprises 3 ASIC, supports 768 road AMR speeches.
Like this, when letter is configured to 1 NULP, 1 NDLP, 1 NMPT, 1 NDTI, 1 NMON, can support 128 tunnel uplink and downlink AMR voice services simultaneously, have the feasibility that progressively expands in the base station; And 1536 tunnel uplink and downlink AMR voice services can be supported simultaneously in the base station when maximum configured is 16 NULP, 4 NDLP, 2 NMPT, 1 NMON, 2 NDTI or 2 NAOI.For half frame, maximum respectively reaches 768 tunnel uplink and downlink AMR voice services.
As seen, the professional asymmetric design of the up-downgoing of second embodiment makes uplink service concentrate on the NULP veneer and handles that downlink business concentrates on the NDLP veneer and handles.Actual disposition is easy to dispose NULP veneer and NULP veneer quantity respectively according to the capacity needs.Realized that the volume of business that the base station is supported maximizes, had under the situation of backup that can realize jumbo 768 tunnel uplink and downlink AMR voice services, maximum reaches 1536 tunnel uplink and downlink AMR voice services.Improve power system capacity greatly, changed the conformability of multiple-rate business.
The fourth embodiment of the present invention has specifically provided workflow and the modularized design scheme of NULP on the basis of first embodiment.NULP finishes up access channel search and dedicated channel demodulation, goes up row decoding.On data surface, finish the processing of base-station node (Node of Base Station, be called for short " NodeB ") uplink baseband data, comprise demodulation to public and dedicated channel, channel estimating, RAKE reception, softer merging, decoding etc.; On chain of command, finish the master control borad signaling procedure, mainly be that NodeB Application Part (NodeB Application Part is called for short " NBAP ") dedicated signaling is handled; Also data such as power control, access information to be sent to NDLP; Finish the 2nd ATM mediate layer (ATMAdaptation Layer is called for short " AAL ") of business datum and (AAL2) handle and be sent to the relay process plate; The same group of NULP that links to each other with NDLP supports the channel resource pool mode.
Its course of work is divided into: receive the upstream digital baseband signal that NDLP sends here, respectively to special uplink channel and up access channel carry out Multipath searching, synchronously, despreading, channel estimating, separate and be in harmonious proportion decoding and handle, and the business datum after the channel decoding delivered to the relay process plate, send to RNC by the relay process plate.In addition, rapid power control data that produce in the NULP plate and catch designation data and deliver to NDLP.NULP links to each other with NMPT, transmits signaling information and receiving system clock signal.Simultaneously, NULP receives control and clock signal from NMPT, and to the NMPT uploaded state, cooperates its controlled function.
The modularized design block diagram of NULP as shown in Figure 3, NULP comprises as lower module: control module, demodulation/access module, decoding module, interface module and necessary clock module and power module.
Wherein, the NULP control module is used to realize cell configuration, uplink channel resources management, and the upload control face is handled and transmission, and the maintenance management of described NULP.Control module is finished cell configuration, uplink channel resources management, and up FP handles and the AAL2 transmission.In addition, control module is also finished the special operational of veneer and is safeguarded and configuration management, comprises board resetting, software loading, condition monitoring.Control module also be responsible for to receive from the alarm of each module and handles.
Demodulation/access module comprises a plurality of dedicated channel demodulating units and 1 Reverse Access Channel demodulating unit, and the realization dedicated channel is separated the demodulation of mediation Reverse Access Channel.Decoding module is finished channel decoding and is handled.
Interface module realizes the conversion and the transmitting-receiving of upstream data, power control data, comprises format conversion and forwarding, power control Data Receiving or the format conversion of upstream data between NDLP and NULP.
Clock module is handled the system clock from NMPT, after system clock is made frequency multiplication, phase place and adjusted, gives other modules in the plate.Power module then is converted to system power supply each chip required voltage in the veneer, offers chip and uses.
The fifth embodiment of the present invention has specifically provided workflow, working method and the modularized design scheme of NDLP on the basis of first embodiment.NDLP at first will finish the forwarding of many sectors uplink baseband data to NULP, and receive and handle from the service surface data (AAL2 cell) of relay process plate with from the chain of command data (AAL5 cell) of master control borad, NULP, carry out coded modulation then, wherein modulating part can carry out or not carry out simple I/Q slicing processing according to software setting, finish signaling procedures such as measurement, realize transmit diversity control, finish descending power control.
Its course of work is divided into: up direction from the digital baseband signal of interface disposable plates reception from radio frequency NTRX, and is transmitted to NULP; Down direction, the relay process plate will be sent to NDLP then from the data of RNC, and NDLP is sent to the interface disposable plates to downlink data then through coding, digital modulation and the spread spectrum of down channel.NDLP receives clock signal and the control signal that NMPT provides simultaneously, and reports its state to NMPT.
The modularized design block diagram of NDLP comprises as lower module: control module, code modulation module, interface module, clock module, power module as shown in Figure 4.
