CN109076636A - Signal processing method and distributed control means in distributed base station - Google Patents
Signal processing method and distributed control means in distributed base station Download PDFInfo
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Abstract
This application provides the signal processing methods and distributed control means in distributed base station.The signal processing method of the application includes: the first downlink signal for receiving the feed-in of RF information source；Obtain the first downlink subband signal in the first downlink signal；Down-converted is carried out to the first downlink subband signal, obtains the first downlink frequency variation signal；According to the corresponding network formats of the first down-conversion signal, the first descending carrier signal in the first downlink frequency variation signal with the corresponding bandwidth of network formats is obtained；The corresponding first common public radio interface CPRI mapping channel of multiplexed network standard carries out CPRI mapping to the first descending carrier signal, the first CPRI map frame is obtained, the first CPRI mapping channel is used to carry out CPRI mapping from the carrier signal of the received network formats of BBU to distributed control means；The first descending carrier signal is sent by the first CPRI map frame.The distributed devices and its signal processing method of the embodiment of the present application while enabling the distributed control means to support the RF FD feed of multi-standard, save resource.
Description
This application involves the signal processing methods and distributed control means in wireless communication field more particularly to distributed base station.
Indoor distributed system includes signal source and signal distributing system.Wherein, signal source provides wireless signal for signal distributing system.Signal source can be base station, direct amplifier system base station or other equipment in wireless communication system.The signal that signal source provides may include any one in following signals: personal handyphone system (Personal Handy-phone System, PHS) the signal that signal source provides, 3G signal, Wireless LAN (Wireless Local Area Networks, WLAN) signal, global mobile communication (Global System for Mobile Communication, GSM) signal or CDMA access (Code Division Multiple Access, CDMA) signal.
A kind of signal source is BBU+RRU distributed base station, wherein BBU is the abbreviation of indoor baseband processing unit (Building Base band Unit), and RRU is Remote Radio Unit (Remote Radio Unit).BBU+RRU distributed base station is for traditional centralized base station, the baseband portion and radio frequency part of its traditional base station are physically independently opened, centre passes through the baseband radio interface of standard, such as common public radio interface (Common Public Radio Interface, CPRI), it is attached.
Distributed control unit (Distributed Control Unit, DCU) and other units can also be added between BBU and RRU, to realize the communication between BBU and RRU.Wherein, DCU can support third-party radio frequency (Radio Frequency, RF) FD feed.But currently, DCU can only support the RF FD feed of GSM standard, so that the distributed base station of BBU+DCU+RRU mode can only support single system RF feed-in.
Summary of the invention
This application provides the signal processing methods in distributed base station, distributed control means, the distributed control means are multiplexed in distributed control means and handle signal relevant to RF for handling the CPRI mapping channel of the relevant carrier wave hobby of BBU, while supporting the RF feed-in of multi-standard, the resource utilization of distributed control means is improved.
In a first aspect, this application provides the signal processing method in a kind of distributed base station, the signal
Processing method includes: the first downlink signal for receiving the feed-in of radio frequency information source；Obtain the first downlink subband signal in first downlink signal；Down-converted is carried out to the first downlink subband signal, obtains the first downlink frequency variation signal；According to the corresponding network formats of first down-conversion signal, the first descending carrier signal in the first downlink frequency variation signal with the corresponding bandwidth of the network formats is obtained；It is multiplexed the network formats corresponding first common public radio interface CPRI mapping channel and CPRI mapping is carried out to the first descending carrier signal, the first CPRI map frame is obtained, the first CPRI mapping channel is used to carry out CPRI mapping from the carrier signal of the received network formats of indoor baseband processing unit BBU to the distributed control means；The first descending carrier signal is sent by the first CPRI map frame.
In the signal processing method of the embodiment of the present application, after distributed control means receive the downlink signal of RF information source feed-in and carry out down coversion, the signal that down coversion is obtained is split, obtain the carrier signal of corresponding network formats, then the carrier wave for sending to BBU can be multiplexed and carry out the CPRI of CPRI frame mapping to the carrier signal progress CPRI frame mapping in the signal according to RF information source feed-in, it can allow the distributed control means that the existing resource in distributed control means is made full use of to handle the signal of the different systems of RF information source feed-in, so that distributed control means are while supporting the RF feed-in of multi-standard, improve the resource utilization of distributed control means.
