CN101801122A - Base-band signal processing device, method and multi-mode base station - Google Patents
Base-band signal processing device, method and multi-mode base station Download PDFInfo
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- CN101801122A CN101801122A CN200910238866A CN200910238866A CN101801122A CN 101801122 A CN101801122 A CN 101801122A CN 200910238866 A CN200910238866 A CN 200910238866A CN 200910238866 A CN200910238866 A CN 200910238866A CN 101801122 A CN101801122 A CN 101801122A
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
- H04B1/406—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with more than one transmission mode, e.g. analog and digital modes
Abstract
The invention provides a base-band signal processing device, comprising a radio frequency (RF) unit interface, a base-band service unit and a main control unit. The RF unit interface comprises a general pin which supports communication of at least more than two RF signal processing units with different modes; the base-band service unit comprises at least two base-band signal processing units with different modes, and the base-band signal processing unit receive, send and process data base-band signals with the corresponding modes via the RF unit interface; and the main control unit is used for loading and operating the RF base-band signal processing unit corresponding to the mode from the at least two base-band signal processing units with different modes according to the mode of the RF signal processing unit of the general pin communication. The base-band signal processing device can change the mode of the base-band signal processing device by replacing the RF signal processing unit, thus the device can support the multi-mode with different frequency bands.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of band signal processor, method and Multi-Mode Base Station.
Background technology
At present, wireless communication system exists multiple standard, as global system for mobile communications (Global systemfor Mobile communication, GSM) standard, code division multiple access (Code Division MultipleAccess, CDMA) standard, micro-wave access to global intercommunication (Worldwide Interoperability forMicrowave Access, WiMAX) standard, Wideband Code Division Multiple Access (WCDMA) (Wideband Code DivisionMultiple Access, WCDMA) standard, Long Term Evolution (Long Term Evolution, LTE) standard etc.
The base station is a part important in the cordless communication network, between user terminal and base station controller, is used for the transmitting/receiving wireless signal, makes the user terminal access of radio network, finish simultaneously and base station controller between information interaction.
In the prior art, the base station generally includes radio frequency unit, is used to receive and dispatch radiofrequency signal, and radiofrequency signal is converted to baseband signal or baseband signal is converted to radiofrequency signal; Base Band Unit is used for the baseband signal of processing service data or signaling, finishes the processing to physical layer symbols level and chip-level digital signal.
For saving cost, the base station of different systems can be total to the location construction, thereby Multi-Mode Base Station becomes a kind of trend gradually.Multi-Mode Base Station refers to that a base station can support the communication service of different systems.
In the prior art; on the Multi-Mode Base Station design on a plurality of hardware baseband processing unit independent of each other realize the baseband signal of the communication service of different systems is handled; these a plurality of baseband processing units are shared a radiofrequency signal processing unit, finish the digital baseband signal of different systems and the conversion between the radiofrequency signal.Yet this Multi-Mode Base Station can only be supported the multimode with frequency range, can not support the multimode of different frequency range.
Summary of the invention
An aspect of of the present present invention provides a kind of band signal processor, can support the processing of baseband signal of the communication service of different systems different frequency range, and this device comprises:
The radio frequency unit interface comprises general pin, and the described general pin support radiofrequency signal processing unit different with two or more at least standards communicated by letter;
The base band business unit comprises the baseband signal processing unit of at least two different systems, and described baseband signal processing unit is by described radio frequency unit interface transmitting-receiving and handle the Data Base band signal of corresponding standard; With
Main control unit is used for the standard according to the radiofrequency signal processing unit of communicating by letter with described general pin, from the baseband signal processing unit of described at least two different systems, loads and move the baseband signal processing unit of corresponding described standard.
Another aspect of the present invention provides a kind of processing method of baseband signal, comprising:
Obtain the standard of the radiofrequency signal processing unit of communicating by letter with the general pin of radio frequency unit interface, the described general pin support radiofrequency signal processing unit different with two or more at least standards communicated by letter;
According to the described standard of obtaining, from the base band business unit, obtain the baseband signal processing unit of the corresponding described standard of obtaining;
Load and move the described baseband signal processing unit that obtains, to handle the Data Base band signal of the corresponding described standard of obtaining.