Wherein, the NDLP control module, control module is finished cell configuration management, the processing wireless parameter that NBAP is relevant on the Iub interface and is upgraded control frame, and do operations such as simple statistics for other Frame, just directly be transmitted to code modulation module by interface, main frame connectivity port (Host Port Interface is called for short " HPI ").Control module is also finished the special operational of veneer and is safeguarded and configuration management, comprise to the software loading of veneer with reset.Control module also is responsible for receiving the alarm from each module, and handles.
Code modulation module is used to realize coding and modulation to downlink data, is divided into coded portion and modulating part:
Coded portion is encoded to downlink data, major function has that the cyclic redundancy check (CRC) (CyclicRedundancy Check, be called for short " CRC ") of code block is added, the transmission block cascade with segmentation, chnnel coding, rate-matched, interweave for the first time, radio frame segmentation, transmission channel are multiplexing, the insertion of discontinuous transmission (DTX) for the second time, physical channel segmentation, interweave for the second time, physical channel shines upon.Downlink data behind the coding sends into that modulating part is modulated and spread spectrum.
Modulating part is modulated coded data, and major function comprises that framing, spread spectrum, scrambling, power control, the channel of wireless channel close road, diversity control etc.Modulating part receives from the incompatible power control data from NULP of the coded data of coded portion, sends out baseband modulation signal.
Interface module is used to handle format conversion and forwarding, downlink data format conversion and the Data Receiving or the format conversion such as forwarding, power control of upstream data.
The same NULP of the function of clock module and power module.
In addition, NDLP also has several working ways, is divided into the mode of working alone, active and standby part working method and load sharing mode:
Under the mode that works alone, every NDLP independent process 3 cell channels, 6 cell channels of two coprocessing of one and half frames;
Under the active and standby part of working method, every NDLP handles 6 sector channel, and 2 NDLP in one and half frames have only 1 to carry out the down channel processing, and another piece is as the backup plate;
Under the load sharing mode, every NDLP handles 6 sector channel, and 6 sectors of two NDLP are the same, carry out Channel Processing simultaneously.
The sixth embodiment of the present invention has specifically provided the workflow and the modularized design scheme of interface disposable plates on the basis of first embodiment.The interface disposable plates is mainly finished the interface function between Radio Frequency Subsystem and the baseband subsystems, its workflow is as follows: downstream direction, the interface disposable plates receives the descending digital baseband data frame that NDLP sends here, and according to the corresponding NTRX of sector master's diversity, the folding frame is distributed to each NTRX; Upstream direction, interface disposable plates receive the upstream digital base band data frame that each NTRX sends here.In addition, the interface disposable plates receives clock signal and the control signal that NMPT provides, and reports its state to NMPT.
The functional schematic block diagram of interface disposable plates comprises three unit as shown in Figure 5: multicarrier associating slicing module, control module, interface module and clock, power module.
Control module receives configuration information and the operational maintenance command of master control borad NMPT, and reports single-board operation state, realize and NTRX information alternately.
Multicarrier associating slicing module is supported downlink double/multi-load ripple * 1 sector master's diversity associating slicing function and data forwarding functional verification.
Interface module comprises and the high-speed transfer interface of NTRX and the high-speed transfer interface of NDLP, and realization links to each other with NTRX, NDLP.In addition, support the slicing bypass functionality, on the interface disposable plates, do not carry out the slicing of downgoing baseband signal in this case and data are directly delivered to NTRX handle, under bypass condition or at the simple slicing of NDLP, handle, or on NTRX, realize multichannel associating slicing.
Though by with reference to some preferred embodiment of the present invention, the present invention is illustrated and describes, those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (12)
1. the base band device of a WCDMA mobile communication system base station is characterized in that, comprise,
The relay process plate is used to realize exchanges data between radio network controller and base station;
The downlink processing plate is used to realize the control of down channel coded modulation and power;
Up disposable plates is used to realize up channel search and demodulation, decoding;
The interface disposable plates is used to realize the interface between the baseband subsystems and Radio Frequency Subsystem on the up-downgoing channel;
Master control borad is used for coordinating control and monitors each the veneer collaborative work of described base band device; Wherein,
At up direction, described interface disposable plates sends to described downlink processing plate from described Radio Frequency Subsystem receiving baseband signal, is transmitted to described up disposable plates by it and handles, and after the processing data is sent to the radio network controller interface;
At down direction, described downlink processing plate receives data and handles from described relay process plate, sends to described interface disposable plates after the processing, sends to described Radio Frequency Subsystem by it.
2. the base band device of WCDMA mobile communication system base station according to claim 1, it is characterized in that the capacity of its physics framework is at least one block of described downlink processing plate, at least one described up disposable plates, at least one described interface disposable plates or at least one described master control borad;
According to demand and cost, the piece number of determining described downlink processing plate, up disposable plates, interface disposable plates or master control borad be one to any piece number between the capacity of described physics framework.
3. the base band device of WCDMA mobile communication system base station according to claim 2, it is characterized in that, there are at least two in described downlink processing plate, up disposable plates, interface disposable plates or master control borad, wherein comprise at least one main board and at least one standby plate, described standby plate replaces its work as the redundancy backup of described main board when described main board breaks down.