In one possible implementation, the signal processing method further include: receive the first uplink signal sent by the 2nd CPRI frame, first uplink signal includes the first up-link carrier signal of the network formats；It is multiplexed the corresponding 2nd CPRI mapping channel of the network formats, obtains the first up-link carrier signal in the 2nd CPRI frame, the 2nd CPRI mapping channel is used to obtain the carrier signal for the network formats for being sent to the BBU in CPRI frame；Synthesis includes the first uplink subband signal of the first up-link carrier signal；Up-conversion is carried out to the first uplink subband signal, obtains the first uplink frequency variation signal；The first uplink signal comprising the first uplink frequency variation signal is sent to the RF information source.
In one possible implementation, the signal processing method further include: receive the second descending carrier signal of the network formats that the BBU is sent；Using the first CPRI mapping channel, CPRI mapping is carried out to the second descending carrier signal, obtains the 3rd CPRI frame；The second descending carrier signal is sent by the 3rd CPRI frame.
The signal processing method in one possible implementation further include: receive the second up-link carrier signal sent by the 4th CPRI frame；Using the 2nd CPRI mapping channel, the second up-link carrier signal in the 4th CPRI frame is obtained；Second uplink is sent to the BBU to carry
Wave signal.
Second aspect, this application provides the distributed control means in a kind of distributed base station, the distributed control means include each unit for executing the signal processing method in first aspect or any one possible implementation.
The third aspect, this application provides the distributed control means in a kind of distributed base station, which includes memory, processor and communication interface.Memory is for storing program, and processor is for executing the program stored in memory, and communication interface is for communicating.When processor executes the program in memory, processor is specifically used for the signal processing method for calling communication interface to realize in first aspect or any one possible implementation.
Fourth aspect, this application provides a kind of distributed base station, which includes the distributed control means in second aspect or the third aspect.
Fig. 1 is the schematic diagram using the application scenarios of the signal processing method of the embodiment of the present application.
Fig. 2 is the schematic flow chart of the signal processing method of the embodiment of the present application.
Fig. 3 is the schematic frame diagram of the distributed control means of the embodiment of the present application.
In order to make it easy to understand, first description on the whole can implement the exemplary architecture figure of the distributed base station of the signal processing method of the embodiment of the present application.It should be understood that, the embodiment of the present application is not limited in system architecture shown in FIG. 1, it can also include other equipment or unit in the adaptable system of signal processing method and distributed control means of the embodiment of the present application, furthermore, device in Fig. 1 can be hardware, be also possible to the software functionally divided or more than both combination.
BBU 110 is baseband processing unit, the entire base station system of concentrated controling management and realization base band signal process.DCU 120 supports the feed-in of RF information source, also can receive the signal of the transmission of BBU 110.Base station transceiver (Base Transceiver Station, BTS) 130 can be to DCU 120RF FD feed.
PRRU 150 is indoor small-power Remote Radio Unit, the radiofrequency signal being responsible between transmission and processing BBU 110 or BTS 130 and antenna-feeder system.
Currently, DCU 120 can only support the single system of BTS 130RF feed-in, such as the signal of GSM standard.In this regard, being enabled to present applicant proposes a kind of signal processing method and distributed control means
The distributed control means can support the RF feed-in information source of more multi-standard.
Fig. 2 is the schematic flow chart of the signal processing method of the embodiment of the present application.It should be understood that the step of Fig. 2 shows signal processing methods or operation, but these steps or operation are only examples, the deformation of other operations or each operation in Fig. 2 can also be performed in the embodiment of the present application.In addition, each step in Fig. 2 can be executed according to the different sequences presented from Fig. 2, and it is possible to not really want to execute all operationss in Fig. 2.
Signal processing method shown in Fig. 2 can be executed by the distributed control means in distributed base station, which can be 120 DCU shown in Fig. 1.
S210 receives the first downlink signal of RF information source feed-in.
Wherein, the RF information source can be BTS 130 shown in FIG. 1, it may include long term evolution (Long Term Evolution in first downlink signal, LTE) grid standard and/or the carrier signal of Universal Mobile Communication System (Universal Mobile Telecommunications System, UMTS) network formats or other network formats.