Another aspect of the present invention provides a kind of Multi-Mode Base Station, comprises above-mentioned band signal processor; And the radiofrequency signal processing unit, described radiofrequency signal processing unit is used for communicating by letter with the general pin of described band signal processor.
Technique scheme, by predefined general pin, support to insert the radiofrequency signal processing unit of different systems, the baseband signal processing unit that in the base band business unit, comprises corresponding standard, standard according to the radiofrequency signal processing unit loads corresponding baseband signal processing unit, thereby can realize supporting the multimode scheme of different frequency range, different systems.
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.
The structural representation of the band signal processor that Fig. 1 provides for one embodiment of the invention;
The structural representation of the band signal processor that Fig. 2 provides for another embodiment of the present invention;
The schematic flow sheet of the processing method of the baseband signal that Fig. 3 provides for another embodiment of the present invention
The structural representation of the Multi-Mode Base Station that Fig. 4 provides for another embodiment of the present invention;
The structural representation of the radiofrequency signal processing unit that Fig. 5 provides for another embodiment of the present invention;
The structural representation of the radiofrequency signal processing unit that Fig. 6 provides for another embodiment of the present 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 the every other embodiment that is obtained under the creative work prerequisite.
A kind of band signal processor that the embodiment of the invention provides, as shown in Figure 1, described band signal processor comprises: main control unit 201, radio frequency unit interface 202 and base band business unit 203.Wherein, radio frequency unit interface 202 comprises general pin, and described general pin support is communicated by letter with the radiofrequency signal processing unit of different systems.Described base band business unit 203 comprises the baseband signal processing unit of at least two different systems, and described baseband signal processing unit is by described radio frequency unit interface 202 transmitting-receivings and handle the Data Base band signal of corresponding standard.Described main control unit 201 is used for the standard according to the radiofrequency signal processing unit 205 of communicating by letter with described general pin, from the baseband signal processing unit of described at least two different systems, loads and move the baseband signal processing unit of corresponding described standard.
See also Fig. 2, a kind of band signal processor that further embodiment of this invention provides comprises main control unit 201, radio frequency unit interface 202 and base band business unit 203.
Described radio frequency unit interface 202 comprises at least one general pin, and general pin can pre-definedly communicate with the radiofrequency signal processing unit 205 of support with different systems.For example at standards such as GSM, CDMA, LTE and WiMAX, the interface signal that gathers the radio-frequency (RF) receiving and transmission module needs of each standard, according to number of signals and signal kinds, determine signal sum, signal level standard, the pin assignment of various types of signal on socket of general pin, thereby define general pin.The radiofrequency signal processing unit 205 of different systems can be connected with radio frequency unit interface 202, sends baseband signal from radio frequency unit interface 202 receiving baseband signals or to radio frequency unit interface 202.
Described radiofrequency signal processing unit 205, be used to finish the conversion between digital baseband signal and the radiofrequency signal, the passage of antenna between band signal processor is provided, be used for transmission and handle uplink and downlink signals, born the controlled function of a part of wave point, for example, provide channel, RF hopping technology, the diversity receiving technology of different frequency, module is from detection ability etc.The radio-frequency channel that communication system adopted of different systems is distinct, thereby, by changing the radiofrequency signal processing unit 205 that radio frequency unit interface 202 inserts, just can change the radiofrequency signal transceiver channel of radio frequency unit interface 202 to antenna.
Base band business unit 203, the baseband signal processing unit 2031 that comprises at least two different systems, the baseband signal processing unit of every kind of standard is realized the processing of up-downgoing Data Base band signal of the communication service of corresponding standard, as the processing to physical layer symbols level and chip-level digital signal.For example, can be the baseband signal processing unit of GSM standard, the baseband signal processing unit of UMTS standard, the baseband signal processing unit of LTE standard or the baseband signal processing unit of CDMA standard.