4. the base band device of WCDMA mobile communication system base station according to claim 3 is characterized in that, described physics framework comprises at least two symmetrical and independent subframes, can distinguish the independent function that realizes described base band device.
5. the base band device of WCDMA mobile communication system base station according to claim 4 is characterized in that, the piece number of described up disposable plates is more than the piece number of described downlink processing plate; The disposal ability of every block of described downlink processing plate is higher than the disposal ability of every described up disposable plates; The disposal ability of the dedicated IC chip that every block of described downlink processing plate is comprised is higher than the disposal ability of the dedicated IC chip that described up disposable plates comprises.
6. the base band device of WCDMA mobile communication system base station according to claim 1, it is characterized in that, described up disposable plates receives the upstream digital baseband signal from described downlink processing plate, respectively special uplink channel and up access channel are searched for and the demodulation coding processing, and the data after will handling are delivered to described relay process plate;
Described up disposable plates produces the power control data, catches designation data, and delivers to described downlink processing plate;
Described up disposable plates receives control and clock signal from described master control borad, and to its uploaded state.
7. the base band device of WCDMA mobile communication system base station according to claim 6 is characterized in that, described up disposable plates comprises:
Up disposable plates control module is used to realize cell configuration, uplink channel resources management, and the upload control face is handled and transmission, and the maintenance management of described up disposable plates;
Demodulation/access module is used to realize that dedicated channel is separated is in harmonious proportion the Reverse Access Channel demodulation;
Decoding module is used to realize the channel decoding processing;
Up disposable plates interface module is used to realize the conversion and the transmitting-receiving of upstream data, power control data.
8. the base band device of WCDMA mobile communication system base station according to claim 1 is characterized in that, described downlink processing plate receives the upstream digital baseband signal from described interface disposable plates, and is transmitted to up disposable plates;
Described downlink processing plate receives data and carries out the down channel processing from described relay process plate interface, is sent to the interface disposable plates then;
Described downlink processing plate receives control and clock signal from described master control borad, and to its uploaded state.
9. the base band device of WCDMA mobile communication system base station according to claim 8 is characterized in that, described downlink processing plate comprises:
Downlink processing plate control module is used to realize cell configuration management, chain of command processing and data statistics, and the maintenance management of described downlink processing plate;
Code modulation module is used to realize coding and modulation to downlink data;
Downlink processing plate interface module is used to realize the conversion and the transmitting-receiving of upstream data, downlink data, power control data.
10. the base band device of WCDMA mobile communication system base station according to claim 1 is characterized in that, described downlink processing plate under the mode of working alone, every described downlink processing plate self-contained processing section cell channel;
Active and standby part of working method, a part of described downlink processing plate is handled all cell channels, and all the other described downlink processing plates are as redundancy backup;
In the load sharing mode, all described downlink processing plates are handled all cell channels jointly.
11. the base band device of WCDMA mobile communication system base station according to claim 1, it is characterized in that, described interface disposable plates receives descending digital baseband signal from described downlink processing plate, by main diversity correspondence, is distributed to each radio-frequency receiving-transmitting plate of described Radio Frequency Subsystem;
Described interface disposable plates receives the upstream digital baseband signal from described radio-frequency receiving-transmitting plate, and is transmitted to described downlink processing plate;
Described interface disposable plates receives control and clock signal from described master control borad, and to its uploaded state.
12. the base band device of WCDMA mobile communication system base station according to claim 11 is characterized in that, described interface disposable plates comprises,
Interface disposable plates control module is used to realize and the information interaction of described radio-frequency receiving-transmitting plate, reaches the maintenance management of described interface disposable plates;
Multicarrier associating slicing module is used to realize downlink double/multi-load ripple master diversity associating slicing function and data forwarding functional verification;
Interface is handled the plate interface module, be used to realize and described radio-frequency receiving-transmitting plate and downlink processing plate between coffret function and slicing bypass functionality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100743780A CN101325753A (en) | 2005-06-30 | 2005-06-30 | Baseband apparatus of WCDMA mobile communication system base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100743780A CN101325753A (en) | 2005-06-30 | 2005-06-30 | Baseband apparatus of WCDMA mobile communication system base station |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100274163A Division CN100474959C (en) | 2005-06-30 | 2005-06-30 | Base band device for wideband code division multiple access mobile communication system base station |
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| Publication Number | Publication Date |
|---|---|
| CN101325753A true CN101325753A (en) | 2008-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100743780A Pending CN101325753A (en) | 2005-06-30 | 2005-06-30 | Baseband apparatus of WCDMA mobile communication system base station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107066358A (en) * | 2016-11-27 | 2017-08-18 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Electronic equipment on satellite backboard |
| CN115134804A (en) * | 2022-05-18 | 2022-09-30 | 华为技术有限公司 | Baseband processing method and device |
-
2005
- 2005-06-30 CN CNA2008100743780A patent/CN101325753A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107066358A (en) * | 2016-11-27 | 2017-08-18 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Electronic equipment on satellite backboard |
| CN115134804A (en) * | 2022-05-18 | 2022-09-30 | 华为技术有限公司 | Baseband processing method and device |
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