S220 obtains the first downlink subband signal in the first downlink signal.
It wherein, may include one or more frequency-variable modules in distributed control means.Each frequency-variable module can only carry out up-conversion or down coversion to the signal in a certain bandwidth.Therefore, if the bandwidth of received first downlink signal of distributed control means has been more than the maximum value for the signal bandwidth that each frequency-variable module is capable of handling, then the converter unit of distributed control means needs first downlink signal being divided into multiple subband signals, that is, obtains all subband signals in first downlink signal.The bandwidth of each subband signal is less than or equal to the upper limit value for the signal bandwidth that each frequency-variable module is capable of handling.
For example, distributed control means can at most carry out frequency conversion, including up-conversion and down coversion to 30 subband signals, the bandwidth upper limit value of each subband signal is 20M.When the bandwidth of the first downlink signal is 30M, the first downlink signal can be divided into two subband signals, the bandwidth of one of subband signal can be 20M, and the bandwidth of another subband signal can be 10M.In this way, converter unit can carry out frequency-conversion processing to the two subband signals respectively.
If the bandwidth of the first downlink signal is less than above-mentioned upper limit value, distributed control means will be divided into a subband signal to downlink signal.
S230 carries out down-converted to the first downlink subband signal, obtains the first downlink frequency variation signal.
After first downlink signal is divided into one or more downlink subband signals by distributed control means, down-converted is carried out to each downlink subband signal in the one or more downlink subband signal respectively, obtains the corresponding downlink frequency variation signal of each downlink subband signal.
S240 obtains the first descending carrier signal in the first downlink frequency variation signal with the corresponding bandwidth of the network formats according to the corresponding network formats of the first down-conversion signal.
After distributed control means obtain downlink frequency variation signal, according to network formats information preconfigured in distributed control means, downlink frequency variation signal is divided into one or more descending carrier signals.Wherein, the bandwidth of the descending carrier signal obtained is the signal bandwidth of corresponding network formats.
Specifically, the configuration information in distributed control means can recorde the port of distributed control means, the network formats for the signal that distributed control means are capable of handling, the bandwidth of the network formats and the standard signal center frequency point between corresponding relationship.At this point, preconfigured network formats information may include the corresponding relationship between the type of network formats and the carrier bandwidths of network formats in distributed control means.It is, of course, also possible to include the corresponding relationship between the port of downlink signal for receiving RF feed-in in distributed control means, the center frequency point network formats information corresponding with the downlink signal of the downlink signal.
Such as, a sub-information in the configuration information can be with are as follows: 1/2.0G/5M/UMTS, this indicates that No. 1 port received signal of distributed control means may include the signal that midpoint frequency point is 2.0G, bandwidth 5M, standard are UMTS.
In this way, the corresponding configuration information of the down-conversion signal can be determined according to above-mentioned configuration information after distributed control means down coversion obtains down-conversion signal, so as to learn the information such as the corresponding network formats of the down-conversion signal, carrier bandwidths.Then down-conversion signal can be divided into one or more descending carrier signals of the bandwidth equal to the carrier bandwidths of the network formats by distributed control means.
The step can specifically be realized by splitter.
S250, it is multiplexed the network formats corresponding first CPRI mapping channel and CPRI mapping is carried out to the first descending carrier signal, the first CPRI map frame is obtained, the first CPRI mapping channel is used to carry out CPRI mapping from the carrier signal of the received network formats of BBU to distributed control means.
After distributed control means obtain descending carrier signal, CPRI mapping is carried out to these descending carrier signals.Specifically, these descending carrier signals are mapped in CPRI frame according to the format of certain C PRI frame structure using CPRI mapping channel corresponding to the corresponding network formats of the carrier signal.For subsequent descriptions simplicity, which is known as the first CPRI frame structure, which is known as the first CPRI frame.
Wherein, CPRI mapping channel corresponding to the corresponding network formats of the carrier signal can be in distributed control means for distributed control means to be carried out with the unit of CPRI mapping from the carrier signal of the received network formats of BBU, the CPRI mapping channel for distributed control means to be carried out with CPRI mapping from the received carrier signal of BBU is multiplexed i.e. in distributed control means, to from RF information source feed-in
Signal obtain carrier wave carry out the mapping of CRPI frame.