The baseband signal processing unit of various standards by radio frequency unit interface 202 received communication business the upstream data baseband signal and carry out respective handling, after perhaps the downlink data base band signal process of communication service being finished, send to radio frequency unit interface 202.
Described main control unit 201 is used for the standard according to the radiofrequency signal processing unit of radio frequency unit interface 202 accesses, from a plurality of baseband signal processing units of base band business unit 203, loads the also baseband signal processing unit of corresponding described standard.For example, can when powering on or reset, load and move the baseband signal processing unit of corresponding standard.
Be understandable that, main control unit 201 is except having loading, operation baseband signal processing unit, also have in the prior art sending controling instruction and function such as clock signal is provided, as send and carry out exchanges data between each unit that various control commands make the device that present embodiment provides, provide clock signal etc. for each unit.
As an example, base band business unit 203 can adopt various chips with Digital Signal Processing function to realize, as various flush bonding processors, FPGA (Field Programmable Gate Array) (Programmable Logical Device, PLD) or field programmable gate array realize (Field Programmable Gate Array, FPGA) etc.Described various baseband signal processing unit can realize that software code can be kept in the memory cell of base band business unit 203 by software.After system powered on or resets, under the control of main control unit 201, the software of operation respective version in base band business unit 203 was to realize the processing to the data baseband signal.For example, can load and carry out these software by main control unit 201, to realize processing to the data baseband signal; Perhaps, base band business unit 203 is chip or the processors with logical process function, as DSP or FPGA, moves corresponding software by base band business unit 203 after loading, to realize the processing to the data baseband signal; Perhaps, main control unit 201 and base band business unit 203 can be worked in coordination with and be carried out this section software code.
As an example, realize that the some or all of code of the software of baseband signal processing unit can be carried out by main control unit 201, the result that main control unit 201 is carried out code feeds back to base band business unit 203.
Adopt software to realize the function of baseband portion, can maximized common hardware resource, avoid the redundant and waste of hardware resource, make the hardware volume of baseband portion significantly diminish.For little base station of finite volume system, adopt this scheme, the volume of little base station can be further reduced, and power consumption can be reduced.
As an example, the device that present embodiment provides, also optionally comprise a transmission unit 204, described transmission unit 204 is connected with other network element by physical transmission medium, baseband signal processing unit 2031, then device that provides according to present embodiment and the interface protocol (as Iub interface) between other network element are handled signal, send to other network element by transmission unit 204; Perhaps, receive the Data Base band signal that other network element transmits, the data baseband signal is handled according to the interface protocol between the two from transmission unit.
The band signal processor that present embodiment provides has the general pin that support inserts the radiofrequency signal processing unit of various standards, can insert the radiofrequency signal processing unit of different systems, different frequency range; And the base band business unit comprises the baseband signal processing unit of corresponding different systems, loads the baseband signal processing unit of correspondence according to the standard of the radiofrequency signal processing unit that inserts.By changing the radiofrequency signal processing unit that the radio frequency unit interface inserts, can change the communication standard of the device that present embodiment provides, thereby realized supporting the multimode of different frequency range, solved the multimode problem that different baseband signal processing unit in the prior art can only be shared same radiofrequency signal transceiver channel, can't realize different frequency range.
As an example, base band business unit 203 can comprise bottom software.As shown in Figure 2, the code of the bottom software that bottom software 2035 is preserved, the device that is used for present embodiment is provided carries out basic configuration, make hardware normally to start and normal operation, bottom software 2035 comprise kernel, driver and the plate of embedded system carry support package (Board Support Package, BSP) etc.; And each baseband signal processing unit is also realized by software, for example comprises the algorithm, signaling process of the corresponding standard of this baseband signal processing unit etc., to realize the Business Processing to the communication service of this standard; Simultaneously, baseband signal processing unit 2031 can also comprise the configuration information of the radiofrequency signal processing unit of corresponding standard, is provided with etc. as mode of operation, the operating frequency of radiofrequency signal processing unit 205.