S260 sends the first descending carrier signal by the first CPRI map frame.
After above-mentioned descending carrier signal is mapped as the first CPRI frame by distributed control means, the CPRI frame is sent, that is, sends above-mentioned descending carrier signal.
In the signal processing method of the embodiment of the present application, after distributed control means receive the downlink signal of RF information source feed-in and carry out down coversion, the signal that down coversion is obtained is split, obtain the carrier signal of corresponding network formats, then the carrier wave for sending to BBU can be multiplexed and carry out the CPRI of CPRI frame mapping to the carrier signal progress CPRI frame mapping in the signal according to RF information source feed-in, it can allow the distributed control means that the existing resource in distributed control means is made full use of to handle the signal of the different systems of RF information source feed-in, so that distributed control means are while supporting the RF feed-in of multi-standard, improve the resource utilization of distributed control means.
Before the signal processing method for executing the embodiment of the present application, DCU can configure frequency point, bandwidth and the standard information of each subband by man machine language (Man-Machine Language, MML).The standard of DCU configuration may include GSM standard, LTE standard and Universal Mobile Communication System (Universal Mobile Telecommunications System, UMTS) standard.
After DCU configures frequency point, bandwidth and the standard of each subband, these configuration informations of pRRU can be notified.
The frequency point that pRRU is configured according to DCU, bandwidth and standard information configure IF process channel, can be multiplexed existing IF process channel.
In the embodiment of the present application, optionally, which can also include: the first uplink signal for receiving and being sent by the 2nd CPRI frame, and first uplink signal includes the first up-link carrier signal of the network formats；It is multiplexed the corresponding 2nd CPRI mapping channel of the network formats, obtains the first up-link carrier signal in the 2nd CPRI frame, the 2nd CPRI mapping channel is used to obtain the carrier signal for the network formats for being sent to the BBU in CPRI frame；Synthesis includes the first uplink subband signal of the first up-link carrier signal；Up-conversion is carried out to the first uplink subband signal, obtains the first uplink frequency variation signal；The first uplink signal comprising the first uplink frequency variation signal is sent to the RF information source.
Wherein it is possible to which the first up-link carrier signal is merged into the first uplink subband signal by combiner.
That is, distributed control means can receive the CPRI frame for meeting some CPRI frame structure format (such as the first CPRI frame structure) (in order to which subsequent descriptions are convenient, be referred to as the 2nd CPRI frame), may include in the first uplink signal carried in the 2nd CPRI frame one or more carrier signals (for
Subsequent convenience, by the carrier signal is known as the first up-link carrier signal).Next, distributed control means are obtained from the 2nd CPRI frame analyzes each first up-link carrier signal in other words, and according to network formats information preconfigured in distributed control means, these the first up-link carrier signals are merged into a subband signal (subband signal can be known as to the first uplink subband signal).Then distributed control means can carry out upconversion process to the first uplink subband signal, obtain corresponding first uplink frequency variation signal.Finally, distributed control means can send the first uplink frequency variation signal to RF information source in the first port connecting with RF information source.
The signal processing method of the embodiment of the present application can allow distributed control means that the uplink signal of any standard is transmitted to RF information source.
In the embodiment of the present application, optionally, distributed control means also can receive the downlink signal of BBU transmission, then forward the downlink signal.Specifically, the signal processing method can also include: the second descending carrier signal for receiving the network formats that the BBU is sent；Using the first CPRI mapping channel, CPRI mapping is carried out to the second descending carrier signal, obtains the 3rd CPRI frame；The second descending carrier signal is sent by the 3rd CPRI frame.
That is, after distributed control means receive received second downlink signal of BBU, it can be as the processing mode in existing DCU to the BBU downlink signal sent, the second downlink signal is directly subjected to the mapping of CPRI frame, obtains the CPRI frame (the CPRI frame can be known as the 3rd CPRI frame) for meeting corresponding CPRI frame structure.3rd CPRI frame and the first CPRI frame are the same CPRI frames.
At this point, the identical channel CPRI can be multiplexed after the signal of distributed control means received identical standard, frequency point and bandwidth from RF information source and from BBU carries out carrier level CPRI mapping.
In the embodiment of the present application, optionally, the signal processing method further include: receive the second up-link carrier signal sent by the 4th CPRI frame；Using the 2nd CPRI mapping channel, the second up-link carrier signal in the 4th CPRI frame is obtained；The second up-link carrier signal is sent to the BBU.
That is, distributed control means receive the 4th CPRI frame for meeting corresponding CPRI frame structure format, it may include one or more carrier signals (for subsequent convenience, which is known as the second up-link carrier signal) in the second uplink signal carried in 4th CPRI frame.Next, distributed control means obtain from the 4th CPRI frame and analyze each second up-link carrier signal in other words, and these the second up-link carrier signals can be merged into a subband signal (subband signal can be known as to the second uplink subband signal).Finally, distributed control means can send the second uplink subband signal to BBU in the second port connecting with BBU.
In the embodiment of the present application, optionally, distributed control means can also carry out other processing to the signal from RF signal source receiving.After receiving the downlink signal that RF information source is sent such as distributed control means, the downlink signal can be divided into multiple subband signals, then down-converted is carried out to each subband signal respectively, CPRI mapping directly is carried out to the frequency variation signal that down-converted obtains again, corresponding CPRI frame is obtained, sends signal finally by the corresponding CPRI frame.
Similarly, in the embodiment of the present application, optionally, distributed control means can also carry out upconversion process to received uplink subband signal, and the subband frequency variation signal that upconversion process obtains is sent to RF information source.
In the embodiment of the present application, distributed control means split the signal of RF information source feed-in, obtain carrier signal, then CRPI mapping is carried out to the carrier signal, then carrier signal is sent by the CRPI frame that the CRPI maps, compared with signal of the distributed control means to RF information source feed-in carries out the method that subband signal progress CPRI mapping retransmits, one times of transmission bandwidth can be at least saved, can also at least be promoted by sending power by one times.
Fig. 3 is the schematic frame diagram of the distributed control means of the embodiment of the present application.It should be understood that the device shown in Fig. 3 is only example, the distributed control means of the embodiment of the present application may also include other modules or unit, perhaps includes intimate module with the modules in Fig. 3 or does not really want to include all modules in Fig. 3.
It should be understood that above and other operation and/or function of each unit in the distributed control means of the embodiment of the present application shown in Fig. 3 is respectively in order to realize the corresponding process of the signal processing method in Fig. 2, for sake of simplicity, details are not described herein.
Communication unit 310, for receiving the first downlink signal of radio frequency information source feed-in.
Converter unit 320, for obtaining the first downlink subband signal in first downlink signal.
The converter unit 320 is also used to carry out down-converted to the first downlink subband signal, obtains the first downlink frequency variation signal；
Carrier processing unit 330, for obtaining the first descending carrier signal in the first downlink frequency variation signal with the corresponding bandwidth of the network formats according to the corresponding network formats of first down-conversion signal；
The carrier processing unit 330 is also used to be multiplexed the corresponding first common public radio interface CPRI mapping channel of the network formats and carries out CPRI mapping to the first descending carrier signal, the first CPRI map frame is obtained, the first CPRI mapping channel is used to carry out CPRI mapping from the carrier signal of the received network formats of indoor baseband processing unit BBU to the distributed control means；
The communication unit 310 is also used to send the first descending carrier signal by the first CPRI map frame.
In the embodiment of the present application, after distributed control means receive the downlink signal of RF information source feed-in and carry out down coversion, the signal that down coversion is obtained is split, obtain the carrier signal of corresponding network formats, then the carrier signal for splitting and obtaining is sent by CPRI frame, so that can be handled and be forwarded after the signal of the different systems of distributed control means reception RF information source feed-in.