Come out bottom software is abstract, can support the function of radiofrequency signal processing unit hot plug.After the device that present embodiment provides powers on or resets, if detecting the radiofrequency signal processing unit of radio frequency unit interface 202 insertions changes, then main control unit 201 is according to the standard of radiofrequency signal processing unit, reload algorithm software that should standard, realize the function of base band signal process by operating software.
As an example, main control unit 201, can obtain the standard of radiofrequency signal processing unit 205 by base band business unit 203, also the standard signal pin in the general pin can be linked into the general pin (Fig. 2 is not shown) of main control unit 201, so that main control unit 201 detects the standard of radiofrequency signal processing unit.
As an example, radio frequency unit interface 202 can be for a slot, according to the communicating requirement of different systems, and pre-defined general pin; And with GSM, UMTS, LTE, WIMAX, the radiofrequency signal processing unit of card insert type is made in the radio-frequency channel of the base station portion of each standard such as CDMA, can insert the radio frequency unit slot.
As an example, in the described general pin, can comprise signal pins on the throne, be used to indicate the radiofrequency signal processing unit whether on the throne, for example can when the radiofrequency signal processing unit is on the throne, export signal on the throne.For example, signal pins on the throne, it is effective to be set to low level, when detecting signal pins output low level on the throne, judges that the radiofrequency signal processing unit is on the throne.
As an example, described general pin can also comprise the standard signal pin, be used to indicate the standard of radiofrequency signal processing unit, for example, can be by the height of a plurality of standard signal pin level be set, high level is 1, low level is 0, different standards is represented in different combinations, perhaps searches standard to being worth according to the value of standard signal pin; Again for example, described standard signal pin can adopt the I2C bus to obtain the standard of radiofrequency signal processing unit, draws expression 1 on the resistance, level is 3.3V, resistance is drop-down to be 0, adopts EPROM to deposit standard information, I2C address of devices that bus is hung (A2A1A0): EPROM=010.
As an example, described general pin can also comprise the data signal pin that is used for transmission base band, and for example, data signal pin can comprise 12 received signal pins, and from radiofrequency signal processing unit received signal, baseband level is 1.8V; Comprise that 12 send signal pins, be used for sending baseband signal that level also is 1.8V to the radiofrequency signal processing unit; And in the configuration signal pin, can comprise received signal pin clock and the indication pin that sends signal pins, clock synchronization pin etc., level can be 3.3V.
As an example, described general pin can also comprise the configuration signal pin of the running parameter that is used to dispose the radiofrequency signal processing unit.For example, in the configuration signal pin, can comprise the control pin of frequency synthesizer, the locking signal pin of frequency synthesizer, be used for controlling the frequency synthesizer running parameter of radiofrequency signal processing unit, adopt the spi bus transmission, level can be 3.3V.And for example, in the configuration signal pin, can also comprise enable pin, amplifier Frequency Band Selection pin, amplifier clock input pin of amplifier etc., level is 3.3V, is used for controlling the running parameter of the amplifier of radiofrequency signal processing unit.
As an example, described general pin can also comprise power pins, is used for for example can adopting the power pins of supporting 12V to radiofrequency signal processing unit input power source loads.
As an example, the general pin shown in the above example can be inserted main control unit 201, other pin inserts in the base band business unit 203 except that power supply and ground connection.The device that can make present embodiment provide has better transplantability like this, only needs change base band business unit 203 can change the definition of each pin.
The band signal processor that present embodiment provides, has the general pin that support is communicated by letter with the radiofrequency signal processing unit of various standards, the radiofrequency signal processing unit of different systems, different frequency range can be inserted, thereby the base band signal process of the communication service of different systems can be supported.
The device that present embodiment provides can be realized on little base station, thereby the current standard that can support the base station is easily carried out conversion.For example, when needs are changed the standard of base station, stop the communication service of base station by maintenance channel, close the radiofrequency signal processing unit, change the radiofrequency signal processing unit of another standard then, the base station warm reset can change the standard of base station.This mode can effectively reduce the cost that the base station standard is changed, and can not lose the log information of base station.
As shown in Figure 3, present embodiment provides a kind of processing method of baseband signal, mainly comprises:
S301 obtains the standard of the radiofrequency signal processing unit of communicating by letter with the general pin of radio frequency unit interface.
Described general pin support is communicated by letter with the radiofrequency signal processing unit of two or more at least different systems.About the description of the specific implementation details of general pin, repeat no more referring to the aforementioned means item herein.
Behind the signal on the throne of the signal pins output on the throne in detecting described general pin, obtain the standard of the radiofrequency signal processing unit of communicating by letter according to the standard signal pin of general pin with general pin.
S303 obtains corresponding baseband signal processing unit according to the standard of obtaining.
According to the described standard of obtaining, from the base band business unit, obtain the baseband signal processing unit of the corresponding described standard of obtaining.
The baseband signal processing unit that can comprise at least two different systems in the base band business unit for example can comprise the baseband signal processing unit of GSM standard, the baseband signal processing unit of UTMS standard, the baseband signal processing unit of LTE standard etc.For example, be GSM if detect the standard of the radiofrequency signal processing unit that inserts the radio frequency interface unit, then select the baseband signal processing unit of GSM standard; If the radiofrequency signal processing unit standard of obtaining is UMTS, then select the baseband signal processing unit of UMTS standard.
S305, the baseband signal processing unit that loading and operation are obtained is to handle the Data Base band signal of corresponding standard.
Load and baseband signal processing unit that operating procedure S303 obtains, the baseband signal of the communication service of corresponding standard is handled.
For example, after baseband signal processing unit is loaded, will pass through configuration signal pin configuration radiofrequency signal processing unit, then the downgoing baseband data that finish to radiofrequency signal processing unit transmission Base-Band Processing; Perhaps, the uplink baseband data that send of received RF signal processing unit and carry out Base-Band Processing.
Optionally, as an example, the method that present embodiment provides, can also comprise the steps: that baseband signal processing unit is handled the uplink baseband signal after, give transmission unit with the data forwarding that obtains, transmission unit sends to the IP transmission network by the IP agreement with data.
Optionally, as another example of present embodiment, the method that present embodiment provides can also comprise the steps: that transmission unit passes through the IP agreement and receives data from the IP transmission network, by the IP protocol analysis, the data forwarding that parsing obtains is handled to baseband signal processing unit.
The method that present embodiment provides can be carried out by the band signal processor that the foregoing description provides.For example, the main control unit in the step S301-S303 band signal processor that can be provided by the foregoing description is carried out; Step S305 can be carried out by the base band business unit.
Optionally, before step S301, the method that present embodiment provides can also comprise the steps:
Load bottom software, to system initialization, the hardware environment and the software environment of configuration-system operation; Whether detect the radiofrequency signal processing unit on the throne; Detect after the signal on the throne of radiofrequency signal processing unit, the radio frequency signal processing unit is powered on, after powering on, execution in step 301.
The processing method of the baseband signal that present embodiment provides, the general pin support of radio frequency unit interface inserts the radiofrequency signal processing unit of different systems, different frequency range; And can load corresponding baseband signal processing unit according to the standard of the radiofrequency signal processing unit that inserts.Thereby, change the radiofrequency signal processing unit that the radio frequency unit interface inserts, can change the communication standard of support, thereby realize supporting the multimode of different frequency range.
See also Fig. 4, present embodiment also provides a kind of base station 402, comprises band signal processor 4022, and the radiofrequency signal processing unit.Described band signal processor 4022 can be the band signal processor that the foregoing description provides, and does not repeat them here.
Described radiofrequency signal processing unit 4021 communicates with the general pin of band signal processor 4022, and radiofrequency signal processing unit 4021 is converted to baseband signal with the radiofrequency signal that receives, and sends to band signal processor 4022 by general pin; Perhaps, will be converted to radiofrequency signal, launch by antenna from the baseband signal of general pin reception.