In the embodiment of the present application, optionally, the communication unit is also used to receive the first uplink signal sent by the 2nd CPRI frame, and first uplink signal includes the first up-link carrier signal of the network formats；The carrier processing unit is also used to be multiplexed the corresponding 2nd CPRI mapping channel of the network formats, the first up-link carrier signal in the 2nd CPRI frame is obtained, the 2nd CPRI mapping channel is used to obtain the carrier signal for the network formats that the BBU is sent in CPRI frame；The carrier processing unit is also used to synthesize the first uplink subband signal comprising the first up-link carrier signal；The converter unit is also used to carry out up-conversion to the first uplink subband signal, obtains the first uplink frequency variation signal；The communication unit is also used to send the first uplink signal comprising the first uplink frequency variation signal to the RF information source.
In the embodiment of the present application, optionally, the communication unit is also used to receive the second descending carrier signal of the network formats that the BBU is sent；The carrier processing module is also used for the first CPRI mapping channel, carries out CPRI mapping to the second descending carrier signal, obtains the 3rd CPRI frame；The communication order member is also used to send the second descending carrier signal by the 3rd CPRI frame.
In the embodiment of the present application, optionally, the communication unit is also used to receive the second up-link carrier signal sent by the 4th CPRI frame；The carrier processing unit is also used for the 2nd CPRI mapping channel, obtains the second up-link carrier signal in the 4th CPRI frame；The communication interface is also used to send the second up-link carrier signal to the BBU.
It should be understood that above and other operation and/or function of each unit in the distributed control means of the embodiment of the present application shown in Fig. 3 is respectively in order to realize the corresponding process of the signal processing method in Fig. 2, for sake of simplicity, details are not described herein.
The distributed control means of another embodiment of the application include communication interface, memory and processor.Wherein memory is used to execute the program in memory for storing program, processor, and communication interface is used for and other equipment or unit communication.
Specifically, the communication interface in the distributed control means of the embodiment of the present application is for executing Fig. 3
In the operation that executes of communication unit, processor is used to execute the operation that converter unit in Fig. 3 and carrier processing unit execute.For brief introduction, details are not described herein again.
The embodiment of the present application also provides a kind of distributed base stations, which includes distributed control means shown in Fig. 3, for sake of simplicity, details are not described herein again.
Those of ordinary skill in the art may be aware that unit described in conjunction with the examples disclosed in the embodiments of the present disclosure and algorithm steps, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Professional technician can use different methods to achieve the described function each specific application, but this realization is it is not considered that exceed scope of the present application.
It is apparent to those skilled in the art that for convenience and simplicity of description, system, the specific work process of device and unit of foregoing description can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods may be implemented in other ways.Such as, the apparatus embodiments described above are merely exemplary, such as, the division of the unit, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed mutual coupling, direct-coupling or communication connection can be through some interfaces, the indirect coupling or communication connection of device or unit, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, and component shown as a unit may or may not be physical unit, it can and it is in one place, or may be distributed over multiple network units.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
In addition, each functional unit in each embodiment of the application can integrate in one processing unit, it is also possible to each unit and physically exists alone, can also be integrated in one unit with two or more units.
If the function is realized in the form of SFU software functional unit and when sold or used as an independent product, can store in a computer readable storage medium.Based on this understanding, substantially the part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products the technical solution of the application in other words, the computer software product is stored in a storage medium, it uses including some instructions so that a computer equipment (can be personal computer, server
Or network equipment etc.) execute each embodiment the method for the application all or part of the steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), the various media that can store program code such as magnetic or disk.
It is described above; the only specific embodiment of the application, but the protection scope of the application is not limited thereto, and anyone skilled in the art is within the technical scope of the present application; it can easily think of the change or the replacement, should all cover within the scope of protection of this application.Therefore, the protection scope of the application should be subject to the protection scope in claims.
Claims (9)
- Signal processing method in a kind of distributed base station, which is characterized in that the signal processing method includes:Receive the first downlink signal of radio frequency information source feed-in；Obtain the first downlink subband signal in first downlink signal；Down-converted is carried out to the first downlink subband signal, obtains the first downlink frequency variation signal；According to the corresponding network formats of first down-conversion signal, the first descending carrier signal in the first downlink frequency variation signal with the corresponding bandwidth of the network formats is obtained；It is multiplexed the network formats corresponding first common public radio interface CPRI mapping channel and CPRI mapping is carried out to the first descending carrier signal, the first CPRI map frame is obtained, the first CPRI mapping channel is used to carry out CPRI mapping from the carrier signal of the received network formats of indoor baseband processing unit BBU to the distributed control means；The first descending carrier signal is sent by the first CPRI map frame.