As an example, radiofrequency signal processing unit 4021 can comprise level shifting circuit, the level conversion that this level shifting circuit is used for the signal that will receive from general pin is the level that radiofrequency signal processing unit 4021 can be handled, perhaps, with the level conversion of signal is the level that general pin can receive, and sends to general pin.
Because general pin adopts predefined level transparent transmission signal, therefore radiofrequency signal processing unit 4021 needs level shifting circuit to carry out conversion of signals, make radiofrequency signal processing unit 4021 can handle the signal that receives from general pin, perhaps can send signal by general pin.
As an example, Fig. 5 shows the structural representation of radiofrequency signal processing unit, and described radiofrequency signal processing unit comprises: transmission channel 501, receive path 502, level shifting circuit 503 and duplexer.
Wherein, level shifting circuit 503 is used for the level of the signal that receives from the general pin of radio frequency unit interface, is converted to the level that transmission channel 501 can be handled, and is transmitted to transmission channel 501.And transmission channel 501 is used for from base band business unit 503 receiving the Data Base band signals, carries out operations such as digital-to-analogue conversion, up-conversion, filtering, power amplifier, obtains after the radiofrequency signal by duplexer and antenna transmission; And receive path 502 then is used for from antenna 504 received RF signals, through duplexer, LNA, filtering, down-conversion, analog-to-digital conversion, obtains baseband signal, after level shifting circuit 603 switching levels, sends to the general pin of radio frequency unit interface.
Wherein, level shifting circuit 503 can adopt level transferring chip to realize.And the radio-frequency receiving-transmitting passage can adopt radio-frequency unit to realize.
See also Fig. 6, provided a kind of rough schematic view of radio-frequency channel.The transmission channel 501 of radio frequency can comprise digital to analog converter (D/A), modulator, frequency synthesizer, numerical-control attenuator and power amplifier; And the receive path 502 of radio frequency then is made up of filter, low noise amplifier, numerical-control attenuator, modulator, frequency synthesizer and analog-to-digital conversion (A/D) device.
Further, the base station 402 that present embodiment provides, its band signal processor 4022 can also comprise transmission unit, this transmission unit is a kind of network interface, as the FE interface, is connected with IP transmission network 403 by local area network (LAN), receive the IP packet by the IP agreement, and the data forwarding that parsing is obtained gives radio frequency signal processing equipment 4022, perhaps receives the data of base band business unit and is encapsulated as the IP packet, sends to IP transmission network 403 by the IP agreement.
Further, as shown in Figure 4, the base station 402 that present embodiment provides, can link to each other with radio-frequency antenna 401, radiofrequency signal processing unit 4021 is by radio-frequency antenna 401 transmitting-receiving radiofrequency signals, process user equipment (User Equipment, the radiofrequency signal of uplink and downlink communication business UE).
The base station that present embodiment provides, has the band signal processor of supporting to insert various standards, can insert the radiofrequency signal processing unit of different systems, different frequency range, by changing the radiofrequency signal processing unit that the radio frequency unit interface inserts, can change the communication standard of the base station that present embodiment provides, thereby realize supporting the multimode of different frequency range.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct related hardware to finish by program, described program can be stored in the computer read/write memory medium, this program is when carrying out, comprise above-mentioned all or part of step, described storage medium, as: ROM/RAM, disk, CD etc.
Above-described embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is the specific embodiment of the present invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a band signal processor is characterized in that, described device comprises:
The radio frequency unit interface comprises general pin, and the described general pin support radiofrequency signal processing unit different with two or more at least standards communicated by letter;
The base band business unit comprises the baseband signal processing unit of at least two different systems, and described baseband signal processing unit is by described radio frequency unit interface transmitting-receiving and handle the Data Base band signal of corresponding standard; With
Main control unit is used for the standard according to the radiofrequency signal processing unit of communicating by letter with described general pin, from the baseband signal processing unit of described at least two different systems, loads and move the baseband signal processing unit of corresponding described standard.
2. band signal processor as claimed in claim 1 is characterized in that, described general pin comprises:
Whether signal pins on the throne is used to indicate the radiofrequency signal processing unit on the throne;
The standard signal pin is used to indicate the standard of the radiofrequency signal processing unit of communicating by letter with described general pin.
3. band signal processor as claimed in claim 2 is characterized in that, described general pin also comprises:
The configuration signal pin is used to be provided with the parameter of the radiofrequency signal processing unit of communicating by letter with described general pin;
Data signal pin is used for transmission Data Base band signal between described radiofrequency signal processing unit and described base band business unit.
4. as each described band signal processor of claim 1-3, it is characterized in that, described band signal processor also comprises memory cell, and described memory cell is used to store bottom software, and described bottom software is used to make normal the startup and operation in each unit of described device;
Described main control unit, specifically be used to power on or reset after load and move the bottom software that described memory cell is preserved, if it is on the throne to detect the radiofrequency signal processing unit, obtain the standard of described radiofrequency signal processing unit, load and move the software of the realization base band signal process function of corresponding described standard.
5. the processing method of a baseband signal is characterized in that, described method comprises:
Obtain the standard of the radiofrequency signal processing unit of communicating by letter with the general pin of radio frequency unit interface, the described general pin support radiofrequency signal processing unit different with two or more at least standards communicated by letter;
According to the described standard of obtaining, from the base band business unit, obtain the baseband signal processing unit of the corresponding described standard of obtaining;
Load and move the described baseband signal processing unit that obtains, to handle the Data Base band signal of the corresponding described standard of obtaining.
6. the processing method of baseband signal as claimed in claim 5 is characterized in that, described general pin comprises signal pins on the throne and standard signal pin;
The described standard of obtaining the radiofrequency signal processing unit of communicating by letter with the general pin of radio frequency unit interface comprises,
If it is on the throne that fruit detects the radiofrequency signal processing unit by described signal pins on the throne, obtain the standard of the radiofrequency signal processing unit of communicating by letter according to described standard signal pin with described general pin.
7. the processing method of baseband signal as claimed in claim 6 is characterized in that, described general pin also comprises,
The configuration signal pin is used to be provided with the parameter of the radiofrequency signal processing unit of communicating by letter with described general pin;
Data signal pin is used for transmission Data Base band signal between described radiofrequency signal processing unit and described base band business unit.
8. as the processing method of each described baseband signal of claim 5-7, it is characterized in that described loading also moves the described baseband signal processing unit that obtains, comprise,
If it is on the throne to detect the radiofrequency signal processing unit, load and move the software of the realization base band signal process function of the corresponding described standard of obtaining.
9. a Multi-Mode Base Station is characterized in that, described base station comprises each described band signal processor as claim 1-4; And the radiofrequency signal processing unit, described radiofrequency signal processing unit is used for communicating by letter with the general pin of described band signal processor.
10. base station as claimed in claim 9 is characterized in that, described radiofrequency signal processing unit comprises:
Level shifting circuit, the level conversion that described level shifting circuit is used for the signal that will receive from described general pin is the level that described radiofrequency signal processing unit can be handled, perhaps, be the described general pin level that can receive with the level conversion of signal and send to described general pin.
11. base station as claimed in claim 10 is characterized in that, described radiofrequency signal processing unit also comprises:
Transmission channel is used for the Data Base band signal after the conversion of described level shifting circuit incoming level, described Data Base band signal is converted to radiofrequency signal and launches by radio-frequency antenna;
Receive path is used for the radiofrequency signal that described radio-frequency antenna receives is converted to the Data Base band signal, after described level shifting circuit switching levels, sends to described general pin.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910238866A CN101801122A (en) | 2009-12-30 | 2009-12-30 | Base-band signal processing device, method and multi-mode base station |
| PCT/CN2010/080343 WO2011079765A1 (en) | 2009-12-30 | 2010-12-28 | Baseband signal processing device, method and multi-mode base station |
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| CN200910238866A CN101801122A (en) | 2009-12-30 | 2009-12-30 | Base-band signal processing device, method and multi-mode base station |
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