- Signal processing method according to claim 1, which is characterized in that the signal processing method further include:The first uplink signal sent by the 2nd CPRI frame is received, first uplink signal includes the first up-link carrier signal of the network formats；It is multiplexed the corresponding 2nd CPRI mapping channel of the network formats, obtains the first up-link carrier signal in the 2nd CPRI frame, the 2nd CPRI mapping channel is used to obtain the carrier signal for the network formats for being sent to the BBU in CPRI frame；Synthesis includes the first uplink subband signal of the first up-link carrier signal；Up-conversion is carried out to the first uplink subband signal, obtains the first uplink frequency variation signal；The first uplink signal comprising the first uplink frequency variation signal is sent to the RF information source.
- Signal processing method according to claim 1 or 2, which is characterized in that the signal processing method further include:Receive the second descending carrier signal of the network formats that the BBU is sent；Using the first CPRI mapping channel, CPRI mapping is carried out to the second descending carrier signal, obtains the 3rd CPRI frame；The second descending carrier signal is sent by the 3rd CPRI frame.
- Signal processing method according to claim 3, which is characterized in that the signal processing method further include:Receive the second up-link carrier signal sent by the 4th CPRI frame；Using the 2nd CPRI mapping channel, the second up-link carrier signal in the 4th CPRI frame is obtained；The second up-link carrier signal is sent to the BBU.
- A kind of distributed control means in distributed base station characterized by comprisingCommunication unit, for receiving the first downlink signal of radio frequency information source feed-in；Converter unit, for obtaining the first downlink subband signal in first downlink signal；The converter unit is also used to carry out down-converted to the first downlink subband signal, obtains the first downlink frequency variation signal；Carrier processing unit, for obtaining the first descending carrier signal in the first downlink frequency variation signal with the corresponding bandwidth of the network formats according to the corresponding network formats of first down-conversion signal；The carrier processing unit is also used to be multiplexed the corresponding first common public radio interface CPRI mapping channel of the network formats and carries out CPRI mapping to the first descending carrier signal, the first CPRI map frame is obtained, the first CPRI mapping channel is used to carry out CPRI mapping from the carrier signal of the received network formats of indoor baseband processing unit BBU to the distributed control means；The communication unit is also used to send the first descending carrier signal by the first CPRI map frame.
- Distributed control means according to claim 5, which is characterized in that the communication unit is also used to receive the first uplink signal sent by the 2nd CPRI frame, and first uplink signal includes the first up-link carrier signal of the network formats；The carrier processing unit is also used to be multiplexed the corresponding 2nd CPRI mapping channel of the network formats, the first up-link carrier signal in the 2nd CPRI frame is obtained, the 2nd CPRI mapping channel is used to obtain the carrier signal for the network formats that the BBU is sent in CPRI frame；The carrier processing unit is also used to synthesize the first uplink subband signal comprising the first up-link carrier signal；The converter unit is also used to carry out up-conversion to the first uplink subband signal, obtains the first uplink frequency variation signal；The communication unit is also used to send the first uplink signal comprising the first uplink frequency variation signal to the RF information source.
- Distributed control means according to claim 5 or 6, which is characterized in that the communication unit is also used to receive the second descending carrier signal of the network formats that the BBU is sent；The carrier processing module is also used for the first CPRI mapping channel, carries out CPRI mapping to the second descending carrier signal, obtains the 3rd CPRI frame；The communication order member is also used to send the second descending carrier signal by the 3rd CPRI frame.
- Distributed control means according to claim 7, which is characterized in that the communication unit is also used to receive the second up-link carrier signal sent by the 4th CPRI frame；The carrier processing unit is also used for the 2nd CPRI mapping channel, obtains the second up-link carrier signal in the 4th CPRI frame；The communication interface is also used to send the second up-link carrier signal to the BBU.
- A kind of distributed base station, which is characterized in that including distributed control means described in any one of claim 5 to claim 8.
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| PCT/CN2016/112168 WO2018119596A1 (en) | 2016-12-26 | 2016-12-26 | Signal processing method in distributed base station, and distributed control device |
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